/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_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:45:47,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:45:47,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:45:47,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:45:47,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:45:47,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:45:47,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:45:47,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:45:47,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:45:47,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:45:47,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:45:47,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:45:47,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:45:47,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:45:47,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:45:47,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:45:47,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:45:47,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:45:47,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:45:47,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:45:47,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:45:47,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:45:47,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:45:47,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:45:47,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:45:47,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:45:47,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:45:47,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:45:47,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:45:47,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:45:47,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:45:47,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:45:47,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:45:47,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:45:47,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:45:47,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:45:47,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:45:47,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:45:47,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:45:47,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:45:47,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:45:47,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:45:47,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:45:47,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:45:47,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:45:47,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:45:47,906 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:45:47,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:45:47,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:45:47,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:45:47,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:45:47,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:45:47,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:45:47,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:45:47,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:45:47,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:45:47,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:45:47,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:45:47,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:45:47,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:45:47,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:45:47,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:45:47,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:45:47,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:45:47,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:45:47,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:45:47,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:45:47,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:45:47,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:45:47,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:45:47,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:45:47,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:45:48,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:45:48,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:45:48,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:45:48,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:45:48,386 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:45:48,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-27 21:45:48,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316ac43cd/a2f5d97e7a79479183763f4b40ad4034/FLAG631289863 [2020-08-27 21:45:49,063 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:45:49,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-27 21:45:49,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316ac43cd/a2f5d97e7a79479183763f4b40ad4034/FLAG631289863 [2020-08-27 21:45:49,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316ac43cd/a2f5d97e7a79479183763f4b40ad4034 [2020-08-27 21:45:49,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:45:49,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:45:49,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:45:49,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:45:49,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:45:49,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:49" (1/1) ... [2020-08-27 21:45:49,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:49, skipping insertion in model container [2020-08-27 21:45:49,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:49" (1/1) ... [2020-08-27 21:45:49,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:45:49,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:45:49,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:45:49,972 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:45:50,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:45:50,125 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:45:50,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50 WrapperNode [2020-08-27 21:45:50,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:45:50,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:45:50,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:45:50,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:45:50,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... [2020-08-27 21:45:50,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:45:50,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:45:50,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:45:50,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:45:50,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:45:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:45:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:45:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:45:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:45:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:45:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:45:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:45:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:45:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:45:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:45:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:45:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:45:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:45:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:45:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:45:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:45:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:45:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:45:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:45:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:45:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:45:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:45:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:45:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:45:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:45:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:45:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:45:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:45:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:45:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:45:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:45:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:45:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:45:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:45:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:45:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:45:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:45:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:45:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:45:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:45:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:45:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:45:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:45:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:45:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:45:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:45:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:45:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:45:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:45:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:45:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:45:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:45:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:45:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:45:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:45:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:45:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:45:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:45:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:45:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:45:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:45:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:45:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:45:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:45:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:45:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:45:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:45:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:45:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:45:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:45:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:45:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:45:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:45:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:45:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:45:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:45:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:45:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:45:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:45:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:45:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:45:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:45:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:45:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:45:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:45:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:45:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:45:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:45:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:45:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:45:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:45:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:45:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:45:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:45:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:45:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:45:51,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:45:51,449 