/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:48:42,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:48:42,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:48:42,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:48:42,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:48:42,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:48:42,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:48:42,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:48:42,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:48:42,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:48:42,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:48:42,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:48:42,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:48:42,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:48:42,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:48:42,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:48:42,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:48:42,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:48:42,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:48:42,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:48:42,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:48:42,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:48:42,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:48:42,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:48:42,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:48:42,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:48:42,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:48:42,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:48:42,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:48:42,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:48:42,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:48:42,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:48:42,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:48:42,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:48:42,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:48:42,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:48:42,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:48:42,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:48:42,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:48:42,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:48:42,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:48:42,573 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 [2020-09-24 14:48:42,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:48:42,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:48:42,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:48:42,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:48:42,601 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:48:42,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:48:42,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:48:42,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:48:42,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:48:42,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:48:42,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:48:42,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:48:42,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:48:42,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:48:42,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:48:42,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:48:42,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:48:42,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:48:42,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:48:42,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:48:42,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:48:42,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:48:42,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:48:42,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:48:42,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:48:42,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:48:42,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:48:42,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:48:42,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:48:42,606 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:48:43,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:48:43,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:48:43,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:48:43,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:48:43,129 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:48:43,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-09-24 14:48:43,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e095391f2/6154519078a04d6b89ebcdf570b614a8/FLAGad9f4c13e [2020-09-24 14:48:43,857 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:48:43,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-09-24 14:48:43,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e095391f2/6154519078a04d6b89ebcdf570b614a8/FLAGad9f4c13e [2020-09-24 14:48:44,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e095391f2/6154519078a04d6b89ebcdf570b614a8 [2020-09-24 14:48:44,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:48:44,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:48:44,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:48:44,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:48:44,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:48:44,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44, skipping insertion in model container [2020-09-24 14:48:44,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:48:44,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:48:44,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:48:44,580 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:48:44,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:48:44,812 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:48:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44 WrapperNode [2020-09-24 14:48:44,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:48:44,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:48:44,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:48:44,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:48:44,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (1/1) ... [2020-09-24 14:48:44,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:48:44,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:48:44,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:48:44,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:48:44,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (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 [2020-09-24 14:48:45,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:48:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:48:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:48:45,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:48:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:48:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:48:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:48:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:48:45,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:48:45,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 14:48:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:48:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:48:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:48:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:48:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:48:45,038 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:48:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:48:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:48:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 14:48:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:48:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:48:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:48:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:48:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:48:45,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:48:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:48:45,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:48:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:48:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:48:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 14:48:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 14:48:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:48:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 14:48:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:48:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:48:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:48:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:48:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:48:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:48:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 14:48:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 14:48:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:48:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:48:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:48:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:48:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:48:45,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:48:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:48:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:48:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:48:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:48:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:48:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:48:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:48:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:48:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:48:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:48:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:48:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:48:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:48:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:48:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:48:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:48:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:48:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:48:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 14:48:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:48:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:48:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:48:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:48:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:48:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:48:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 14:48:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:48:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:48:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:48:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:48:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:48:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:48:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:48:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:48:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 14:48:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:48:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 14:48:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:48:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 14:48:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 14:48:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 14:48:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:48:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:48:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:48:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:48:46,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:48:46,354 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:48:46,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:48:46 BoogieIcfgContainer [2020-09-24 