/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:54:38,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:54:38,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:54:38,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:54:38,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:54:38,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:54:38,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:54:38,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:54:38,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:54:38,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:54:38,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:54:38,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:54:38,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:54:38,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:54:38,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:54:38,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:54:38,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:54:38,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:54:38,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:54:38,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:54:38,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:54:38,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:54:38,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:54:38,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:54:38,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:54:38,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:54:38,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:54:38,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:54:38,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:54:38,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:54:38,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:54:38,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:54:38,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:54:38,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:54:38,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:54:38,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:54:38,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:54:38,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:54:38,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:54:38,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:54:38,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:54:38,080 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 [2020-08-21 22:54:38,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:54:38,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:54:38,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:54:38,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:54:38,136 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:54:38,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:54:38,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:54:38,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:54:38,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:54:38,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:54:38,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:54:38,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:54:38,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:54:38,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:54:38,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:54:38,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:54:38,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:54:38,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:54:38,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:54:38,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:54:38,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:54:38,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:54:38,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:54:38,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:54:38,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:54:38,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:54:38,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:54:38,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:54:38,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:54:38,142 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:54:38,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:54:38,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:54:38,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:54:38,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:54:38,484 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:54:38,485 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-21 22:54:38,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2d13833d/d2f298907af94cc2903b8f6a81826105/FLAG8b91faac4 [2020-08-21 22:54:39,069 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:54:39,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-21 22:54:39,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2d13833d/d2f298907af94cc2903b8f6a81826105/FLAG8b91faac4 [2020-08-21 22:54:39,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2d13833d/d2f298907af94cc2903b8f6a81826105 [2020-08-21 22:54:39,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:54:39,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:54:39,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:54:39,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:54:39,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:54:39,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:54:39" (1/1) ... [2020-08-21 22:54:39,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c56d103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:39, skipping insertion in model container [2020-08-21 22:54:39,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:54:39" (1/1) ... [2020-08-21 22:54:39,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:54:39,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:54:39,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:54:39,845 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:54:40,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:54:40,084 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:54:40,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40 WrapperNode [2020-08-21 22:54:40,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:54:40,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:54:40,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:54:40,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:54:40,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (1/1) ... [2020-08-21 22:54:40,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:54:40,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:54:40,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:54:40,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:54:40,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (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 [2020-08-21 22:54:40,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:54:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:54:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:54:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:54:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:54:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:54:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:54:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:54:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:54:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:54:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:54:40,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:54:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:54:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:54:40,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:54:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:54:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:54:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:54:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:54:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:54:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:54:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:54:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:54:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:54:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:54:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:54:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:54:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:54:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:54:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:54:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:54:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:54:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:54:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:54:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:54:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:54:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:54:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:54:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:54:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:54:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:54:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:54:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:54:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:54:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:54:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:54:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:54:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:54:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:54:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:54:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:54:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:54:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:54:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:54:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:54:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:54:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:54:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:54:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:54:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:54:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:54:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:54:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:54:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:54:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:54:40,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:54:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:54:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:54:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:54:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:54:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:54:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:54:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:54:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:54:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:54:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:54:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:54:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:54:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:54:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:54:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:54:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:54:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:54:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:54:41,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:54:41,560 