/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:04:50,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:04:50,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:04:50,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:04:50,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:04:50,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:04:50,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:04:50,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:04:50,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:04:50,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:04:50,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:04:50,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:04:50,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:04:50,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:04:50,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:04:50,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:04:50,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:04:50,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:04:50,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:04:50,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:04:50,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:04:50,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:04:50,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:04:50,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:04:50,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:04:50,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:04:50,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:04:50,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:04:50,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:04:50,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:04:50,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:04:50,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:04:50,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:04:50,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:04:50,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:04:50,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:04:50,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:04:50,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:04:50,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:04:50,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:04:50,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:04:50,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:04:50,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:04:50,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:04:50,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:04:50,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:04:50,316 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:04:50,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:04:50,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:04:50,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:04:50,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:04:50,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:04:50,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:04:50,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:04:50,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:04:50,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:04:50,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:04:50,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:04:50,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:04:50,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:04:50,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:04:50,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:04:50,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:04:50,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:04:50,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:04:50,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:04:50,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:04:50,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:04:50,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:04:50,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:04:50,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:04:50,322 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 [2020-08-18 16:04:50,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:04:50,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:04:50,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:04:50,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:04:50,671 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:04:50,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-18 16:04:50,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcf6cf12c/c8a92dc3de0e4c2d939ba709bc9b366f/FLAG1b87953af [2020-08-18 16:04:51,318 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:04:51,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-18 16:04:51,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcf6cf12c/c8a92dc3de0e4c2d939ba709bc9b366f/FLAG1b87953af [2020-08-18 16:04:51,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcf6cf12c/c8a92dc3de0e4c2d939ba709bc9b366f [2020-08-18 16:04:51,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:04:51,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:04:51,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:04:51,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:04:51,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:04:51,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:04:51" (1/1) ... [2020-08-18 16:04:51,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:51, skipping insertion in model container [2020-08-18 16:04:51,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:04:51" (1/1) ... [2020-08-18 16:04:51,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:04:51,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:04:52,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:04:52,121 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:04:52,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:04:52,270 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:04:52,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52 WrapperNode [2020-08-18 16:04:52,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:04:52,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:04:52,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:04:52,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:04:52,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... [2020-08-18 16:04:52,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:04:52,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:04:52,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:04:52,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:04:52,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:04:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:04:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:04:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:04:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:04:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:04:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:04:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:04:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:04:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:04:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:04:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:04:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:04:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:04:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:04:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:04:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:04:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:04:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:04:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:04:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:04:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:04:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:04:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:04:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:04:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:04:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:04:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:04:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:04:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:04:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:04:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:04:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:04:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:04:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:04:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:04:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:04:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:04:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:04:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:04:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:04:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:04:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:04:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:04:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:04:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:04:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:04:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:04:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:04:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:04:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:04:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:04:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:04:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:04:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:04:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:04:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:04:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:04:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:04:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:04:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:04:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:04:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:04:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:04:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:04:55,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:04:55,644 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:04:55,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:04:55 BoogieIcfgContainer [2020-08-18 16:04:55,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:04:55,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:04:55,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:04:55,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:04:55,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:04:51" (1/3) ... [2020-08-18 16:04:55,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a26a2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:04:55, skipping insertion in model container [2020-08-18 16:04:55,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:52" (2/3) ... [2020-08-18 16:04:55,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a26a2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:04:55, skipping insertion in model container [2020-08-18 16:04:55,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:04:55" (3/3) ... [2020-08-18 16:04:55,666 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-18 16:04:55,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:04:55,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:04:55,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:04:55,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:04:55,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:04:55,719 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:04:55,719 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:04:55,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:04:55,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:04:55,720 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:04:55,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:04:55,743 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-18 16:04:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:04:55,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:55,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:04:55,755 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-18 16:04:55,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:55,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853304039] [2020-08-18 16:04:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,534 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:04:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:04:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:56,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853304039] [2020-08-18 16:04:56,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:56,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:04:56,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692447676] [2020-08-18 16:04:56,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:04:56,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:56,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:04:56,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:04:56,677 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-18 16:04:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:57,916 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-18 16:04:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:04:57,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:04:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:57,932 INFO L225 Difference]: With dead ends: 296 [2020-08-18 16:04:57,933 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 16:04:57,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:04:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 16:04:58,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 16:04:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 16:04:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-18 16:04:58,026 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-18 16:04:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:58,027 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-18 16:04:58,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:04:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-18 16:04:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:04:58,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:58,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:04:58,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:04:58,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:58,032 