14:48:46,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:48:46,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:48:46,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:48:46,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:48:46,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:48:44" (1/3) ... [2020-09-24 14:48:46,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a847a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:48:46, skipping insertion in model container [2020-09-24 14:48:46,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:48:44" (2/3) ... [2020-09-24 14:48:46,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a847a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:48:46, skipping insertion in model container [2020-09-24 14:48:46,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:48:46" (3/3) ... [2020-09-24 14:48:46,371 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-09-24 14:48:46,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:48:46,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:48:46,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:48:46,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:48:46,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:48:46,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:48:46,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:48:46,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:48:46,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:48:46,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:48:46,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:48:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-09-24 14:48:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 14:48:46,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:48:46,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:48:46,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:48:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:48:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1259360700, now seen corresponding path program 1 times [2020-09-24 14:48:46,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:48:46,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396084430] [2020-09-24 14:48:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:48:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,345 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:48:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:48:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:48:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:48:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:48:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:48:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 14:48:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:48:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:48:47,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396084430] [2020-09-24 14:48:47,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:48:47,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:48:47,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788083937] [2020-09-24 14:48:47,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:48:47,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:48:47,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:48:47,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:48:47,599 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 3 states. [2020-09-24 14:48:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:48:49,053 INFO L93 Difference]: Finished difference Result 544 states and 638 transitions. [2020-09-24 14:48:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:48:49,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 14:48:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:48:49,077 INFO L225 Difference]: With dead ends: 544 [2020-09-24 14:48:49,077 INFO L226 Difference]: Without dead ends: 331 [2020-09-24 14:48:49,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:48:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-09-24 14:48:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 287. [2020-09-24 14:48:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-09-24 14:48:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 310 transitions. [2020-09-24 14:48:49,214 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 310 transitions. Word has length 142 [2020-09-24 14:48:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:48:49,215 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 310 transitions. [2020-09-24 14:48:49,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:48:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 310 transitions. [2020-09-24 14:48:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 14:48:49,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:48:49,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:48:49,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:48:49,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:48:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:48:49,222 INFO L82 PathProgramCache]: Analyzing trace with hash -167797662, now seen corresponding path program 1 times [2020-09-24 14:48:49,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:48:49,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404307398] [2020-09-24 14:48:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:48:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,728 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:48:49,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:48:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:48:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:48:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:48:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:48:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:48:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 14:48:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:48:49,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404307398] [2020-09-24 14:48:49,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:48:49,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:48:49,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913944583] [2020-09-24 14:48:49,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:48:49,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:48:49,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:48:49,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:48:49,902 INFO L87 Difference]: Start difference. First operand 287 states and 310 transitions. Second operand 4 states. [2020-09-24 14:48:50,577 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:48:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:48:51,795 INFO L93 Difference]: Finished difference Result 457 states and 509 transitions. [2020-09-24 14:48:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:48:51,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 14:48:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:48:51,801 INFO L225 Difference]: With dead ends: 457 [2020-09-24 14:48:51,801 INFO L226 Difference]: Without dead ends: 314 [2020-09-24 14:48:51,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:48:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-24 14:48:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 277. [2020-09-24 14:48:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-24 14:48:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 297 transitions. [2020-09-24 14:48:51,882 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 297 transitions. Word has length 143 [2020-09-24 14:48:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:48:51,885 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 297 transitions. [2020-09-24 14:48:51,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:48:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 297 transitions. [2020-09-24 14:48:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 14:48:51,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:48:51,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:48:51,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:48:51,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:48:51,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:48:51,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1124813631, now seen corresponding path program 1 times [2020-09-24 14:48:51,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:48:51,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968094103] [2020-09-24 14:48:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:48:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,231 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:48:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:48:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:48:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:48:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:48:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:48:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 14:48:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:48:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:48:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:48:52,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968094103] [2020-09-24 14:48:52,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:48:52,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:48:52,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052329526] [2020-09-24 14:48:52,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:48:52,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:48:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:48:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:48:52,371 INFO L87 Difference]: Start difference. First operand 277 states and 297 transitions. Second operand 10 states. [2020-09-24 14:48:53,078 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 14:48:53,545 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:48:53,920 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:48:54,288 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:48:54,694 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:48:55,038 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:48:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:48:56,868 INFO L93 Difference]: Finished difference Result 503 states and 571 transitions. [2020-09-24 14:48:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 14:48:56,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-24 14:48:56,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:48:56,872 INFO L225 Difference]: With dead ends: 503 [2020-09-24 14:48:56,872 INFO L226 Difference]: Without dead ends: 336 [2020-09-24 14:48:56,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:48:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-09-24 14:48:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 277. [2020-09-24 14:48:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-24 14:48:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 296 transitions. [2020-09-24 14:48:56,924 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 296 transitions. Word has length 156 [2020-09-24 14:48:56,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:48:56,925 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 296 transitions. [2020-09-24 14:48:56,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:48:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 296 transitions. [2020-09-24 14:48:56,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 14:48:56,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:48:56,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:48:56,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:48:56,928 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:48:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:48:56,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1772447234, now seen corresponding path program 1 times [2020-09-24 14:48:56,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:48:56,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144405172] [2020-09-24 14:48:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:48:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,308 