/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:53:16,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:53:16,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:53:16,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:53:16,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:53:16,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:53:16,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:53:16,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:53:16,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:53:16,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:53:16,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:53:16,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:53:16,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:53:16,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:53:16,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:53:16,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:53:16,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:53:16,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:53:16,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:53:16,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:53:16,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:53:16,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:53:16,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:53:16,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:53:16,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:53:16,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:53:16,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:53:16,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:53:16,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:53:16,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:53:16,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:53:16,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:53:16,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:53:16,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:53:16,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:53:16,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:53:16,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:53:16,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:53:16,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:53:16,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:53:16,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:53:16,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:53:16,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:53:16,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:53:16,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:53:16,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:53:16,250 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:53:16,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:53:16,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:53:16,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:53:16,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:53:16,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:53:16,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:53:16,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:53:16,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:53:16,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:53:16,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:53:16,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:53:16,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:53:16,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:53:16,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:53:16,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:53:16,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:53:16,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:53:16,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:53:16,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:53:16,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:53:16,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:53:16,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:53:16,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:53:16,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:53:16,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:53:16,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:53:16,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:53:16,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:53:16,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:53:16,563 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:53:16,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-19 01:53:16,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e5a5e29e/f352010b2ffd4a859856ce66b2f0ed50/FLAG4312af3c9 [2020-08-19 01:53:17,169 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:53:17,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-19 01:53:17,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e5a5e29e/f352010b2ffd4a859856ce66b2f0ed50/FLAG4312af3c9 [2020-08-19 01:53:17,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e5a5e29e/f352010b2ffd4a859856ce66b2f0ed50 [2020-08-19 01:53:17,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:53:17,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:53:17,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:53:17,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:53:17,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:53:17,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:53:17" (1/1) ... [2020-08-19 01:53:17,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4288bc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:17, skipping insertion in model container [2020-08-19 01:53:17,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:53:17" (1/1) ... [2020-08-19 01:53:17,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:53:17,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:53:17,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:53:17,925 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:53:18,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:53:18,111 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:53:18,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18 WrapperNode [2020-08-19 01:53:18,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:53:18,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:53:18,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:53:18,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:53:18,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... [2020-08-19 01:53:18,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:53:18,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:53:18,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:53:18,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:53:18,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:53:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:53:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:53:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:53:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:53:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:53:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:53:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:53:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:53:18,331 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:53:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:53:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:53:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:53:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:53:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:53:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:53:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:53:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:53:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:53:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:53:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:53:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:53:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:53:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:53:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:53:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:53:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:53:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:53:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:53:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:53:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:53:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:53:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 01:53:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:53:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:53:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:53:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:53:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:53:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:53:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:53:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:53:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:53:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:53:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:53:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:53:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:53:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:53:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:53:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:53:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:53:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:53:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:53:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:53:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:53:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:53:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:53:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:53:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:53:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:53:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:53:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:53:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:53:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:53:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:53:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:53:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:53:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:53:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:53:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:53:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:53:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:53:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:53:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:53:19,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:53:19,490 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:53:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:19 BoogieIcfgContainer [2020-08-19 01:53:19,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:53:19,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:53:19,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:53:19,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:53:19,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:53:17" (1/3) ... [2020-08-19 01:53:19,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eb712a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:19, skipping insertion in model container [2020-08-19 01:53:19,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:18" (2/3) ... [2020-08-19 01:53:19,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eb712a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:19, skipping insertion in model container [2020-08-19 01:53:19,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:19" (3/3) ... [2020-08-19 01:53:19,504 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2020-08-19 