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:45:51,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:51 BoogieIcfgContainer [2020-08-27 21:45:51,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:45:51,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:45:51,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:45:51,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:45:51,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:45:49" (1/3) ... [2020-08-27 21:45:51,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ecf8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:51, skipping insertion in model container [2020-08-27 21:45:51,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:50" (2/3) ... [2020-08-27 21:45:51,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ecf8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:51, skipping insertion in model container [2020-08-27 21:45:51,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:51" (3/3) ... [2020-08-27 21:45:51,464 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-08-27 21:45:51,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:45:51,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:45:51,510 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:45:51,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:45:51,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:45:51,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:45:51,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:45:51,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:45:51,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:45:51,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:45:51,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:45:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-27 21:45:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-27 21:45:51,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:51,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:51,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2020-08-27 21:45:51,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:51,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988666244] [2020-08-27 21:45:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,396 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:45:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:45:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:52,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988666244] [2020-08-27 21:45:52,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:52,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:45:52,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390874333] [2020-08-27 21:45:52,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:45:52,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:52,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:45:52,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:45:52,540 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-27 21:45:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:53,735 INFO L93 Difference]: Finished difference Result 357 states and 456 transitions. [2020-08-27 21:45:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:45:53,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-27 21:45:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:53,757 INFO L225 Difference]: With dead ends: 357 [2020-08-27 21:45:53,758 INFO L226 Difference]: Without dead ends: 195 [2020-08-27 21:45:53,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:45:53,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-27 21:45:53,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-27 21:45:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-27 21:45:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-27 21:45:53,884 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2020-08-27 21:45:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:53,885 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-27 21:45:53,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:45:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-27 21:45:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-27 21:45:53,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:53,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:53,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:45:53,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:53,891 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2020-08-27 21:45:53,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:53,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224376926] [2020-08-27 21:45:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,317 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:45:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:45:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:54,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224376926] [2020-08-27 21:45:54,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:54,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:45:54,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332918286] [2020-08-27 21:45:54,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:45:54,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:54,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:45:54,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:45:54,494 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 9 states. [2020-08-27 21:45:54,922 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:55,301 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:55,593 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:55,929 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:57,757 INFO L93 Difference]: Finished difference Result 330 states and 411 transitions. [2020-08-27 21:45:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:45:57,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-27 21:45:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:57,762 INFO L225 Difference]: With dead ends: 330 [2020-08-27 21:45:57,762 INFO L226 Difference]: Without dead ends: 195 [2020-08-27 21:45:57,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:45:57,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-27 21:45:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-27 21:45:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-27 21:45:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2020-08-27 21:45:57,816 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 64 [2020-08-27 21:45:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:57,816 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2020-08-27 21:45:57,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:45:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2020-08-27 21:45:57,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-27 21:45:57,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:57,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:57,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:45:57,821 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:57,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1142393912, now seen corresponding path program 1 times [2020-08-27 21:45:57,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:57,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129498437] [2020-08-27 21:45:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,169 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:45:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:45:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-27 21:45:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:45:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:58,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129498437] [2020-08-27 21:45:58,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:58,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:45:58,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023920047] [2020-08-27 21:45:58,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:45:58,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:58,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:45:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:45:58,316 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand 6 states. [2020-08-27 21:45:58,918 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:00,386 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-08-27 21:46:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:46:00,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-08-27 21:46:00,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:00,390 INFO L225 Difference]: With dead ends: 317 [2020-08-27 21:46:00,390 INFO L226 Difference]: Without dead ends: 200 [2020-08-27 21:46:00,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:46:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-27 21:46:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2020-08-27 21:46:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-27 21:46:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-08-27 21:46:00,425 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 78 [2020-08-27 21:46:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:00,425 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-08-27 21:46:00,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:46:00,425 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-08-27 21:46:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-27 21:46:00,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:00,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:00,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:46:00,429 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2020-08-27 21:46:00,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:00,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037723344] [2020-08-27 21:46:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,815 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:46:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:46:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-27 21:46:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:46:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:01,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037723344] [2020-08-27 