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:48:57,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:48:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:48:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:48:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:48:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:48:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 14:48:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 14:48:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:48:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:48:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 14:48:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 14:48:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:48:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:48:57,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144405172] [2020-09-24 14:48:57,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:48:57,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:48:57,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855987470] [2020-09-24 14:48:57,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:48:57,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:48:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:48:57,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:48:57,542 INFO L87 Difference]: Start difference. First operand 277 states and 296 transitions. Second operand 7 states. [2020-09-24 14:48:58,086 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 14:48:59,763 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:49:00,749 INFO L93 Difference]: Finished difference Result 683 states and 801 transitions. [2020-09-24 14:49:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 14:49:00,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-24 14:49:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:49:00,755 INFO L225 Difference]: With dead ends: 683 [2020-09-24 14:49:00,755 INFO L226 Difference]: Without dead ends: 516 [2020-09-24 14:49:00,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:49:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-09-24 14:49:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 389. [2020-09-24 14:49:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-09-24 14:49:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 417 transitions. [2020-09-24 14:49:00,815 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 417 transitions. Word has length 169 [2020-09-24 14:49:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:49:00,816 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 417 transitions. [2020-09-24 14:49:00,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:49:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 417 transitions. [2020-09-24 14:49:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 14:49:00,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:49:00,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:49:00,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:49:00,819 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:49:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:49:00,820 INFO L82 PathProgramCache]: Analyzing trace with hash 184026520, now seen corresponding path program 1 times [2020-09-24 14:49:00,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:49:00,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324252275] [2020-09-24 14:49:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:49:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,176 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:49:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:49:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:49:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:49:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:49:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:49:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 14:49:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 14:49:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:49:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:49:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:49:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:49:01,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324252275] [2020-09-24 14:49:01,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:49:01,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:49:01,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784210034] [2020-09-24 14:49:01,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:49:01,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:49:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:49:01,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:49:01,456 INFO L87 Difference]: Start difference. First operand 389 states and 417 transitions. Second operand 13 states. [2020-09-24 14:49:02,118 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:02,391 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:49:02,685 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:03,004 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:03,288 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:04,210 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:04,503 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:04,810 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:05,137 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:05,443 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:49:07,223 INFO L93 Difference]: Finished difference Result 800 states and 932 transitions. [2020-09-24 14:49:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:49:07,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2020-09-24 14:49:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:49:07,228 INFO L225 Difference]: With dead ends: 800 [2020-09-24 14:49:07,228 INFO L226 Difference]: Without dead ends: 521 [2020-09-24 14:49:07,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-24 14:49:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-09-24 14:49:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 395. [2020-09-24 14:49:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-24 14:49:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 423 transitions. [2020-09-24 14:49:07,280 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 423 transitions. Word has length 193 [2020-09-24 14:49:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:49:07,280 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 423 transitions. [2020-09-24 14:49:07,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:49:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 423 transitions. [2020-09-24 14:49:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 14:49:07,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:49:07,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:49:07,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:49:07,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:49:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:49:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1323820344, now seen corresponding path program 1 times [2020-09-24 14:49:07,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:49:07,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265972356] [2020-09-24 14:49:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:49:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,716 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:49:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:49:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:49:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:49:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:49:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:49:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 14:49:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 14:49:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:49:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:49:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:49:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:49:07,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265972356] [2020-09-24 14:49:07,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:49:07,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 14:49:07,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780148895] [2020-09-24 14:49:07,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 14:49:07,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:49:07,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 14:49:07,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:49:07,971 INFO L87 Difference]: Start difference. First operand 395 states and 423 transitions. Second operand 15 states. [2020-09-24 14:49:08,529 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 14:49:08,959 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:09,274 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:49:09,590 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:09,924 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:49:10,221 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:10,939 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:12,315 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:12,650 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:49:13,038 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:49:13,379 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:13,711 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:49:14,039 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:49:14,353 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:49:14,729 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:49:15,157 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:49:15,468 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:49:17,611 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 14:49:17,950 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:18,520 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:49:19,792 INFO L93 Difference]: Finished difference Result 1398 states and 1733 transitions. [2020-09-24 14:49:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 14:49:19,794 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 193 [2020-09-24 14:49:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:49:19,803 INFO L225 Difference]: With dead ends: 1398 [2020-09-24 14:49:19,803 INFO L226 Difference]: Without dead ends: 1113 [2020-09-24 14:49:19,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 14:49:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-09-24 14:49:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 814. [2020-09-24 14:49:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-09-24 14:49:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 896 transitions. [2020-09-24 14:49:19,943 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 896 transitions. Word has length 193 [2020-09-24 14:49:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:49:19,944 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 896 transitions. [2020-09-24 14:49:19,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 14:49:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 896 transitions. [2020-09-24 14:49:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-09-24 14:49:19,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:49:19,955 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:49:19,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:49:19,955 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:49:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:49:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1622422534, now seen corresponding path program 1 times [2020-09-24 14:49:19,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:49:19,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388665343] [2020-09-24 14:49:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:49:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,373 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:49:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:49:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:49:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:49:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:49:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:49:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 14:49:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:49:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 