/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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:05:57,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:05:57,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:05:57,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:05:57,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:05:57,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:05:57,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:05:57,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:05:57,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:05:57,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:05:57,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:05:57,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:05:57,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:05:57,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:05:57,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:05:57,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:05:57,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:05:57,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:05:57,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:05:57,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:05:57,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:05:58,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:05:58,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:05:58,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:05:58,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:05:58,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:05:58,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:05:58,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:05:58,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:05:58,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:05:58,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:05:58,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:05:58,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:05:58,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:05:58,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:05:58,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:05:58,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:05:58,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:05:58,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:05:58,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:05:58,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:05:58,031 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 [2020-09-21 10:05:58,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:05:58,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:05:58,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:05:58,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:05:58,097 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:05:58,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:05:58,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:05:58,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:05:58,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:05:58,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:05:58,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:05:58,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:05:58,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:05:58,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:05:58,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:05:58,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:05:58,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:05:58,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:05:58,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:05:58,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:05:58,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:05:58,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:58,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:05:58,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:05:58,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:05:58,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:05:58,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:05:58,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:05:58,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:05:58,104 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 [2020-09-21 10:05:58,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:05:58,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:05:58,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:05:58,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:05:58,565 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:05:58,566 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-09-21 10:05:58,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6eff1ba0/0dba38f77ea242819064953aac8f271b/FLAG26aeed831 [2020-09-21 10:05:59,297 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:05:59,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-09-21 10:05:59,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6eff1ba0/0dba38f77ea242819064953aac8f271b/FLAG26aeed831 [2020-09-21 10:05:59,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6eff1ba0/0dba38f77ea242819064953aac8f271b [2020-09-21 10:05:59,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:05:59,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:05:59,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:59,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:05:59,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:05:59,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:59" (1/1) ... [2020-09-21 10:05:59,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735898ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:59, skipping insertion in model container [2020-09-21 10:05:59,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:59" (1/1) ... [2020-09-21 10:05:59,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:05:59,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:06:00,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:06:00,024 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:06:00,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:06:00,286 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:06:00,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00 WrapperNode [2020-09-21 10:06:00,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:06:00,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:06:00,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:06:00,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:06:00,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (1/1) ... [2020-09-21 10:06:00,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:06:00,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:06:00,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:06:00,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:06:00,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (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 [2020-09-21 10:06:00,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:06:00,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:06:00,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:06:00,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:06:00,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:06:00,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:06:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:06:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:06:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:06:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:06:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:06:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:06:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:06:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:06:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 10:06:00,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:06:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:06:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:06:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:06:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:06:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:06:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:06:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:06:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:06:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:06:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:06:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:06:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:06:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:06:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:06:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:06:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:06:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:06:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:06:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:06:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:06:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:06:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:06:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:06:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:06:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:06:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:06:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:06:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:06:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:06:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:06:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:06:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:06:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:06:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:06:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:06:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:06:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:06:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:06:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:06:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:06:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:06:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:06:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:06:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:06:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:06:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:06:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:06:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:06:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:06:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:06:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:06:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:06:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:06:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:06:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:06:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:06:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:06:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:06:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:06:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:06:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:06:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:06:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:06:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:06:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:06:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:06:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:06:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 10:06:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:06:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:06:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:06:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:06:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:06:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:06:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:06:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:06:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:06:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:06:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:06:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:06:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:06:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:06:03,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:06:03,792 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:06:03,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:06:03 BoogieIcfgContainer [2020-09-21 10:06:03,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:06:03,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:06:03,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:06:03,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:06:03,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:05:59" (1/3) ... [2020-09-21 10:06:03,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5283043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:06:03, skipping insertion in model container [2020-09-21 10:06:03,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:00" (2/3) ... [2020-09-21 10:06:03,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5283043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:06:03, skipping insertion in model container [2020-09-21 10:06:03,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:06:03" (3/3) ... [2020-09-21 10:06:03,814 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-09-21 10:06:03,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:06:03,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:06:03,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:06:03,897 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:06:03,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:06:03,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:06:03,898 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:06:03,898 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:06:03,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:06:03,899 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:06:03,899 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:06:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-09-21 10:06:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:06:03,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:03,941 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] [2020-09-21 10:06:03,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-09-21 10:06:03,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:03,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496362177] [2020-09-21 10:06:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,675 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:06:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:06:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:04,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496362177] [2020-09-21 10:06:04,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:04,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:06:04,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806632463] [2020-09-21 10:06:04,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:06:04,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:04,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:06:04,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:06:04,862 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-09-21 10:06:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:06,168 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-09-21 10:06:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:06:06,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 10:06:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:06,189 INFO L225 Difference]: With dead ends: 328 [2020-09-21 10:06:06,190 INFO L226 Difference]: Without dead ends: 181 [2020-09-21 10:06:06,196 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 [2020-09-21 10:06:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-21 10:06:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-09-21 10:06:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-21 10:06:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-09-21 10:06:06,313 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-09-21 10:06:06,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:06,314 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-09-21 10:06:06,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:06:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-09-21 10:06:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:06:06,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:06,320 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] [2020-09-21 10:06:06,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:06:06,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:06,321 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-09-21 10:06:06,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:06,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718840391] [2020-09-21 10:06:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,790 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:06,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:06:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:06,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718840391] [2020-09-21 10:06:06,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:06,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:06:06,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031435629] [2020-09-21 10:06:06,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:06:06,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:06,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:06:06,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:06:06,868 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-09-21 10:06:07,395 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:08,390 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-09-21 10:06:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:06:08,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-21 10:06:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:08,400 INFO L225 Difference]: With dead ends: 273 [2020-09-21 10:06:08,400 INFO L226 Difference]: Without dead ends: 171 [2020-09-21 10:06:08,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:06:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-21 10:06:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-09-21 10:06:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-21 10:06:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-09-21 10:06:08,444 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-09-21 10:06:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:08,444 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-09-21 10:06:08,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:06:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-09-21 10:06:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 10:06:08,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:08,447 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] [2020-09-21 10:06:08,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:06:08,448 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-09-21 10:06:08,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:08,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899277809] [2020-09-21 10:06:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,919 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:06:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:06:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:09,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899277809] [2020-09-21 10:06:09,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:09,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:06:09,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102406941] [2020-09-21 10:06:09,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:06:09,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:09,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:06:09,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:06:09,062 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-09-21 10:06:09,621 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:10,046 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:10,357 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:10,651 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:12,195 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-09-21 10:06:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:06:12,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-21 10:06:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:12,199 INFO L225 Difference]: With dead ends: 282 [2020-09-21 10:06:12,199 INFO L226 Difference]: Without dead ends: 171 [2020-09-21 10:06:12,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:06:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-21 10:06:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-09-21 10:06:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-21 10:06:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-09-21 10:06:12,246 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-09-21 10:06:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:12,247 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-09-21 10:06:12,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:06:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-09-21 10:06:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 10:06:12,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:12,250 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] [2020-09-21 10:06:12,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:06:12,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:12,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-09-21 10:06:12,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:12,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382950791] [2020-09-21 10:06:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,645 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:06:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 10:06:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 10:06:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:12,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382950791] [2020-09-21 10:06:12,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:12,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:06:12,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774122992] [2020-09-21 10:06:12,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:06:12,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:06:12,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:06:12,768 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-09-21 10:06:13,282 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:14,700 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:15,651 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-09-21 10:06:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:06:15,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-09-21 10:06:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:15,655 INFO L225 Difference]: With dead ends: 382 [2020-09-21 10:06:15,656 INFO L226 Difference]: Without dead ends: 271 [2020-09-21 10:06:15,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:06:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-21 10:06:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-09-21 10:06:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-21 10:06:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-09-21 10:06:15,717 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-09-21 10:06:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:15,717 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-09-21 10:06:15,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:06:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-09-21 10:06:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:06:15,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:15,720 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] [2020-09-21 10:06:15,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:06:15,720 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-09-21 10:06:15,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:15,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375997823] [2020-09-21 10:06:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,100 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:06:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:06:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:06:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:16,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375997823] [2020-09-21 10:06:16,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:16,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:06:16,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406268142] [2020-09-21 10:06:16,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:06:16,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:16,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:06:16,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:06:16,254 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-09-21 10:06:16,865 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:18,309 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:18,653 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:18,958 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:19,298 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:20,843 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-09-21 10:06:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:06:20,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-09-21 10:06:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:20,855 INFO L225 Difference]: With dead ends: 666 [2020-09-21 10:06:20,855 INFO L226 Difference]: Without dead ends: 469 [2020-09-21 10:06:20,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:06:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-09-21 10:06:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-09-21 10:06:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-09-21 10:06:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-09-21 10:06:20,937 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-09-21 10:06:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:20,938 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-09-21 10:06:20,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:06:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-09-21 10:06:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-21 10:06:20,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:20,941 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] [2020-09-21 10:06:20,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:06:20,942 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-09-21 10:06:20,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:20,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433722684] [2020-09-21 10:06:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,365 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:06:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:06:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:21,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433722684] [2020-09-21 10:06:21,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:21,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:06:21,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51085073] [2020-09-21 10:06:21,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:06:21,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:21,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:06:21,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:06:21,535 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-09-21 10:06:22,174 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:23,517 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:23,796 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:24,120 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:24,465 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:26,004 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-09-21 10:06:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:06:26,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-09-21 10:06:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:26,010 INFO L225 Difference]: With dead ends: 874 [2020-09-21 10:06:26,010 INFO L226 Difference]: Without dead ends: 504 [2020-09-21 10:06:26,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-09-21 10:06:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-09-21 10:06:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-09-21 10:06:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-09-21 10:06:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-09-21 10:06:26,097 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-09-21 10:06:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:26,098 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-09-21 10:06:26,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:06:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-09-21 10:06:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 10:06:26,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:26,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:26,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:06:26,101 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:26,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-09-21 10:06:26,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:26,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686971667] [2020-09-21 10:06:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,388 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:06:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:06:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:26,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686971667] [2020-09-21 10:06:26,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:26,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:06:26,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716959721] [2020-09-21 10:06:26,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:06:26,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:26,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:06:26,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:06:26,622 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-09-21 10:06:27,911 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:28,241 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:06:28,523 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:28,821 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:30,224 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-09-21 10:06:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:06:30,224 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-09-21 10:06:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:30,228 INFO L225 Difference]: With dead ends: 877 [2020-09-21 10:06:30,228 INFO L226 Difference]: Without dead ends: 508 [2020-09-21 10:06:30,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-09-21 10:06:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-09-21 10:06:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-09-21 10:06:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-09-21 10:06:30,302 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-09-21 10:06:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:30,303 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-09-21 10:06:30,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:06:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-09-21 10:06:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 10:06:30,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:30,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:30,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:06:30,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-09-21 10:06:30,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:30,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051679399] [2020-09-21 10:06:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,630 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:06:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:06:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:30,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051679399] [2020-09-21 10:06:30,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:30,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:06:30,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374792568] [2020-09-21 10:06:30,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:06:30,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:06:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:06:30,836 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-09-21 10:06:32,060 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:32,395 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:32,630 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:33,437 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:33,751 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:34,051 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:35,624 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-09-21 10:06:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:06:35,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-09-21 10:06:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:35,629 INFO L225 Difference]: With dead ends: 901 [2020-09-21 10:06:35,629 INFO L226 Difference]: Without dead ends: 522 [2020-09-21 10:06:35,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:06:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-09-21 10:06:35,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-09-21 10:06:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-09-21 10:06:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-09-21 10:06:35,731 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-09-21 10:06:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:35,731 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-09-21 10:06:35,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:06:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-09-21 10:06:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 10:06:35,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:35,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:35,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:06:35,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-09-21 10:06:35,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:35,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592194278] [2020-09-21 10:06:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,058 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:06:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-21 10:06:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:36,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592194278] [2020-09-21 10:06:36,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:36,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:06:36,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004320025] [2020-09-21 10:06:36,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:06:36,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:36,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:06:36,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:06:36,250 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-09-21 10:06:36,841 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:37,494 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:40,243 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-09-21 10:06:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:06:40,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-09-21 10:06:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:40,250 INFO L225 Difference]: With dead ends: 1240 [2020-09-21 10:06:40,250 INFO L226 Difference]: Without dead ends: 853 [2020-09-21 10:06:40,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:06:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-09-21 10:06:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-09-21 10:06:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-09-21 10:06:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-09-21 10:06:40,378 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-09-21 10:06:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:40,379 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-09-21 10:06:40,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:06:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-09-21 10:06:40,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-21 10:06:40,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:40,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:40,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:06:40,384 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-09-21 10:06:40,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:40,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174483781] [2020-09-21 10:06:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,825 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:06:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:06:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:06:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:40,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174483781] [2020-09-21 10:06:40,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:40,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:06:40,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198093392] [2020-09-21 10:06:40,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:06:40,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:40,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:06:40,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:06:40,999 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-09-21 10:06:41,927 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:45,036 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-09-21 10:06:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:06:45,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-09-21 10:06:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:45,047 INFO L225 Difference]: With dead ends: 1414 [2020-09-21 10:06:45,047 INFO L226 Difference]: Without dead ends: 1411 [2020-09-21 10:06:45,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:06:45,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-09-21 10:06:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-09-21 10:06:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-09-21 10:06:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-09-21 10:06:45,311 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-09-21 10:06:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:45,312 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-09-21 10:06:45,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:06:45,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-09-21 10:06:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-21 10:06:45,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:45,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 10:06:45,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:06:45,325 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-09-21 10:06:45,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:45,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525027419] [2020-09-21 10:06:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,742 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:45,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:06:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:06:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-21 10:06:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-21 10:06:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-21 10:06:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-21 10:06:46,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525027419] [2020-09-21 10:06:46,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:46,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 10:06:46,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842072120] [2020-09-21 10:06:46,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 10:06:46,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:46,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 10:06:46,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:06:46,034 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-09-21 10:06:46,744 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:47,059 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:47,350 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:48,504 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:50,704 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-09-21 10:06:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-21 10:06:50,705 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-09-21 10:06:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:50,715 INFO L225 Difference]: With dead ends: 2164 [2020-09-21 10:06:50,715 INFO L226 Difference]: Without dead ends: 1113 [2020-09-21 10:06:50,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-09-21 10:06:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-09-21 10:06:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-09-21 10:06:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-09-21 10:06:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-09-21 10:06:50,899 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-09-21 10:06:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:50,899 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-09-21 10:06:50,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 10:06:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-09-21 10:06:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-21 10:06:50,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:50,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:50,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:06:50,905 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-09-21 10:06:50,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:50,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180694555] [2020-09-21 10:06:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,324 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:51,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:06:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:06:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:06:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 10:06:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:06:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 10:06:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-21 10:06:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-21 10:06:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-21 10:06:51,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180694555] [2020-09-21 10:06:51,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:51,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 10:06:51,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143689933] [2020-09-21 10:06:51,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 10:06:51,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 10:06:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:06:51,754 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-09-21 10:06:52,584 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:52,988 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:53,317 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:53,646 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:54,426 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:55,905 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:56,360 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191