/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:03:09,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:03:09,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:03:09,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:03:09,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:03:09,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:03:09,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:03:09,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:03:09,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:03:09,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:03:09,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:03:09,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:03:09,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:03:09,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:03:09,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:03:09,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:03:09,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:03:09,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:03:09,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:03:09,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:03:09,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:03:09,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:03:09,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:03:09,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:03:09,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:03:09,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:03:09,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:03:09,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:03:09,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:03:09,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:03:09,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:03:09,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:03:09,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:03:09,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:03:09,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:03:09,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:03:09,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:03:09,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:03:09,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:03:09,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:03:09,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:03:09,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:03:09,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:03:09,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:03:09,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:03:09,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:03:09,240 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:03:09,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:03:09,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:03:09,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:03:09,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:03:09,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:03:09,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:03:09,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:03:09,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:03:09,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:03:09,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:03:09,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:03:09,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:03:09,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:03:09,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:03:09,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:03:09,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:03:09,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:03:09,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:03:09,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:03:09,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:03:09,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:03:09,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:03:09,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:03:09,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:03:09,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:03:09,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:03:09,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:03:09,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:03:09,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:03:09,542 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:03:09,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-21 18:03:09,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfbc43a3c/2d8286294e5a47d9aa9e5ee5b5938bf9/FLAGc485f602e [2020-08-21 18:03:10,162 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:03:10,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-21 18:03:10,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfbc43a3c/2d8286294e5a47d9aa9e5ee5b5938bf9/FLAGc485f602e [2020-08-21 18:03:10,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfbc43a3c/2d8286294e5a47d9aa9e5ee5b5938bf9 [2020-08-21 18:03:10,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:03:10,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:03:10,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:03:10,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:03:10,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:03:10,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:03:10" (1/1) ... [2020-08-21 18:03:10,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:10, skipping insertion in model container [2020-08-21 18:03:10,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:03:10" (1/1) ... [2020-08-21 18:03:10,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:03:10,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:03:11,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:03:11,049 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:03:11,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:03:11,188 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:03:11,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11 WrapperNode [2020-08-21 18:03:11,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:03:11,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:03:11,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:03:11,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:03:11,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... [2020-08-21 18:03:11,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:03:11,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:03:11,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:03:11,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:03:11,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:03:11,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:03:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:03:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:03:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:03:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:03:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:03:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:03:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:03:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:03:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:03:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:03:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:03:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:03:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:03:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:03:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:03:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:03:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:03:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:03:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:03:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:03:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:03:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:03:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:03:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:03:11,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:03:11,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:03:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:03:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:03:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:03:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:03:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:03:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:03:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:03:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:03:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:03:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:03:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:03:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:03:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:03:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:03:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:03:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:03:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:03:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:03:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:03:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:03:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:03:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:03:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:03:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:03:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:03:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:03:12,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:03:12,487 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:03:12,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:03:12 BoogieIcfgContainer [2020-08-21 18:03:12,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:03:12,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:03:12,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:03:12,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:03:12,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:03:10" (1/3) ... [2020-08-21 18:03:12,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:03:12, skipping insertion in model container [2020-08-21 18:03:12,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:03:11" (2/3) ... [2020-08-21 18:03:12,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:03:12, skipping insertion in model container [2020-08-21 18:03:12,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:03:12" (3/3) ... [2020-08-21 18:03:12,502 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-08-21 18:03:12,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:03:12,521 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:03:12,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:03:12,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:03:12,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:03:12,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:03:12,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:03:12,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:03:12,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:03:12,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:03:12,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:03:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-21 18:03:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:03:12,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:12,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:12,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:12,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:12,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2020-08-21 