01:53:19,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:53:19,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:53:19,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:53:19,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:53:19,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:53:19,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:53:19,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:53:19,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:53:19,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:53:19,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:53:19,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:53:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-19 01:53:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:53:19,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:19,594 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] [2020-08-19 01:53:19,595 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash -229262266, now seen corresponding path program 1 times [2020-08-19 01:53:19,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:19,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697003199] [2020-08-19 01:53:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,263 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:20,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:53:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:20,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697003199] [2020-08-19 01:53:20,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:20,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:53:20,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357071950] [2020-08-19 01:53:20,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:53:20,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:20,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:53:20,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:20,474 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 4 states. [2020-08-19 01:53:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:21,713 INFO L93 Difference]: Finished difference Result 345 states and 435 transitions. [2020-08-19 01:53:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:53:21,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:53:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:21,733 INFO L225 Difference]: With dead ends: 345 [2020-08-19 01:53:21,733 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 01:53:21,741 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 [2020-08-19 01:53:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 01:53:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-19 01:53:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-19 01:53:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2020-08-19 01:53:21,860 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 59 [2020-08-19 01:53:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:21,860 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2020-08-19 01:53:21,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:53:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2020-08-19 01:53:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:53:21,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:21,865 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] [2020-08-19 01:53:21,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:53:21,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:21,866 INFO L82 PathProgramCache]: Analyzing trace with hash -751857026, now seen corresponding path program 1 times [2020-08-19 01:53:21,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:21,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610943942] [2020-08-19 01:53:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,313 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:53:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:53:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:53:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:22,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610943942] [2020-08-19 01:53:22,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:22,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:53:22,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749540270] [2020-08-19 01:53:22,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:53:22,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:22,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:53:22,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:53:22,377 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2020-08-19 01:53:22,917 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:24,006 INFO L93 Difference]: Finished difference Result 286 states and 343 transitions. [2020-08-19 01:53:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:53:24,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:53:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:24,011 INFO L225 Difference]: With dead ends: 286 [2020-08-19 01:53:24,011 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 01:53:24,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 01:53:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-19 01:53:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-19 01:53:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2020-08-19 01:53:24,061 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 60 [2020-08-19 01:53:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:24,062 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2020-08-19 01:53:24,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:53:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2020-08-19 01:53:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:53:24,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:24,064 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] [2020-08-19 01:53:24,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:53:24,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash -8533593, now seen corresponding path program 1 times [2020-08-19 01:53:24,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:24,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749318462] [2020-08-19 01:53:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,422 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:24,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:53:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:24,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749318462] [2020-08-19 01:53:24,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:24,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:24,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683943662] [2020-08-19 01:53:24,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:24,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:24,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:24,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:24,508 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand 9 states. [2020-08-19 01:53:24,972 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:25,317 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:25,593 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:25,871 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:27,370 INFO L93 Difference]: Finished difference Result 299 states and 362 transitions. [2020-08-19 01:53:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:53:27,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 01:53:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:27,379 INFO L225 Difference]: With dead ends: 299 [2020-08-19 01:53:27,379 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 01:53:27,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:53:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 01:53:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-19 01:53:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-19 01:53:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2020-08-19 01:53:27,428 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 65 [2020-08-19 01:53:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:27,429 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2020-08-19 01:53:27,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2020-08-19 01:53:27,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:53:27,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:27,431 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] [2020-08-19 01:53:27,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:53:27,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:27,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2138732759, now seen corresponding path program 1 times [2020-08-19 01:53:27,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:27,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003044113] [2020-08-19 01:53:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,742 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 01:53:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:53:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:27,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003044113] [2020-08-19 01:53:27,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:27,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:53:27,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210995481] [2020-08-19 01:53:27,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:53:27,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:53:27,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:27,880 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand 7 states. [2020-08-19 01:53:28,248 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:29,891 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:30,494 INFO L93 Difference]: Finished difference Result 403 states and 496 transitions. [2020-08-19 01:53:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:53:30,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-19 01:53:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:30,498 INFO L225 Difference]: With dead ends: 403 [2020-08-19 01:53:30,498 INFO L226 Difference]: Without dead ends: 283 [2020-08-19 01:53:30,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-19 01:53:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 237. [2020-08-19 01:53:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 01:53:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 270 transitions. [2020-08-19 01:53:30,552 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 270 transitions. Word has length 78 [2020-08-19 01:53:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:30,553 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 270 transitions. [2020-08-19 01:53:30,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:53:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 270 transitions. [2020-08-19 01:53:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:53:30,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:30,555 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] [2020-08-19 01:53:30,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:53:30,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2116914143, now seen corresponding path program 1 times [2020-08-19 01:53:30,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:30,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45465786] [2020-08-19 01:53:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,899 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:53:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:53:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:53:31,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45465786] [2020-08-19 01:53:31,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:31,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:31,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178196702] [2020-08-19 01:53:31,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:31,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:31,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:31,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:31,087 