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-18 16:04:58,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:58,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053135218] [2020-08-18 16:04:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,387 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:04:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:04:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:58,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053135218] [2020-08-18 16:04:58,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:58,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:04:58,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593855773] [2020-08-18 16:04:58,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:04:58,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:58,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:04:58,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:04:58,450 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-18 16:04:58,940 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:04:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:59,765 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-18 16:04:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:04:59,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:04:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:59,769 INFO L225 Difference]: With dead ends: 237 [2020-08-18 16:04:59,769 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 16:04:59,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:04:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 16:04:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 16:04:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 16:04:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-18 16:04:59,813 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-18 16:04:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:59,814 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-18 16:04:59,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:04:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-18 16:04:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:04:59,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:59,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:04:59,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:04:59,817 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-18 16:04:59,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:59,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826103628] [2020-08-18 16:04:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,154 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:05:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:05:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:00,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826103628] [2020-08-18 16:05:00,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:00,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:05:00,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267238209] [2020-08-18 16:05:00,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:05:00,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:05:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:05:00,276 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-18 16:05:00,727 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:01,017 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:01,281 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:01,523 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:02,813 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-18 16:05:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:05:02,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 16:05:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:02,816 INFO L225 Difference]: With dead ends: 250 [2020-08-18 16:05:02,816 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 16:05:02,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:05:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 16:05:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 16:05:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 16:05:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 16:05:02,856 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-18 16:05:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:02,856 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 16:05:02,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:05:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 16:05:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:05:02,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:02,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:02,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:05:02,860 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-18 16:05:02,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:02,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104307285] [2020-08-18 16:05:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,111 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:05:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:05:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:05:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:03,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104307285] [2020-08-18 16:05:03,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:03,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:05:03,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186015361] [2020-08-18 16:05:03,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:05:03,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:05:03,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:05:03,246 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-18 16:05:03,676 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:04,988 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:05,711 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-18 16:05:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:05:05,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 16:05:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:05,715 INFO L225 Difference]: With dead ends: 349 [2020-08-18 16:05:05,716 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 16:05:05,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:05:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 16:05:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-18 16:05:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-18 16:05:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-18 16:05:05,776 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-18 16:05:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:05,777 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-18 16:05:05,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:05:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-18 16:05:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 16:05:05,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:05,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:05,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:05:05,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-18 16:05:05,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:05,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355228002] [2020-08-18 16:05:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,111 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:05:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 16:05:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 16:05:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:06,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355228002] [2020-08-18 16:05:06,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:06,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:05:06,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105964540] [2020-08-18 16:05:06,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:05:06,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:06,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:05:06,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:05:06,275 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-18 16:05:06,822 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:08,117 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:08,395 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:08,665 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:08,906 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:10,121 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-18 16:05:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:05:10,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 16:05:10,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:10,128 INFO L225 Difference]: With dead ends: 611 [2020-08-18 16:05:10,128 INFO L226 Difference]: Without dead ends: 434 [2020-08-18 16:05:10,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:05:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-18 16:05:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-18 16:05:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-18 16:05:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-18 16:05:10,243 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-18 16:05:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:10,244 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-18 16:05:10,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:05:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-18 16:05:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:05:10,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:10,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:10,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:05:10,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:10,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-18 16:05:10,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:10,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874855154] [2020-08-18 16:05:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,525 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:05:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:05:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:05:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:10,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874855154] [2020-08-18 16:05:10,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:10,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:10,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579007041] [2020-08-18 16:05:10,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:10,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:10,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:10,652 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-18 16:05:11,184 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:12,402 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:12,646 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:12,910 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:13,218 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:14,356 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-18 16:05:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:05:14,357 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 16:05:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:14,362 INFO L225 Difference]: With dead ends: 802 [2020-08-18 16:05:14,362 INFO L226 Difference]: Without dead ends: 472 [2020-08-18 16:05:14,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:05:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-18 16:05:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-18 16:05:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-18 16:05:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-18 16:05:14,460 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-18 16:05:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:14,460 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-18 16:05:14,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-18 16:05:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 16:05:14,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:14,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:14,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:05:14,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:14,463 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-18 16:05:14,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:14,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632680460] [2020-08-18 16:05:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,703 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:05:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:05:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:05:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:14,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632680460] [2020-08-18 16:05:14,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:14,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:14,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628321821] [2020-08-18 16:05:14,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:14,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:14,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:14,848 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-18 16:05:16,135 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:16,391 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:05:16,663 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:16,895 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:17,843 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-18 16:05:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:05:17,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 16:05:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:17,848 INFO L225 Difference]: With dead ends: 805 [2020-08-18 16:05:17,849 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 16:05:17,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:05:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 16:05:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-18 16:05:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-18 16:05:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-18 16:05:17,947 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-18 16:05:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:17,948 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-18 16:05:17,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-18 16:05:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 16:05:17,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:17,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:17,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:05:17,952 