18:03:12,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:12,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047472392] [2020-08-21 18:03:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,296 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:13,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:03:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:03:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:03:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:13,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047472392] [2020-08-21 18:03:13,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:13,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:03:13,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087718296] [2020-08-21 18:03:13,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:03:13,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:13,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:03:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:03:13,440 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-21 18:03:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:14,602 INFO L93 Difference]: Finished difference Result 314 states and 404 transitions. [2020-08-21 18:03:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:03:14,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 18:03:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:14,619 INFO L225 Difference]: With dead ends: 314 [2020-08-21 18:03:14,619 INFO L226 Difference]: Without dead ends: 173 [2020-08-21 18:03:14,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:03:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-21 18:03:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-08-21 18:03:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-21 18:03:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2020-08-21 18:03:14,741 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2020-08-21 18:03:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:14,742 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2020-08-21 18:03:14,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:03:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2020-08-21 18:03:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 18:03:14,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:14,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:14,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:03:14,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2020-08-21 18:03:14,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:14,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32730244] [2020-08-21 18:03:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,146 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:03:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:03:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:03:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:15,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32730244] [2020-08-21 18:03:15,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:15,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:03:15,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994850728] [2020-08-21 18:03:15,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:03:15,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:15,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:03:15,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:03:15,307 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 9 states. [2020-08-21 18:03:15,713 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:16,034 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:16,289 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:16,553 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:17,561 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:19,329 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2020-08-21 18:03:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:03:19,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 18:03:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:19,343 INFO L225 Difference]: With dead ends: 481 [2020-08-21 18:03:19,343 INFO L226 Difference]: Without dead ends: 367 [2020-08-21 18:03:19,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:03:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-21 18:03:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2020-08-21 18:03:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-21 18:03:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-08-21 18:03:19,493 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 64 [2020-08-21 18:03:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:19,493 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-08-21 18:03:19,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:03:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-08-21 18:03:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:03:19,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:19,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:19,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:03:19,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2020-08-21 18:03:19,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:19,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182011163] [2020-08-21 18:03:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,826 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:03:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:03:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:03:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:03:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:03:19,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182011163] [2020-08-21 18:03:19,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:19,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:03:19,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731035369] [2020-08-21 18:03:19,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:03:19,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:19,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:03:19,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:03:19,972 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 9 states. [2020-08-21 18:03:20,404 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:20,997 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:21,902 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:22,250 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:22,702 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:22,945 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:23,780 INFO L93 Difference]: Finished difference Result 829 states and 1126 transitions. [2020-08-21 18:03:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:03:23,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 18:03:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:23,787 INFO L225 Difference]: With dead ends: 829 [2020-08-21 18:03:23,788 INFO L226 Difference]: Without dead ends: 544 [2020-08-21 18:03:23,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:03:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-21 18:03:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2020-08-21 18:03:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-21 18:03:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 573 transitions. [2020-08-21 18:03:23,910 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 573 transitions. Word has length 70 [2020-08-21 18:03:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:23,911 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 573 transitions. [2020-08-21 18:03:23,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:03:23,912 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 573 transitions. [2020-08-21 18:03:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 18:03:23,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:23,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:23,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:03:23,915 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:23,915 INFO L82 PathProgramCache]: Analyzing trace with hash 571882893, now seen corresponding path program 1 times [2020-08-21 18:03:23,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:23,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591108718] [2020-08-21 18:03:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,167 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:03:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:03:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:03:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 18:03:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:24,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591108718] [2020-08-21 18:03:24,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:24,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:03:24,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605002251] [2020-08-21 18:03:24,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:03:24,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:24,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:03:24,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:03:24,259 INFO L87 Difference]: Start difference. First operand 454 states and 573 transitions. Second operand 6 states. [2020-08-21 18:03:24,725 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:25,805 INFO L93 Difference]: Finished difference Result 810 states and 1016 transitions. [2020-08-21 18:03:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:03:25,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-08-21 18:03:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:25,810 INFO L225 Difference]: With dead ends: 810 [2020-08-21 18:03:25,810 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 18:03:25,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:03:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 18:03:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 412. [2020-08-21 18:03:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-21 18:03:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2020-08-21 18:03:25,880 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 88 [2020-08-21 18:03:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:25,881 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2020-08-21 18:03:25,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:03:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2020-08-21 18:03:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:03:25,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:25,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:25,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:03:25,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2020-08-21 18:03:25,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:25,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344260542] [2020-08-21 18:03:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,138 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:03:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:03:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:03:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:03:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:26,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344260542] [2020-08-21 18:03:26,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:26,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:03:26,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199558242] [2020-08-21 18:03:26,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:03:26,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:26,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:03:26,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:03:26,277 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 9 states. [2020-08-21 18:03:26,596 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:27,607 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:27,858 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:28,150 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:28,423 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:29,450 INFO L93 Difference]: Finished difference Result 1234 states and 1655 transitions. [2020-08-21 18:03:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:03:29,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 18:03:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:29,459 INFO L225 Difference]: With dead ends: 1234 [2020-08-21 18:03:29,459 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 18:03:29,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:03:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 18:03:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 727. [2020-08-21 18:03:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-08-21 18:03:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-08-21 18:03:29,631 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 92 [2020-08-21 18:03:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:29,633 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-08-21 18:03:29,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:03:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-08-21 18:03:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:03:29,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:29,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:29,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:03:29,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:29,640 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2020-08-21 18:03:29,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:29,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945035885] [2020-08-21 18:03:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,913 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:03:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:03:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:03:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:03:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:30,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945035885] [2020-08-21 18:03:30,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:30,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:03:30,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220980224] [2020-08-21 18:03:30,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:03:30,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:30,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:03:30,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:03:30,039 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 9 states. [2020-08-21 18:03:31,024 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:31,283 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:03:31,537 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:31,788 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:32,486 INFO L93 Difference]: Finished difference Result 1548 states and 1977 transitions. [2020-08-21 18:03:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:03:32,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 18:03:32,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:32,492 INFO L225 Difference]: With dead ends: 1548 [2020-08-21 18:03:32,492 INFO L226 Difference]: Without dead ends: 849 [2020-08-21 18:03:32,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:03:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-08-21 18:03:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-08-21 18:03:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-08-21 18:03:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 901 transitions. [2020-08-21 18:03:32,620 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 901 transitions. Word has length 92 [2020-08-21 18:03:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:32,621 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 901 transitions. [2020-08-21 18:03:32,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:03:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 901 transitions. [2020-08-21 18:03:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:03:32,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:32,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:32,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:03:32,629 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:32,630 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2020-08-21 18:03:32,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:32,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793384398] [2020-08-21 18:03:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:32,990 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:03:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:03:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:03:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:03:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:33,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793384398] [2020-08-21 18:03:33,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:33,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:03:33,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923480268] [2020-08-21 18:03:33,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:03:33,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:33,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:03:33,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:03:33,196 INFO L87 Difference]: Start difference. First operand 747 states and 901 transitions. Second operand 11 states. [2020-08-21 18:03:33,756 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:33,989 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:34,222 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:34,940 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:35,201 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:35,450 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:36,408 INFO L93 Difference]: Finished difference Result 1410 states and 1790 transitions. [2020-08-21 18:03:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:03:36,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 18:03:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:36,418 INFO L225 Difference]: With dead ends: 1410 [2020-08-21 18:03:36,418 INFO L226 Difference]: Without dead ends: 691 [2020-08-21 18:03:36,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:03:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-08-21 18:03:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 618. [2020-08-21 18:03:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-21 18:03:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 727 transitions. [2020-08-21 18:03:36,517 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 727 transitions. Word has length 92 [2020-08-21 18:03:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:36,517 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 727 transitions. [2020-08-21 18:03:36,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:03:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 727 transitions. [2020-08-21 18:03:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 18:03:36,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:36,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:36,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:03:36,523 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2020-08-21 18:03:36,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:36,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283097808] [2020-08-21 18:03:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,886 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:03:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:03:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:03:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:03:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:03:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:03:37,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283097808] [2020-08-21 18:03:37,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:03:37,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:03:37,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512569385] [2020-08-21 18:03:37,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:03:37,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:37,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:03:37,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:03:37,079 INFO L87 Difference]: Start difference. First operand 618 states and 727 transitions. Second operand 12 states. [2020-08-21 18:03:37,544 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:38,216 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:38,913 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:39,251 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:39,500 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:39,771 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:40,043 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:41,749 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:42,053 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:42,506 INFO L93 Difference]: Finished difference Result 1813 states and 2317 transitions. [2020-08-21 18:03:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:03:42,507 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 18:03:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:42,517 INFO L225 Difference]: With dead ends: 1813 [2020-08-21 18:03:42,517 INFO L226 Difference]: Without dead ends: 1405 [2020-08-21 18:03:42,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:03:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-21 18:03:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1271. [2020-08-21 18:03:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-21 18:03:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1497 transitions. [2020-08-21 18:03:42,714 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1497 transitions. Word has length 96 [2020-08-21 18:03:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:42,715 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1497 transitions. [2020-08-21 18:03:42,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:03:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1497 transitions. [2020-08-21 18:03:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 18:03:42,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:42,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:42,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:03:42,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:42,720 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2020-08-21 18:03:42,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:42,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148753821] [2020-08-21 18:03:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,055 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:03:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:03:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:03:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:03:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 18:03:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:03:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 18:03:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:03:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 18:03:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 18:03:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:03:43,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148753821] [2020-08-21 18:03:43,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:03:43,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:03:43,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313748853] [2020-08-21 18:03:43,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:03:43,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:43,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:03:43,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:03:43,445 INFO L87 Difference]: Start difference. First operand 1271 states and 1497 transitions. Second operand 16 states. [2020-08-21 18:03:44,186 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:44,532 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:03:44,782 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:03:45,021 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:03:45,649 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:45,944 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:46,316 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:03:46,581 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:03:47,584 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:48,190 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:48,475 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:03:48,807 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:49,347 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:49,730 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:50,104 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:03:50,801 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:51,088 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:03:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:03:51,863 INFO L93 Difference]: Finished difference Result 2793 states and 3416 transitions. [2020-08-21 18:03:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 18:03:51,864 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-21 18:03:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:03:51,875 INFO L225 Difference]: With dead ends: 2793 [2020-08-21 18:03:51,875 INFO L226 Difference]: Without dead ends: 1726 [2020-08-21 18:03:51,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 18:03:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-08-21 18:03:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1529. [2020-08-21 18:03:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-08-21 18:03:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1785 transitions. [2020-08-21 18:03:52,258 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1785 transitions. Word has length 155 [2020-08-21 18:03:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:03:52,259 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 1785 transitions. [2020-08-21 18:03:52,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:03:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1785 transitions. [2020-08-21 18:03:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-21 18:03:52,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:03:52,265 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:03:52,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:03:52,266 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:03:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:03:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2020-08-21 18:03:52,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:03:52,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914566373] [2020-08-21 18:03:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:03:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,557 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:03:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:03:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:03:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:03:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:03:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:03:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:03:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:03:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:03:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 18:03:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:03:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:03:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:03:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 18:03:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:03:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:03:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:03:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:03:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-21 18:03:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:03:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-21 18:03:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:03:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:03:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:03:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 18:03:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:52,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:03:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:03:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-21 18:03:53,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914566373] [2020-08-21 18:03:53,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:03:53,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:03:53,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111057486] [2020-08-21 18:03:53,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:03:53,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:03:53,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:03:53,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:03:53,158 INFO L87 Difference]: Start difference. First operand 1529 states and 1785 transitions. Second operand 15 states. [2020-08-21 18:03:54,491 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:54,715 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:03:54,984 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:55,288 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:55,547 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:03:56,446 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:03:57,020 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 18:03:57,504 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 18:03:57,931 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:04:00,131 INFO L93 Difference]: Finished difference Result 4301 states and 5229 transitions. [2020-08-21 18:04:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:04:00,138 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-21 18:04:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:04:00,154 INFO L225 Difference]: With dead ends: 4301 [2020-08-21 18:04:00,154 INFO L226 Difference]: Without dead ends: 2605 [2020-08-21 18:04:00,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 18:04:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-08-21 18:04:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2205. [2020-08-21 18:04:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-08-21 18:04:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2585 transitions. [2020-08-21 18:04:00,610 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2585 transitions. Word has length 269 [2020-08-21 18:04:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:04:00,611 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 2585 transitions. [2020-08-21 18:04:00,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:04:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2585 transitions. [2020-08-21 18:04:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-21 18:04:00,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:04:00,622 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:04:00,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:04:00,622 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:04:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:04:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash -692797707, now seen corresponding path program 1 times [2020-08-21 18:04:00,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:04:00,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314174801] [2020-08-21 18:04:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:04:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:00,957 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:04:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:04:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:04:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:00,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:04:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:04:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:04:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:04:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:04:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:04:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:04:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:04:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 18:04:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:04:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:04:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:04:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:04:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:04:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 18:04:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:04:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:04:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:04:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:04:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 18:04:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:04:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-21 18:04:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:04:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:04:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:04:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:04:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 18:04:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:04:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-21 18:04:01,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314174801] [2020-08-21 18:04:01,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:04:01,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:04:01,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864757257] [2020-08-21 18:04:01,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:04:01,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:04:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:04:01,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:04:01,287 INFO L87 Difference]: Start difference. First operand 2205 states and 2585 transitions. Second operand 16 states. [2020-08-21 18:04:01,921 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:04:02,277 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:04:02,592 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:04:02,840 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:04:03,462 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:04,474 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:04:04,779 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:05,034 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:05,659 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:06,542 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:06,809 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:04:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:04:07,567 INFO L93 Difference]: Finished difference Result 4208 states and 4993 transitions. [2020-08-21 18:04:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:04:07,568 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-21 18:04:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:04:07,581 INFO L225 Difference]: With dead ends: 4208 [2020-08-21 18:04:07,581 INFO L226 Difference]: Without dead ends: 2229 [2020-08-21 18:04:07,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 18:04:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states.