INFO L87 Difference]: Start difference. First operand 237 states and 270 transitions. Second operand 9 states. [2020-08-19 01:53:31,583 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:32,274 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:33,251 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:33,562 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:34,087 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:34,354 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:34,991 INFO L93 Difference]: Finished difference Result 491 states and 592 transitions. [2020-08-19 01:53:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:53:34,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 01:53:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:34,995 INFO L225 Difference]: With dead ends: 491 [2020-08-19 01:53:34,995 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 01:53:34,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:53:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 01:53:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 236. [2020-08-19 01:53:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-19 01:53:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 267 transitions. [2020-08-19 01:53:35,043 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 267 transitions. Word has length 92 [2020-08-19 01:53:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:35,043 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 267 transitions. [2020-08-19 01:53:35,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 267 transitions. [2020-08-19 01:53:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:53:35,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:35,045 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] [2020-08-19 01:53:35,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:53:35,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:35,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:35,046 INFO L82 PathProgramCache]: Analyzing trace with hash 660673946, now seen corresponding path program 1 times [2020-08-19 01:53:35,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:35,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419153368] [2020-08-19 01:53:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,304 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:53:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:35,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419153368] [2020-08-19 01:53:35,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:35,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:35,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455046310] [2020-08-19 01:53:35,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:35,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:35,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:35,497 INFO L87 Difference]: Start difference. First operand 236 states and 267 transitions. Second operand 9 states. [2020-08-19 01:53:36,612 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:36,893 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:37,180 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:37,449 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:38,410 INFO L93 Difference]: Finished difference Result 491 states and 595 transitions. [2020-08-19 01:53:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:53:38,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 01:53:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:38,416 INFO L225 Difference]: With dead ends: 491 [2020-08-19 01:53:38,416 INFO L226 Difference]: Without dead ends: 283 [2020-08-19 01:53:38,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:53:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-19 01:53:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 241. [2020-08-19 01:53:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-19 01:53:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2020-08-19 01:53:38,481 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 108 [2020-08-19 01:53:38,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:38,481 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2020-08-19 01:53:38,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2020-08-19 01:53:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:53:38,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:38,485 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] [2020-08-19 01:53:38,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:53:38,486 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:38,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1706020648, now seen corresponding path program 1 times [2020-08-19 01:53:38,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:38,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933989821] [2020-08-19 01:53:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,819 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:38,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:53:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:38,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933989821] [2020-08-19 01:53:38,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:38,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:53:38,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672944343] [2020-08-19 01:53:38,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:53:38,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:38,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:53:38,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:53:38,975 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand 11 states. [2020-08-19 01:53:39,659 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:39,954 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:40,239 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:41,029 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:41,310 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:41,587 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:42,556 INFO L93 Difference]: Finished difference Result 501 states and 606 transitions. [2020-08-19 01:53:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:53:42,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 01:53:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:42,562 INFO L225 Difference]: With dead ends: 501 [2020-08-19 01:53:42,564 INFO L226 Difference]: Without dead ends: 288 [2020-08-19 01:53:42,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:53:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-08-19 01:53:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 245. [2020-08-19 01:53:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-19 01:53:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2020-08-19 01:53:42,635 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 108 [2020-08-19 01:53:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:42,636 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2020-08-19 01:53:42,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:53:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2020-08-19 01:53:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:53:42,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:42,639 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] [2020-08-19 01:53:42,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:53:42,640 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1946560777, now seen corresponding path program 1 times [2020-08-19 01:53:42,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:42,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614811922] [2020-08-19 01:53:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:42,971 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 01:53:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:53:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:43,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614811922] [2020-08-19 01:53:43,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:43,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:53:43,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176647725] [2020-08-19 01:53:43,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:53:43,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:43,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:53:43,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:43,151 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand 7 states. [2020-08-19 01:53:43,508 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:44,094 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:46,172 INFO L93 Difference]: Finished difference Result 683 states and 844 transitions. [2020-08-19 01:53:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:53:46,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-19 01:53:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:46,178 INFO L225 Difference]: With dead ends: 683 [2020-08-19 01:53:46,178 INFO L226 Difference]: Without dead ends: 466 [2020-08-19 01:53:46,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:53:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-19 01:53:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 424. [2020-08-19 01:53:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-08-19 01:53:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 492 transitions. [2020-08-19 01:53:46,254 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 492 transitions. Word has length 108 [2020-08-19 01:53:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:46,255 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 492 transitions. [2020-08-19 01:53:46,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:53:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 492 transitions. [2020-08-19 01:53:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 01:53:46,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:46,257 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] [2020-08-19 01:53:46,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:53:46,258 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:46,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:46,258 INFO L82 PathProgramCache]: Analyzing trace with hash 79738257, now seen corresponding path program 1 times [2020-08-19 01:53:46,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:46,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814329890] [2020-08-19 01:53:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,758 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:53:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 01:53:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 01:53:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 01:53:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:46,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814329890] [2020-08-19 01:53:46,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:46,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:53:46,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329745388] [2020-08-19 01:53:46,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:53:46,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:53:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:53:46,967 INFO L87 Difference]: Start difference. First operand 424 states and 492 transitions. Second operand 12 states. [2020-08-19 01:53:47,459 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:48,183 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:49,351 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:49,710 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:50,024 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:50,347 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:50,665 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:52,086 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:52,384 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:53,258 INFO L93 Difference]: Finished difference Result 1180 states and 1453 transitions. [2020-08-19 