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:54:41,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:54:41 BoogieIcfgContainer [2020-08-21 22:54:41,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:54:41,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:54:41,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:54:41,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:54:41,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:54:39" (1/3) ... [2020-08-21 22:54:41,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc404a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:54:41, skipping insertion in model container [2020-08-21 22:54:41,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:40" (2/3) ... [2020-08-21 22:54:41,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc404a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:54:41, skipping insertion in model container [2020-08-21 22:54:41,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:54:41" (3/3) ... [2020-08-21 22:54:41,578 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2020-08-21 22:54:41,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:54:41,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:54:41,610 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:54:41,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:54:41,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:54:41,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:54:41,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:54:41,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:54:41,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:54:41,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:54:41,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:54:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-21 22:54:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:54:41,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:41,670 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] [2020-08-21 22:54:41,671 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2020-08-21 22:54:41,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:41,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458754232] [2020-08-21 22:54:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,399 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:54:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:54:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:54:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:42,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458754232] [2020-08-21 22:54:42,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:42,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:54:42,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402014696] [2020-08-21 22:54:42,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:54:42,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:42,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:54:42,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:54:42,571 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-21 22:54:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:43,866 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2020-08-21 22:54:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:54:43,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:54:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:43,883 INFO L225 Difference]: With dead ends: 328 [2020-08-21 22:54:43,883 INFO L226 Difference]: Without dead ends: 181 [2020-08-21 22:54:43,888 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 [2020-08-21 22:54:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-21 22:54:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-21 22:54:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 22:54:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2020-08-21 22:54:43,990 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2020-08-21 22:54:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:43,990 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2020-08-21 22:54:43,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:54:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2020-08-21 22:54:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:54:43,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:43,995 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] [2020-08-21 22:54:43,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:54:43,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2020-08-21 22:54:43,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:43,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609300545] [2020-08-21 22:54:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,395 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:44,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:54:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:54:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:54:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:44,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609300545] [2020-08-21 22:54:44,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:44,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:54:44,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52101973] [2020-08-21 22:54:44,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:54:44,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:54:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:54:44,462 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2020-08-21 22:54:44,956 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:45,857 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-21 22:54:45,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:54:45,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 22:54:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:45,861 INFO L225 Difference]: With dead ends: 263 [2020-08-21 22:54:45,862 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 22:54:45,863 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 [2020-08-21 22:54:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 22:54:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-21 22:54:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 22:54:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2020-08-21 22:54:45,907 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2020-08-21 22:54:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:45,907 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2020-08-21 22:54:45,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:54:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2020-08-21 22:54:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 22:54:45,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:45,910 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] [2020-08-21 22:54:45,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:54:45,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:45,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2020-08-21 22:54:45,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:45,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118909054] [2020-08-21 22:54:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,293 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:54:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 22:54:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:46,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118909054] [2020-08-21 22:54:46,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:46,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:46,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839943412] [2020-08-21 22:54:46,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:46,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:46,470 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2020-08-21 22:54:46,876 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:47,224 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:47,468 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:47,712 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:48,625 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:50,462 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2020-08-21 22:54:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:54:50,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 22:54:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:50,469 INFO L225 Difference]: With dead ends: 466 [2020-08-21 22:54:50,469 INFO L226 Difference]: Without dead ends: 355 [2020-08-21 22:54:50,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:54:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-21 22:54:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-08-21 22:54:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 22:54:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2020-08-21 22:54:50,570 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2020-08-21 22:54:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:50,571 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2020-08-21 22:54:50,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2020-08-21 22:54:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 22:54:50,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:50,575 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:54:50,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:54:50,575 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2020-08-21 22:54:50,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:50,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487847959] [2020-08-21 22:54:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,891 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:54:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:51,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:54:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:51,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 22:54:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:54:51,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487847959] [2020-08-21 22:54:51,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:51,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769382563] [2020-08-21 22:54:51,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:51,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:51,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:51,053 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2020-08-21 22:54:51,432 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:52,173 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:52,974 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:53,306 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:53,596 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:53,844 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:54,650 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2020-08-21 22:54:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:54:54,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 22:54:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:54,657 INFO L225 Difference]: With dead ends: 755 [2020-08-21 22:54:54,657 INFO L226 Difference]: Without dead ends: 489 [2020-08-21 22:54:54,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:54:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-08-21 22:54:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2020-08-21 22:54:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-21 22:54:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2020-08-21 22:54:54,766 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2020-08-21 22:54:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:54,767 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2020-08-21 22:54:54,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2020-08-21 22:54:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:54:54,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:54,771 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] [2020-08-21 22:54:54,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:54:54,771 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:54,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:54,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2020-08-21 22:54:54,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:54,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665524119] [2020-08-21 22:54:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,061 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:54:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 22:54:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:54:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:55,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665524119] [2020-08-21 22:54:55,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:55,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:55,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833719817] [2020-08-21 22:54:55,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:55,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:55,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:55,235 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2020-08-21 22:54:56,417 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:56,682 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:54:56,933 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:57,169 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:57,939 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2020-08-21 22:54:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:54:57,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 22:54:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:57,944 INFO L225 Difference]: With dead ends: 903 [2020-08-21 22:54:57,944 INFO L226 Difference]: Without dead ends: 510 [2020-08-21 22:54:57,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:54:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-08-21 22:54:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2020-08-21 22:54:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-21 22:54:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-21 22:54:58,039 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2020-08-21 22:54:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:58,039 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-21 22:54:58,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-21 22:54:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:54:58,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:58,042 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] [2020-08-21 22:54:58,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:54:58,042 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:58,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2020-08-21 22:54:58,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:58,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299612734] [2020-08-21 22:54:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,370 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:54:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 22:54:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:54:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:58,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299612734] [2020-08-21 22:54:58,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:58,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:54:58,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909605457] [2020-08-21 22:54:58,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:54:58,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:58,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:54:58,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:54:58,515 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2020-08-21 22:54:59,365 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:59,605 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:59,831 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:00,667 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:00,949 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:01,202 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:02,153 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2020-08-21 22:55:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:55:02,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 22:55:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:02,159 INFO L225 Difference]: With dead ends: 930 [2020-08-21 22:55:02,159 INFO L226 Difference]: Without dead ends: 524 [2020-08-21 22:55:02,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:55:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-21 22:55:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2020-08-21 22:55:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-21 22:55:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2020-08-21 22:55:02,289 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2020-08-21 22:55:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:02,291 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2020-08-21 22:55:02,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:55:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2020-08-21 22:55:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:55:02,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:02,296 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] [2020-08-21 22:55:02,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:55:02,298 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:02,298 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2020-08-21 22:55:02,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:02,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752716407] [2020-08-21 22:55:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,565 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:55:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 22:55:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:55:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:55:02,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752716407] [2020-08-21 22:55:02,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:55:02,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:55:02,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456248188] [2020-08-21 22:55:02,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:55:02,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:02,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:55:02,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:55:02,722 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2020-08-21 22:55:03,071 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:03,663 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:05,782 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2020-08-21 22:55:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:55:05,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 22:55:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:05,792 INFO L225 Difference]: With dead ends: 1411 [2020-08-21 22:55:05,792 INFO L226 Difference]: Without dead ends: 997 [2020-08-21 22:55:05,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:55:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-08-21 22:55:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2020-08-21 22:55:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-21 22:55:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2020-08-21 22:55:06,039 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2020-08-21 22:55:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:06,040 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2020-08-21 22:55:06,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:55:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2020-08-21 22:55:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 22:55:06,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:06,044 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] [2020-08-21 22:55:06,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:55:06,045 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2020-08-21 22:55:06,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:06,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665567381] [2020-08-21 22:55:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,450 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:55:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 22:55:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 22:55:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 22:55:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:55:06,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665567381] [2020-08-21 22:55:06,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:55:06,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:55:06,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510962140] [2020-08-21 22:55:06,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:55:06,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:06,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:55:06,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:55:06,669 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2020-08-21 22:55:07,163 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:07,800 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:08,504 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:08,858 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:09,119 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:09,420 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:09,707 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:11,809 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:12,084 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:12,644 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2020-08-21 22:55:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 22:55:12,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 22:55:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:12,656 INFO L225 Difference]: With dead ends: 2611 [2020-08-21 22:55:12,656 INFO L226 Difference]: Without dead ends: 1912 [2020-08-21 22:55:12,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 22:55:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-08-21 22:55:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2020-08-21 22:55:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 22:55:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2020-08-21 22:55:12,955 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2020-08-21 22:55:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:12,956 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2020-08-21 22:55:12,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:55:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2020-08-21 22:55:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 22:55:12,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:12,961 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] [2020-08-21 22:55:12,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:55:12,961 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2020-08-21 22:55:12,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:12,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174446188] [2020-08-21 22:55:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,346 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:55:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 22:55:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 22:55:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:55:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 22:55:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 22:55:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 22:55:13,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174446188] [2020-08-21 22:55:13,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:13,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:55:13,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996565302] [2020-08-21 22:55:13,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:55:13,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:13,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:55:13,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:55:13,597 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states. [2020-08-21 22:55:14,238 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:14,586 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:14,868 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:15,123 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:15,865 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:16,158 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:16,500 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:16,792 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:17,924 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:18,608 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:18,902 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:19,234 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:19,798 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:20,191 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:20,614 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:21,416 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:21,757 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:22,579 INFO L93 Difference]: Finished difference Result 3483 states and 4326 transitions. [2020-08-21 22:55:22,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-21 22:55:22,580 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-21 22:55:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:22,595 INFO L225 Difference]: With dead ends: 3483 [2020-08-21 22:55:22,596 INFO L226 Difference]: Without dead ends: 2085 [2020-08-21 22:55:22,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-21 22:55:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-08-21 22:55:23,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893. [2020-08-21 22:55:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-08-21 22:55:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions. [2020-08-21 22:55:23,053 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159 [2020-08-21 22:55:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:23,054 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions. [2020-08-21 22:55:23,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 22:55:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions. [2020-08-21 22:55:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-21 22:55:23,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:23,064 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:55:23,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:55:23,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash 430621663, now seen corresponding path program 1 times [2020-08-21 22:55:23,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:23,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758758970] [2020-08-21 22:55:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,438 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:55:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:55:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 22:55:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:55:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 22:55:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 22:55:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-21 22:55:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 22:55:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-21 22:55:24,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758758970] [2020-08-21 22:55:24,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:24,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 22:55:24,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61097724] [2020-08-21 22:55:24,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:55:24,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:24,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:55:24,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:55:24,168 INFO L87 Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states. [2020-08-21 22:55:25,790 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:26,060 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:26,302 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:26,551 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:27,571 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:29,432 INFO L93 Difference]: Finished difference Result 5185 states and 6381 transitions. [2020-08-21 22:55:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:55:29,433 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-21 22:55:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:29,452 INFO L225 Difference]: With dead ends: 5185 [2020-08-21 22:55:29,452 INFO L226 Difference]: Without dead ends: 3002 [2020-08-21 22:55:29,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:55:29,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-08-21 22:55:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604. [2020-08-21 22:55:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-08-21 22:55:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions. [2020-08-21 22:55:30,015 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 277 [2020-08-21 22:55:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:30,015 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions. [2020-08-21 22:55:30,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 22:55:30,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions. [2020-08-21 22:55:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-08-21 22:55:30,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:30,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:55:30,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:55:30,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:30,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:30,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1375191224, now seen corresponding path program 1 times [2020-08-21 22:55:30,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:30,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402865095] [2020-08-21 22:55:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,392 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:55:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:55:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:55:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 22:55:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:55:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 22:55:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 22:55:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-21 22:55:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-21 22:55:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-08-21 22:55:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 91 proven. 36 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-08-21 22:55:30,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402865095] [2020-08-21 22:55:30,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:30,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:55:30,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707264162] [2020-08-21 22:55:30,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:55:30,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:30,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:55:30,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:55:30,939 INFO L87 Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states. [2020-08-21 22:55:31,562 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:31,904 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:32,159 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:32,418 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:33,231 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:34,278 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:34,580 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:34,831 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:35,411 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:36,224 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:36,541 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191