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:17,952 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-18 16:05:17,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:17,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552194760] [2020-08-18 16:05:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,227 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:05:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:05:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:05:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:18,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552194760] [2020-08-18 16:05:18,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:18,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:05:18,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115190099] [2020-08-18 16:05:18,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:05:18,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:05:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:05:18,431 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-18 16:05:19,527 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:19,765 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:20,007 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:20,722 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:20,966 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:21,204 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:22,174 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-18 16:05:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:05:22,175 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-18 16:05:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:22,179 INFO L225 Difference]: With dead ends: 829 [2020-08-18 16:05:22,179 INFO L226 Difference]: Without dead ends: 490 [2020-08-18 16:05:22,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:05:22,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-18 16:05:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-18 16:05:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-18 16:05:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-18 16:05:22,256 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-18 16:05:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:22,257 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-18 16:05:22,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:05:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-18 16:05:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 16:05:22,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:22,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:22,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:05:22,259 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-18 16:05:22,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:22,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505951866] [2020-08-18 16:05:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,548 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:22,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:05:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:05:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:05:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:22,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505951866] [2020-08-18 16:05:22,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:22,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:05:22,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869346324] [2020-08-18 16:05:22,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:05:22,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:05:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:05:22,679 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-18 16:05:23,145 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:23,692 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:26,168 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-18 16:05:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:05:26,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 16:05:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:26,173 INFO L225 Difference]: With dead ends: 1177 [2020-08-18 16:05:26,174 INFO L226 Difference]: Without dead ends: 830 [2020-08-18 16:05:26,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 16:05:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-18 16:05:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-18 16:05:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-18 16:05:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-18 16:05:26,295 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-18 16:05:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:26,295 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-18 16:05:26,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:05:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-18 16:05:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:05:26,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:26,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:26,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:05:26,298 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-18 16:05:26,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:26,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370981090] [2020-08-18 16:05:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,577 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:05:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:05:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:05:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:05:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:05:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:26,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370981090] [2020-08-18 16:05:26,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:26,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:05:26,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750639816] [2020-08-18 16:05:26,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:05:26,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:26,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:05:26,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:05:26,689 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-18 16:05:27,683 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:30,193 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-18 16:05:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:05:30,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 16:05:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:30,201 INFO L225 Difference]: With dead ends: 1357 [2020-08-18 16:05:30,202 INFO L226 Difference]: Without dead ends: 1354 [2020-08-18 16:05:30,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:05:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-18 16:05:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-18 16:05:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-18 16:05:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-18 16:05:30,400 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-18 16:05:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:30,400 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-18 16:05:30,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:05:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-18 16:05:30,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 16:05:30,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:30,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:30,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:05:30,406 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:30,406 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-18 16:05:30,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:30,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215774819] [2020-08-18 16:05:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,764 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:30,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:05:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:05:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:05:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:05:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:05:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 16:05:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 16:05:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:05:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 16:05:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 16:05:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-18 16:05:31,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215774819] [2020-08-18 16:05:31,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:05:31,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:05:31,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494705359] [2020-08-18 16:05:31,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:05:31,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:05:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:05:31,200 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-18 16:05:32,403 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:32,808 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:05:33,068 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:33,308 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:34,049 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:35,254 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:35,631 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:37,047 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:37,301 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:37,589 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:37,844 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:38,094 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:38,346 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:38,624 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:38,891 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:39,855 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-18 16:05:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 16:05:39,856 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-18 16:05:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:39,865 INFO L225 Difference]: With dead ends: 2141 [2020-08-18 16:05:39,866 INFO L226 Difference]: Without dead ends: 1042 [2020-08-18 16:05:39,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 16:05:39,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-18 16:05:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-18 16:05:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-18 16:05:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-18 16:05:40,050 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-18 16:05:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:40,053 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-18 16:05:40,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:05:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-18 16:05:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 16:05:40,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:40,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:40,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:05:40,058 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-18 16:05:40,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:40,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941296449] [2020-08-18 16:05:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,405 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:40,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:05:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:05:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:05:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:05:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:05:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 16:05:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 16:05:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 16:05:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 16:05:40,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941296449] [2020-08-18 16:05:40,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:05:40,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:05:40,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764350184] [2020-08-18 16:05:40,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:05:40,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:40,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:05:40,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:05:40,708 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-18 16:05:41,427 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:41,658 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:41,882 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:42,850 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:44,135 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-18 16:05:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 16:05:44,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 16:05:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:44,136 INFO L225 Difference]: With dead ends: 1616 [2020-08-18 16:05:44,136 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:05:44,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 16:05:44,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:05:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:05:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:05:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:05:44,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-18 16:05:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:44,142 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:05:44,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:05:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:05:44,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:05:44,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:05:44,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:05:44,607 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-18 16:05:44,736 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-18 16:05:44,882 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-18 16:05:45,082 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-18 16:05:45,250 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-18 16:05:45,431 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-18 16:05:45,714 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-18 16:05:47,575 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-18 16:05:48,208 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293