01:53:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:53:53,258 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-19 01:53:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:53,266 INFO L225 Difference]: With dead ends: 1180 [2020-08-19 01:53:53,266 INFO L226 Difference]: Without dead ends: 858 [2020-08-19 01:53:53,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:53:53,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-19 01:53:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 736. [2020-08-19 01:53:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-19 01:53:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 846 transitions. [2020-08-19 01:53:53,436 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 846 transitions. Word has length 112 [2020-08-19 01:53:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:53,437 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 846 transitions. [2020-08-19 01:53:53,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:53:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 846 transitions. [2020-08-19 01:53:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 01:53:53,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:53,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:53,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:53:53,442 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash -992810877, now seen corresponding path program 1 times [2020-08-19 01:53:53,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:53,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801338220] [2020-08-19 01:53:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,834 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:53,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:53,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:53:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 01:53:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 01:53:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 01:53:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-19 01:53:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 01:53:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:53:54,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801338220] [2020-08-19 01:53:54,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:54,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:53:54,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810717237] [2020-08-19 01:53:54,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:53:54,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:54,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:53:54,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:54,415 INFO L87 Difference]: Start difference. First operand 736 states and 846 transitions. Second operand 16 states. [2020-08-19 01:53:55,508 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:55,915 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:53:56,228 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:53:56,525 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:53:57,289 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 01:53:57,602 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 01:53:58,082 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-19 01:53:58,959 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 01:53:59,717 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:54:00,316 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 01:54:01,124 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-19 01:54:01,721 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-19 01:54:02,066 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:02,730 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:54:03,232 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 01:54:03,909 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-19 01:54:04,762 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:54:05,365 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-19 01:54:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:06,194 INFO L93 Difference]: Finished difference Result 1615 states and 1911 transitions. [2020-08-19 01:54:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-19 01:54:06,195 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-19 01:54:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:06,201 INFO L225 Difference]: With dead ends: 1615 [2020-08-19 01:54:06,201 INFO L226 Difference]: Without dead ends: 977 [2020-08-19 01:54:06,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 01:54:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-08-19 01:54:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 884. [2020-08-19 01:54:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-08-19 01:54:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1024 transitions. [2020-08-19 01:54:06,405 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1024 transitions. Word has length 174 [2020-08-19 01:54:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:06,406 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1024 transitions. [2020-08-19 01:54:06,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:54:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1024 transitions. [2020-08-19 01:54:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-19 01:54:06,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:06,413 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, 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, 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] [2020-08-19 01:54:06,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:54:06,414 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:06,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:06,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1611643875, now seen corresponding path program 1 times [2020-08-19 01:54:06,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:06,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255670479] [2020-08-19 01:54:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,776 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:54:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:54:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:54:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:54:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:54:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:54:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:54:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:54:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:54:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:54:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:54:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 01:54:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:54:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:54:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-19 01:54:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 01:54:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 01:54:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:54:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 01:54:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 01:54:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-19 01:54:07,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255670479] [2020-08-19 01:54:07,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:54:07,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:54:07,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326395570] [2020-08-19 01:54:07,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:54:07,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:54:07,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:54:07,361 INFO L87 Difference]: Start difference. First operand 884 states and 1024 transitions. Second operand 15 states. [2020-08-19 01:54:09,033 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:54:09,361 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:09,652 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:09,961 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:54:11,610 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:12,876 INFO L93 Difference]: Finished difference Result 2344 states and 2821 transitions. [2020-08-19 01:54:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:54:12,877 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-19 01:54:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:12,886 INFO L225 Difference]: With dead ends: 2344 [2020-08-19 01:54:12,886 INFO L226 Difference]: Without dead ends: 1393 [2020-08-19 01:54:12,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:54:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-08-19 01:54:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1174. [2020-08-19 01:54:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-08-19 01:54:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1389 transitions. [2020-08-19 01:54:13,093 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1389 transitions. Word has length 311 [2020-08-19 01:54:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:13,094 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1389 transitions. [2020-08-19 01:54:13,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:54:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1389 transitions. [2020-08-19 01:54:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-19 01:54:13,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:13,102 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:54:13,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:54:13,103 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1867648024, now seen corresponding path program 1 times [2020-08-19 01:54:13,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:13,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371305613] [2020-08-19 01:54:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,426 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:54:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:54:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:54:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:54:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:54:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:54:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:54:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:54:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:54:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:54:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:54:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:54:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 01:54:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:54:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:54:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-19 01:54:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 01:54:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-19 01:54:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:54:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 01:54:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-19 01:54:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-19 01:54:13,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371305613] [2020-08-19 01:54:13,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:54:13,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:54:13,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118082254] [2020-08-19 01:54:13,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:54:13,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:54:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:54:13,892 INFO L87 Difference]: Start difference. First operand 1174 states and 1389 transitions. Second operand 16 states. [2020-08-19 01:54:14,614 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:54:14,994 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:15,298 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:15,595 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192