21:46:01,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:01,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:46:01,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283800495] [2020-08-27 21:46:01,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:46:01,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:01,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:46:01,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:46:01,020 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-08-27 21:46:01,426 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:03,168 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:03,795 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2020-08-27 21:46:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:46:03,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-27 21:46:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:03,800 INFO L225 Difference]: With dead ends: 424 [2020-08-27 21:46:03,800 INFO L226 Difference]: Without dead ends: 298 [2020-08-27 21:46:03,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-27 21:46:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2020-08-27 21:46:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-27 21:46:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2020-08-27 21:46:03,854 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2020-08-27 21:46:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:03,855 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2020-08-27 21:46:03,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:46:03,855 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2020-08-27 21:46:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-27 21:46:03,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:03,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:03,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:46:03,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2020-08-27 21:46:03,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:03,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906538659] [2020-08-27 21:46:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,263 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:46:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:46:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:46:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-27 21:46:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:46:04,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906538659] [2020-08-27 21:46:04,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:04,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:46:04,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239448332] [2020-08-27 21:46:04,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:46:04,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:46:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:46:04,471 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 9 states. [2020-08-27 21:46:04,970 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:05,688 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:06,789 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:07,138 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:07,634 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:07,947 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:08,744 INFO L93 Difference]: Finished difference Result 524 states and 626 transitions. [2020-08-27 21:46:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:46:08,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-27 21:46:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:08,749 INFO L225 Difference]: With dead ends: 524 [2020-08-27 21:46:08,749 INFO L226 Difference]: Without dead ends: 297 [2020-08-27 21:46:08,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:46:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-27 21:46:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-27 21:46:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-27 21:46:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2020-08-27 21:46:08,808 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2020-08-27 21:46:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:08,809 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2020-08-27 21:46:08,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:46:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2020-08-27 21:46:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-27 21:46:08,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:08,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:08,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:46:08,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:08,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2020-08-27 21:46:08,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:08,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443530818] [2020-08-27 21:46:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,152 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:46:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:46:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:46:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-27 21:46:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:09,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443530818] [2020-08-27 21:46:09,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:09,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:46:09,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727307365] [2020-08-27 21:46:09,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:46:09,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:46:09,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:46:09,431 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 9 states. [2020-08-27 21:46:10,616 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:10,925 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:11,234 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:11,536 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:12,627 INFO L93 Difference]: Finished difference Result 524 states and 631 transitions. [2020-08-27 21:46:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:46:12,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-27 21:46:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:12,634 INFO L225 Difference]: With dead ends: 524 [2020-08-27 21:46:12,634 INFO L226 Difference]: Without dead ends: 298 [2020-08-27 21:46:12,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:46:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-27 21:46:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2020-08-27 21:46:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-27 21:46:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-08-27 21:46:12,706 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2020-08-27 21:46:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:12,707 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-08-27 21:46:12,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:46:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-08-27 21:46:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-27 21:46:12,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:12,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:12,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:46:12,709 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:12,710 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2020-08-27 21:46:12,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:12,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943033050] [2020-08-27 21:46:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,065 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:46:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:46:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:46:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-27 21:46:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:13,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943033050] [2020-08-27 21:46:13,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:13,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:46:13,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220556710] [2020-08-27 21:46:13,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:46:13,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:13,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:46:13,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:46:13,273 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-08-27 21:46:13,959 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:14,255 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:14,594 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:15,433 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:15,747 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:16,058 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:17,295 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2020-08-27 21:46:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:46:17,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-27 21:46:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:17,299 INFO L225 Difference]: With dead ends: 534 [2020-08-27 21:46:17,299 INFO L226 Difference]: Without dead ends: 303 [2020-08-27 21:46:17,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:46:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-27 21:46:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2020-08-27 21:46:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-27 21:46:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2020-08-27 21:46:17,343 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2020-08-27 21:46:17,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:17,344 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2020-08-27 21:46:17,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:46:17,344 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2020-08-27 21:46:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-27 21:46:17,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:17,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:17,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:46:17,346 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:17,347 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2020-08-27 21:46:17,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:17,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240140931] [2020-08-27 21:46:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,698 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:46:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:46:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:46:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-27 21:46:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:17,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240140931] [2020-08-27 21:46:17,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:17,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:46:17,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894658594] [2020-08-27 