14:49:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:49:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 14:49:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-24 14:49:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-24 14:49:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-24 14:49:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:49:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-24 14:49:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-24 14:49:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 14:49:20,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388665343] [2020-09-24 14:49:20,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:49:20,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 14:49:20,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433405516] [2020-09-24 14:49:20,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:49:20,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:49:20,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:49:20,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:49:20,789 INFO L87 Difference]: Start difference. First operand 814 states and 896 transitions. Second operand 12 states. [2020-09-24 14:49:21,628 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-24 14:49:22,422 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 14:49:25,192 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-24 14:49:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:49:28,149 INFO L93 Difference]: Finished difference Result 1746 states and 2111 transitions. [2020-09-24 14:49:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 14:49:28,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 278 [2020-09-24 14:49:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:49:28,158 INFO L225 Difference]: With dead ends: 1746 [2020-09-24 14:49:28,158 INFO L226 Difference]: Without dead ends: 1218 [2020-09-24 14:49:28,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=301, Invalid=1181, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 14:49:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-09-24 14:49:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 928. [2020-09-24 14:49:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-09-24 14:49:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1041 transitions. [2020-09-24 14:49:28,283 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1041 transitions. Word has length 278 [2020-09-24 14:49:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:49:28,284 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1041 transitions. [2020-09-24 14:49:28,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:49:28,284 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1041 transitions. [2020-09-24 14:49:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-24 14:49:28,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:49:28,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:49:28,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:49:28,291 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:49:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:49:28,291 INFO L82 PathProgramCache]: Analyzing trace with hash -457347466, now seen corresponding path program 1 times [2020-09-24 14:49:28,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:49:28,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175327640] [2020-09-24 14:49:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:49:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,613 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:49:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:49:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:49:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:49:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:49:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:49:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 14:49:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 14:49:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:49:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:49:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:49:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:49:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 14:49:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-24 14:49:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-24 14:49:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-24 14:49:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:49:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-09-24 14:49:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-09-24 14:49:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 14:49:29,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175327640] [2020-09-24 14:49:29,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:49:29,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 14:49:29,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621767870] [2020-09-24 14:49:29,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:49:29,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:49:29,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:49:29,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:49:29,005 INFO L87 Difference]: Start difference. First operand 928 states and 1041 transitions. Second operand 12 states. [2020-09-24 14:49:30,363 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 14:49:30,675 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:49:31,004 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:49:31,317 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:31,652 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:31,947 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:49:33,520 INFO L93 Difference]: Finished difference Result 1831 states and 2202 transitions. [2020-09-24 14:49:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:49:33,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 291 [2020-09-24 14:49:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:49:33,526 INFO L225 Difference]: With dead ends: 1831 [2020-09-24 14:49:33,527 INFO L226 Difference]: Without dead ends: 1013 [2020-09-24 14:49:33,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:49:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-09-24 14:49:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 791. [2020-09-24 14:49:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-09-24 14:49:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 883 transitions. [2020-09-24 14:49:33,652 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 883 transitions. Word has length 291 [2020-09-24 14:49:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:49:33,653 INFO L479 AbstractCegarLoop]: Abstraction has 791 states and 883 transitions. [2020-09-24 14:49:33,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:49:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 883 transitions. [2020-09-24 14:49:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-24 14:49:33,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:49:33,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:49:33,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:49:33,657 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:49:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:49:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1228875784, now seen corresponding path program 1 times [2020-09-24 14:49:33,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:49:33,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534399844] [2020-09-24 14:49:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:49:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,007 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:49:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:49:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 14:49:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 14:49:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 14:49:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 14:49:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 14:49:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:49:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 14:49:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:49:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:49:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:49:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:49:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 14:49:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 14:49:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-24 14:49:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-09-24 14:49:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:49:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:49:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:49:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-09-24 14:49:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-24 14:49:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 14:49:34,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534399844] [2020-09-24 14:49:34,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:49:34,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 14:49:34,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846872333] [2020-09-24 14:49:34,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:49:34,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:49:34,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:49:34,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:49:34,326 INFO L87 Difference]: Start difference. First operand 791 states and 883 transitions. Second operand 12 states. [2020-09-24 14:49:36,744 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:37,040 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:37,361 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:49:37,670 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:37,983 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:49:38,276 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:49:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:49:38,867 INFO L93 Difference]: Finished difference Result 1618 states and 1912 transitions. [2020-09-24 14:49:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:49:38,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 296 [2020-09-24 14:49:38,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:49:38,873 INFO L225 Difference]: With dead ends: 1618 [2020-09-24 14:49:38,873 INFO L226 Difference]: Without dead ends: 1027 [2020-09-24 14:49:38,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:49:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-09-24 14:49:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 807. [2020-09-24 14:49:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-09-24 14:49:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 899 transitions. [2020-09-24 14:49:38,988 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 899 transitions. Word has length 296 [2020-09-24 14:49:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:49:38,989 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 899 transitions. [2020-09-24 14:49:38,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:49:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 899 transitions. [2020-09-24 14:49:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-24 14:49:38,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:49:38,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:49:38,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:49:38,992 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:49:38,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:49:38,993 INFO L82 PathProgramCache]: Analyzing trace with hash -193365080, now seen corresponding path program 1 times [2020-09-24 14:49:38,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:49:38,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660494595] [2020-09-24 14:49:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:49:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:49:39,350 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 14:49:39,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:49:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat