/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:07:32,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:07:32,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:07:32,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:07:32,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:07:32,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:07:32,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:07:32,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:07:32,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:07:32,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:07:32,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:07:32,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:07:32,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:07:32,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:07:32,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:07:32,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:07:32,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:07:32,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:07:32,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:07:32,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:07:32,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:07:32,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:07:32,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:07:32,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:07:32,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:07:32,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:07:32,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:07:32,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:07:32,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:07:32,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:07:32,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:07:32,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:07:32,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:07:32,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:07:32,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:07:32,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:07:32,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:07:32,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:07:32,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:07:32,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:07:32,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:07:32,248 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 13:07:32,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:07:32,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:07:32,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:07:32,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:07:32,297 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:07:32,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:07:32,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:07:32,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:07:32,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:07:32,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:07:32,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:07:32,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:07:32,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:07:32,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:07:32,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:07:32,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:07:32,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:07:32,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:07:32,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:07:32,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:07:32,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:07:32,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:07:32,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:07:32,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:07:32,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:07:32,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:07:32,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:07:32,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:07:32,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:07:32,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:07:32,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:07:32,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:07:32,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:07:32,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:07:32,589 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:07:32,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2020-08-21 13:07:32,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d6cebb4/bc2badd59d17485a94ec23ef0d23228e/FLAG91911bbfe [2020-08-21 13:07:33,219 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:07:33,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2020-08-21 13:07:33,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d6cebb4/bc2badd59d17485a94ec23ef0d23228e/FLAG91911bbfe [2020-08-21 13:07:33,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d6cebb4/bc2badd59d17485a94ec23ef0d23228e [2020-08-21 13:07:33,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:07:33,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:07:33,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:07:33,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:07:33,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:07:33,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:07:33" (1/1) ... [2020-08-21 13:07:33,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47163c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:33, skipping insertion in model container [2020-08-21 13:07:33,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:07:33" (1/1) ... [2020-08-21 13:07:33,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:07:33,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:07:33,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:07:33,971 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:07:34,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:07:34,123 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:07:34,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34 WrapperNode [2020-08-21 13:07:34,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:07:34,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:07:34,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:07:34,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:07:34,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (1/1) ... [2020-08-21 13:07:34,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:07:34,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:07:34,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:07:34,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:07:34,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (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 13:07:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:07:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:07:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:07:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:07:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:07:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:07:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:07:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:07:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:07:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:07:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:07:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:07:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:07:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:07:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:07:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:07:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:07:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:07:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:07:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:07:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:07:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:07:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:07:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:07:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:07:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:07:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:07:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:07:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:07:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:07:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:07:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:07:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:07:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:07:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:07:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:07:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:07:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:07:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:07:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:07:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:07:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:07:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:07:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:07:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:07:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:07:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:07:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:07:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:07:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:07:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:07:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:07:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:07:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:07:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:07:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:07:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:07:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:07:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:07:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:07:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:07:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:07:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:07:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:07:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:07:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:07:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:07:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:07:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:07:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:07:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:07:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:07:35,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:07:35,307 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:07:35,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:07:35 BoogieIcfgContainer [2020-08-21 13:07:35,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:07:35,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:07:35,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:07:35,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:07:35,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:07:33" (1/3) ... [2020-08-21 13:07:35,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cce9add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:07:35, skipping insertion in model container [2020-08-21 13:07:35,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:07:34" (2/3) ... [2020-08-21 13:07:35,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cce9add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:07:35, skipping insertion in model container [2020-08-21 13:07:35,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:07:35" (3/3) ... [2020-08-21 13:07:35,322 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2020-08-21 13:07:35,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:07:35,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:07:35,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:07:35,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:07:35,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:07:35,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:07:35,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:07:35,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:07:35,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:07:35,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:07:35,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:07:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-21 13:07:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:07:35,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:35,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:35,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash -154299971, now seen corresponding path program 1 times [2020-08-21 13:07:35,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:35,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250013061] [2020-08-21 13:07:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,096 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:07:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:07:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:36,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250013061] [2020-08-21 13:07:36,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:36,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:07:36,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177981213] [2020-08-21 13:07:36,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:07:36,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:07:36,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:07:36,243 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-21 13:07:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:37,445 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-21 13:07:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:07:37,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 13:07:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:37,463 INFO L225 Difference]: With dead ends: 296 [2020-08-21 13:07:37,463 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 13:07:37,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:07:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 13:07:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 133. [2020-08-21 13:07:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 13:07:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-21 13:07:37,569 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 51 [2020-08-21 13:07:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:37,570 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-21 13:07:37,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:07:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-21 13:07:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:07:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:37,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:37,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:07:37,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:37,576 INFO L82 PathProgramCache]: Analyzing trace with hash 401693438, now seen corresponding path program 1 times [2020-08-21 13:07:37,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:37,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169584694] [2020-08-21 13:07:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,915 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:37,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:07:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:37,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169584694] [2020-08-21 13:07:37,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:37,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:07:37,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844786874] [2020-08-21 13:07:37,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:07:37,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:37,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:07:37,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:07:37,968 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 5 states. [2020-08-21 13:07:38,490 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:39,254 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2020-08-21 13:07:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:07:39,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 13:07:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:39,258 INFO L225 Difference]: With dead ends: 241 [2020-08-21 13:07:39,258 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 13:07:39,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:07:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 13:07:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-08-21 13:07:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 13:07:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-21 13:07:39,318 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-21 13:07:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:39,319 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-21 13:07:39,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:07:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-21 13:07:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 13:07:39,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:39,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:39,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:07:39,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1332267464, now seen corresponding path program 1 times [2020-08-21 13:07:39,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:39,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004354167] [2020-08-21 13:07:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,651 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:07:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:07:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:39,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004354167] [2020-08-21 13:07:39,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:39,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:07:39,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739238216] [2020-08-21 13:07:39,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:07:39,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:39,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:07:39,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:07:39,735 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 9 states. [2020-08-21 13:07:40,128 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:40,465 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:40,724 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:40,970 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:42,225 INFO L93 Difference]: Finished difference Result 250 states and 311 transitions. [2020-08-21 13:07:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:07:42,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 13:07:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:42,229 INFO L225 Difference]: With dead ends: 250 [2020-08-21 13:07:42,229 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 13:07:42,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:07:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 13:07:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-08-21 13:07:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 13:07:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-21 13:07:42,269 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 56 [2020-08-21 13:07:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:42,270 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-21 13:07:42,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:07:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-21 13:07:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 13:07:42,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:42,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:42,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:07:42,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:42,273 INFO L82 PathProgramCache]: Analyzing trace with hash -877153324, now seen corresponding path program 1 times [2020-08-21 13:07:42,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:42,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577052074] [2020-08-21 13:07:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,622 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:07:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 13:07:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 13:07:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:42,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577052074] [2020-08-21 13:07:42,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:42,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:07:42,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315231692] [2020-08-21 13:07:42,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:07:42,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:42,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:07:42,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:07:42,753 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 7 states. [2020-08-21 13:07:43,122 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:44,362 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:45,073 INFO L93 Difference]: Finished difference Result 344 states and 433 transitions. [2020-08-21 