21:46:17,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:46:17,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:17,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:46:17,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:46:17,895 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 7 states. [2020-08-27 21:46:18,333 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:18,994 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:21,218 INFO L93 Difference]: Finished difference Result 713 states and 879 transitions. [2020-08-27 21:46:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:46:21,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-27 21:46:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:21,223 INFO L225 Difference]: With dead ends: 713 [2020-08-27 21:46:21,223 INFO L226 Difference]: Without dead ends: 478 [2020-08-27 21:46:21,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:46:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-27 21:46:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 440. [2020-08-27 21:46:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-27 21:46:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 512 transitions. [2020-08-27 21:46:21,300 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 512 transitions. Word has length 112 [2020-08-27 21:46:21,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:21,300 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 512 transitions. [2020-08-27 21:46:21,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:46:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 512 transitions. [2020-08-27 21:46:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-27 21:46:21,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:21,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:21,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:46:21,303 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:21,304 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2020-08-27 21:46:21,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:21,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070438628] [2020-08-27 21:46:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,701 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:46:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:46:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-27 21:46:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-27 21:46:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:21,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070438628] [2020-08-27 21:46:21,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:21,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:46:21,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35077429] [2020-08-27 21:46:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:46:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:46:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:46:21,985 INFO L87 Difference]: Start difference. First operand 440 states and 512 transitions. Second operand 12 states. [2020-08-27 21:46:22,549 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:23,322 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:24,600 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:24,975 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:25,297 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:25,653 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:26,024 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:27,772 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:28,050 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:29,070 INFO L93 Difference]: Finished difference Result 1217 states and 1501 transitions. [2020-08-27 21:46:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-27 21:46:29,071 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-27 21:46:29,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:29,078 INFO L225 Difference]: With dead ends: 1217 [2020-08-27 21:46:29,078 INFO L226 Difference]: Without dead ends: 880 [2020-08-27 21:46:29,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-27 21:46:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-27 21:46:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2020-08-27 21:46:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-08-27 21:46:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 883 transitions. [2020-08-27 21:46:29,222 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 883 transitions. Word has length 116 [2020-08-27 21:46:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:29,225 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 883 transitions. [2020-08-27 21:46:29,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:46:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 883 transitions. [2020-08-27 21:46:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-27 21:46:29,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:29,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:29,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:46:29,229 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:29,230 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2020-08-27 21:46:29,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:29,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530304859] [2020-08-27 21:46:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,674 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-27 21:46:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-27 21:46:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:46:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-27 21:46:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:46:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-27 21:46:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:46:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-27 21:46:30,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530304859] [2020-08-27 21:46:30,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:30,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:46:30,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114152100] [2020-08-27 21:46:30,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:46:30,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:30,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:46:30,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:30,138 INFO L87 Difference]: Start difference. First operand 767 states and 883 transitions. Second operand 16 states. [2020-08-27 21:46:30,772 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:31,162 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:46:31,490 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:46:31,816 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:46:32,568 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:32,903 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:33,996 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:34,675 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:35,201 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:35,679 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:36,033 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:36,416 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:37,067 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:37,553 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:38,274 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:38,624 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:39,099 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:39,613 INFO L93 Difference]: Finished difference Result 1642 states and 1948 transitions. [2020-08-27 21:46:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-27 21:46:39,618 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-27 21:46:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:39,624 INFO L225 Difference]: With dead ends: 1642 [2020-08-27 21:46:39,625 INFO L226 Difference]: Without dead ends: 974 [2020-08-27 21:46:39,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-27 21:46:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-08-27 21:46:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 895. [2020-08-27 21:46:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-08-27 21:46:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1041 transitions. [2020-08-27 21:46:39,791 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1041 transitions. Word has length 193 [2020-08-27 21:46:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:39,792 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1041 transitions. [2020-08-27 21:46:39,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:46:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1041 transitions. [2020-08-27 21:46:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-27 21:46:39,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:39,801 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:39,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:46:39,801 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:39,802 INFO L82 PathProgramCache]: Analyzing trace with hash 833806897, now seen corresponding path program 1 times [2020-08-27 21:46:39,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:39,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475925772] [2020-08-27 21:46:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,263 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-27 21:46:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:46:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:46:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 21:46:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-27 21:46:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:46:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:46:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-27 21:46:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-27 21:46:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-27 21:46:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-27 21:46:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-27 21:46:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-27 21:46:41,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475925772] [2020-08-27 21:46:41,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:41,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-27 21:46:41,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858493145] [2020-08-27 21:46:41,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-27 21:46:41,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:41,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-27 21:46:41,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:46:41,046 INFO L87 Difference]: Start difference. First operand 895 states and 1041 transitions. Second operand 14 states. [2020-08-27 21:46:42,034 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:42,897 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:44,203 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:44,590 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:44,935 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:45,273 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:46:45,687 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:46:46,028 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 193