13:07:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:07:45,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-21 13:07:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:45,077 INFO L225 Difference]: With dead ends: 344 [2020-08-21 13:07:45,077 INFO L226 Difference]: Without dead ends: 248 [2020-08-21 13:07:45,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:07:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-21 13:07:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2020-08-21 13:07:45,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-21 13:07:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-21 13:07:45,125 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 69 [2020-08-21 13:07:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:45,126 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-21 13:07:45,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:07:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-21 13:07:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 13:07:45,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:45,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:45,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:07:45,128 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:45,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1061705923, now seen corresponding path program 1 times [2020-08-21 13:07:45,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:45,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949357341] [2020-08-21 13:07:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,415 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:07:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 13:07:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:07:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:45,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949357341] [2020-08-21 13:07:45,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:45,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:07:45,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659960338] [2020-08-21 13:07:45,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:07:45,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:45,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:07:45,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:07:45,536 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 9 states. [2020-08-21 13:07:45,883 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:47,164 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:47,438 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:47,686 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:47,965 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:48,930 INFO L93 Difference]: Finished difference Result 597 states and 752 transitions. [2020-08-21 13:07:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:07:48,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 13:07:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:48,934 INFO L225 Difference]: With dead ends: 597 [2020-08-21 13:07:48,934 INFO L226 Difference]: Without dead ends: 423 [2020-08-21 13:07:48,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 13:07:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-21 13:07:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 352. [2020-08-21 13:07:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-21 13:07:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 404 transitions. [2020-08-21 13:07:49,029 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 404 transitions. Word has length 83 [2020-08-21 13:07:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:49,029 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 404 transitions. [2020-08-21 13:07:49,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:07:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 404 transitions. [2020-08-21 13:07:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 13:07:49,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:49,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:49,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:07:49,032 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1506381919, now seen corresponding path program 1 times [2020-08-21 13:07:49,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:49,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924378880] [2020-08-21 13:07:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,318 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 13:07:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 13:07:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:49,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924378880] [2020-08-21 13:07:49,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:49,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:07:49,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000485829] [2020-08-21 13:07:49,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:07:49,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:07:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:07:49,506 INFO L87 Difference]: Start difference. First operand 352 states and 404 transitions. Second operand 10 states. [2020-08-21 13:07:49,911 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:51,030 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:51,269 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:07:51,557 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:51,858 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:52,983 INFO L93 Difference]: Finished difference Result 782 states and 967 transitions. [2020-08-21 13:07:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:07:52,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-21 13:07:52,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:52,988 INFO L225 Difference]: With dead ends: 782 [2020-08-21 13:07:52,988 INFO L226 Difference]: Without dead ends: 458 [2020-08-21 13:07:52,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:07:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-08-21 13:07:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 351. [2020-08-21 13:07:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-21 13:07:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-21 13:07:53,083 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 87 [2020-08-21 13:07:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:53,083 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-21 13:07:53,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:07:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-21 13:07:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:07:53,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:53,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:53,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:07:53,085 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:53,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:53,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1049604760, now seen corresponding path program 1 times [2020-08-21 13:07:53,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:53,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696572840] [2020-08-21 13:07:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,317 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:53,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:07:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:07:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:53,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696572840] [2020-08-21 13:07:53,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:53,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:07:53,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683145362] [2020-08-21 13:07:53,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:07:53,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:53,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:07:53,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:07:53,522 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 10 states. [2020-08-21 13:07:54,443 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:07:54,683 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:07:54,927 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:55,189 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:07:56,055 INFO L93 Difference]: Finished difference Result 785 states and 976 transitions. [2020-08-21 13:07:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:07:56,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 13:07:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:07:56,063 INFO L225 Difference]: With dead ends: 785 [2020-08-21 13:07:56,063 INFO L226 Difference]: Without dead ends: 462 [2020-08-21 13:07:56,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:07:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-21 13:07:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 361. [2020-08-21 13:07:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 13:07:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 411 transitions. [2020-08-21 13:07:56,183 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 411 transitions. Word has length 88 [2020-08-21 13:07:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:07:56,184 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 411 transitions. [2020-08-21 13:07:56,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:07:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 411 transitions. [2020-08-21 13:07:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:07:56,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:07:56,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:07:56,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:07:56,188 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:07:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:07:56,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1751204634, now seen corresponding path program 1 times [2020-08-21 13:07:56,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:07:56,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133812119] [2020-08-21 13:07:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:07:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,451 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:07:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:07:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:07:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:07:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:07:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:07:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:07:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:07:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:07:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:07:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:07:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:07:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:07:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:07:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:07:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:07:56,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133812119] [2020-08-21 13:07:56,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:07:56,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:07:56,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701146075] [2020-08-21 13:07:56,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:07:56,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:07:56,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:07:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:07:56,599 INFO L87 Difference]: Start difference. First operand 361 states and 411 transitions. Second operand 12 states. [2020-08-21 13:07:57,280 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:57,519 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:57,752 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:58,392 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:58,648 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:07:58,895 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:00,047 INFO L93 Difference]: Finished difference Result 809 states and 1018 transitions. [2020-08-21 13:08:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:08:00,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-21 13:08:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:00,051 INFO L225 Difference]: With dead ends: 809 [2020-08-21 13:08:00,051 INFO L226 Difference]: Without dead ends: 476 [2020-08-21 13:08:00,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:08:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-21 13:08:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-21 13:08:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-21 13:08:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 419 transitions. [2020-08-21 13:08:00,122 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 419 transitions. Word has length 88 [2020-08-21 13:08:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:00,123 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 419 transitions. [2020-08-21 13:08:00,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:08:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 419 transitions. [2020-08-21 13:08:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:08:00,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:08:00,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:08:00,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:08:00,125 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:08:00,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:08:00,125 INFO L82 PathProgramCache]: Analyzing trace with hash -818281765, now seen corresponding path program 1 times [2020-08-21 13:08:00,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:08:00,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672834728] [2020-08-21 13:08:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:08:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,458 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:08:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:08:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:08:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:08:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:08:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:08:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:08:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:08:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:08:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:08:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:08:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:08:00,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672834728] [2020-08-21 13:08:00,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:08:00,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:08:00,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542262100] [2020-08-21 13:08:00,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:08:00,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:08:00,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:08:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:08:00,662 INFO L87 Difference]: Start difference. First operand 369 states and 419 transitions. Second operand 8 states. [2020-08-21 13:08:01,165 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:01,695 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:03,849 INFO L93 Difference]: Finished difference Result 1128 states and 1469 transitions. [2020-08-21 13:08:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:08:03,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-21 13:08:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:03,856 INFO L225 Difference]: With dead ends: 1128 [2020-08-21 13:08:03,857 INFO L226 Difference]: Without dead ends: 787 [2020-08-21 13:08:03,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-21 13:08:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-21 13:08:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 655. [2020-08-21 13:08:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-21 13:08:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 773 transitions. [2020-08-21 13:08:03,994 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 773 transitions. Word has length 88 [2020-08-21 13:08:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:03,996 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 773 transitions. [2020-08-21 13:08:03,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:08:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 773 transitions. [2020-08-21 13:08:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 13:08:03,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:08:03,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:08:03,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:08:03,999 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:08:03,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:08:03,999 INFO L82 PathProgramCache]: Analyzing trace with hash -470187979, now seen corresponding path program 1 times [2020-08-21 13:08:03,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:08:04,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745038704] [2020-08-21 13:08:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:08:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,273 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:08:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:08:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:08:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:08:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:08:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:08:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:08:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:08:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:08:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:08:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 13:08:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 13:08:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:08:04,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745038704] [2020-08-21 13:08:04,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:08:04,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:08:04,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666338399] [2020-08-21 13:08:04,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:08:04,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:08:04,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:08:04,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:08:04,364 INFO L87 Difference]: Start difference. First operand 655 states and 773 transitions. Second operand 8 states. [2020-08-21 13:08:04,803 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:06,933 INFO L93 Difference]: Finished difference Result 1292 states and 1674 transitions. [2020-08-21 13:08:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:08:06,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-21 13:08:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:06,941 INFO L225 Difference]: With dead ends: 1292 [2020-08-21 13:08:06,941 INFO L226 Difference]: Without dead ends: 1289 [2020-08-21 13:08:06,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:08:06,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-08-21 13:08:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1091. [2020-08-21 13:08:07,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-08-21 13:08:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1300 transitions. [2020-08-21 13:08:07,190 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1300 transitions. Word has length 92 [2020-08-21 13:08:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:07,191 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1300 transitions. [2020-08-21 13:08:07,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:08:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1300 transitions. [2020-08-21 13:08:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 13:08:07,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:08:07,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:07,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:08:07,200 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:08:07,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:08:07,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1507801122, now seen corresponding path program 1 times [2020-08-21 13:08:07,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:08:07,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024327846] [2020-08-21 13:08:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:08:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,584 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:08:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:08:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:08:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:08:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:08:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:08:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:08:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:08:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:08:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:08:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:08:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:08:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 13:08:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 13:08:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 13:08:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 13:08:07,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024327846] [2020-08-21 13:08:07,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:08:07,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:08:07,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407548624] [2020-08-21 13:08:07,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:08:07,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:08:07,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:08:07,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:08:07,813 INFO L87 Difference]: Start difference. First operand 1091 states and 1300 transitions. Second operand 13 states. [2020-08-21 13:08:08,529 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:08,747 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:08,964 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:09,795 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:11,050 INFO L93 Difference]: Finished difference Result 1954 states and 2438 transitions. [2020-08-21 13:08:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 13:08:11,050 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-21 13:08:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:11,058 INFO L225 Difference]: With dead ends: 1954 [2020-08-21 13:08:11,058 INFO L226 Difference]: Without dead ends: 1015 [2020-08-21 13:08:11,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:08:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-21 13:08:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 892. [2020-08-21 13:08:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-08-21 13:08:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1050 transitions. [2020-08-21 13:08:11,220 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1050 transitions. Word has length 150 [2020-08-21 13:08:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:11,221 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1050 transitions. [2020-08-21 13:08:11,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:08:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1050 transitions. [2020-08-21 13:08:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 13:08:11,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:08:11,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:11,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:08:11,226 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:08:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:08:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1309638405, now seen corresponding path program 1 times [2020-08-21 13:08:11,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:08:11,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011147410] [2020-08-21 13:08:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:08:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,594 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:08:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:08:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:08:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:08:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:08:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:08:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:08:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:08:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:08:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:08:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:08:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:08:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 13:08:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:08:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:08:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 13:08:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 13:08:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-21 13:08:12,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011147410] [2020-08-21 13:08:12,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:08:12,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:08:12,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541948682] [2020-08-21 13:08:12,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:08:12,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:08:12,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:08:12,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:08:12,044 INFO L87 Difference]: Start difference. First operand 892 states and 1050 transitions. Second operand 15 states. [2020-08-21 13:08:12,826 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:13,734 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:15,703 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-21 13:08:16,204 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 13:08:16,637 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 13:08:17,529 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 13:08:17,799 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:08:18,038 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:08:18,276 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:08:20,045 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-21 13:08:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:20,890 INFO L93 Difference]: Finished difference Result 2848 states and 3670 transitions. [2020-08-21 13:08:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-21 13:08:20,895 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-08-21 13:08:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:20,907 INFO L225 Difference]: With dead ends: 2848 [2020-08-21 13:08:20,908 INFO L226 Difference]: Without dead ends: 2108 [2020-08-21 13:08:20,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=754, Invalid=3028, Unknown=0, NotChecked=0, Total=3782 [2020-08-21 13:08:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2020-08-21 13:08:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1816. [2020-08-21 13:08:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-08-21 13:08:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2157 transitions. [2020-08-21 13:08:21,290 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2157 transitions. Word has length 152 [2020-08-21 13:08:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:21,290 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2157 transitions. [2020-08-21 13:08:21,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:08:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2157 transitions. [2020-08-21 13:08:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 13:08:21,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:08:21,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:21,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:08:21,295 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:08:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:08:21,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1237251847, now seen corresponding path program 1 times [2020-08-21 13:08:21,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:08:21,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350782056] [2020-08-21 13:08:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:08:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,606 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:08:21,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:08:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:08:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:08:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:08:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:08:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:08:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:08:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:08:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:08:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:08:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:08:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:08:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 13:08:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:08:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:08:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:08:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:08:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 13:08:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 13:08:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:08:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 13:08:21,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350782056] [2020-08-21 13:08:21,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:08:21,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:08:21,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103837984] [2020-08-21 13:08:21,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:08:21,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:08:21,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:08:21,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:08:21,854 INFO L87 Difference]: Start difference. First operand 1816 states and 2157 transitions. Second operand 15 states. [2020-08-21 13:08:22,566 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:22,821 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:23,069 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:24,573 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:08:24,800 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:08:25,043 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:08:25,291 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:08:25,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:08:25,546 INFO L93 Difference]: Finished difference Result 2571 states and 3119 transitions. [2020-08-21 13:08:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:08:25,546 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-08-21 13:08:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:08:25,548 INFO L225 Difference]: With dead ends: 2571 [2020-08-21 13:08:25,548 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:08:25,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-08-21 13:08:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:08:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:08:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:08:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:08:25,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-21 13:08:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:08:25,559 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:08:25,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:08:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:08:25,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:08:25,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 13:08:25,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 13:08:26,507 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-08-21 13:08:29,125 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 343 DAG size of output: 302