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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:13,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:13,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:13,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:13,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:13,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:13,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:13,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:13,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:13,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:13,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:13,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:13,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:13,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:13,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:13,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:13,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:13,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:13,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:13,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:13,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:13,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:13,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:13,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:13,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:13,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:13,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:13,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:13,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:13,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:13,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:13,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:13,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:13,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:13,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:13,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:13,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:13,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:13,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:13,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:13,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:13,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:13,612 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:13,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:13,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:13,613 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:13,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:13,614 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:13,614 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:13,614 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:13,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:13,615 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:13,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:13,616 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:13,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:13,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:13,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:13,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:13,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:13,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:13,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:13,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:13,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:13,618 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:13,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:13,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:13,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:13,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:13,619 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:13,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:13,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:13,619 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:13,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:13,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:13,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:13,677 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:13,678 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:13,679 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-09-20 13:30:13,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b317684e/a2f3e9a2c1be46a09cfa1649a112faa6/FLAGa03c9914a [2019-09-20 13:30:14,352 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:14,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-09-20 13:30:14,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b317684e/a2f3e9a2c1be46a09cfa1649a112faa6/FLAGa03c9914a [2019-09-20 13:30:14,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b317684e/a2f3e9a2c1be46a09cfa1649a112faa6 [2019-09-20 13:30:14,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:14,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:14,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:14,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:14,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:14,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:14" (1/1) ... [2019-09-20 13:30:14,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2e74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:14, skipping insertion in model container [2019-09-20 13:30:14,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:14" (1/1) ... [2019-09-20 13:30:14,677 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:14,724 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:15,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:15,178 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:15,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:15,321 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:15,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15 WrapperNode [2019-09-20 13:30:15,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:15,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:15,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:15,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:15,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:15,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:15,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:15,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:15,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 13:30:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:15,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:15,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:16,857 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:16,857 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:16,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:16 BoogieIcfgContainer [2019-09-20 13:30:16,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:16,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:16,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:16,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:16,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:14" (1/3) ... [2019-09-20 13:30:16,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c068f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:16, skipping insertion in model container [2019-09-20 13:30:16,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15" (2/3) ... [2019-09-20 13:30:16,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c068f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:16, skipping insertion in model container [2019-09-20 13:30:16,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:16" (3/3) ... [2019-09-20 13:30:16,872 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2019-09-20 13:30:16,882 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:16,894 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:16,912 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:16,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:16,948 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:16,948 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:16,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:16,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:16,950 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:16,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:16,951 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-09-20 13:30:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:16,995 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:16,996 INFO L407 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] [2019-09-20 13:30:16,999 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:17,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2019-09-20 13:30:17,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:17,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:17,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,062 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:17,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:17,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:17,378 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:17,386 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:17,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:17,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:17,404 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 2 states. [2019-09-20 13:30:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:17,433 INFO L93 Difference]: Finished difference Result 148 states and 172 transitions. [2019-09-20 13:30:17,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:17,434 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:17,448 INFO L225 Difference]: With dead ends: 148 [2019-09-20 13:30:17,448 INFO L226 Difference]: Without dead ends: 137 [2019-09-20 13:30:17,450 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-09-20 13:30:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-09-20 13:30:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-20 13:30:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-09-20 13:30:17,506 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2019-09-20 13:30:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:17,507 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-09-20 13:30:17,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-09-20 13:30:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:17,511 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:17,511 INFO L407 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] [2019-09-20 13:30:17,512 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2019-09-20 13:30:17,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:17,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:17,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,520 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:17,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:17,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:17,714 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:17,718 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:17,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:17,719 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 3 states. [2019-09-20 13:30:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:17,752 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2019-09-20 13:30:17,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:17,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:17,757 INFO L225 Difference]: With dead ends: 128 [2019-09-20 13:30:17,758 INFO L226 Difference]: Without dead ends: 128 [2019-09-20 13:30:17,759 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-09-20 13:30:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-09-20 13:30:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-09-20 13:30:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2019-09-20 13:30:17,774 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2019-09-20 13:30:17,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:17,775 INFO L475 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2019-09-20 13:30:17,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2019-09-20 13:30:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:17,778 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:17,778 INFO L407 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] [2019-09-20 13:30:17,778 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:17,779 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2019-09-20 13:30:17,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:17,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:17,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:17,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:17,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:17,916 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:17,916 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:17,917 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 7 states. [2019-09-20 13:30:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:18,263 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2019-09-20 13:30:18,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:18,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-20 13:30:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:18,270 INFO L225 Difference]: With dead ends: 128 [2019-09-20 13:30:18,271 INFO L226 Difference]: Without dead ends: 128 [2019-09-20 13:30:18,271 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-09-20 13:30:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-09-20 13:30:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-09-20 13:30:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2019-09-20 13:30:18,285 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2019-09-20 13:30:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:18,285 INFO L475 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2019-09-20 13:30:18,286 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2019-09-20 13:30:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:30:18,288 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,289 INFO L407 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] [2019-09-20 13:30:18,289 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2019-09-20 13:30:18,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,293 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:18,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:18,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:18,434 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:18,434 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:18,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:18,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:18,435 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 5 states. [2019-09-20 13:30:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:18,961 INFO L93 Difference]: Finished difference Result 229 states and 266 transitions. [2019-09-20 13:30:18,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:18,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-09-20 13:30:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:18,971 INFO L225 Difference]: With dead ends: 229 [2019-09-20 13:30:18,972 INFO L226 Difference]: Without dead ends: 229 [2019-09-20 13:30:18,972 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-09-20 13:30:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 210. [2019-09-20 13:30:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-09-20 13:30:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2019-09-20 13:30:19,023 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2019-09-20 13:30:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:19,023 INFO L475 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2019-09-20 13:30:19,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2019-09-20 13:30:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:30:19,026 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:19,026 INFO L407 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] [2019-09-20 13:30:19,026 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2019-09-20 13:30:19,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:19,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:19,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,030 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:19,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:19,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:19,130 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:19,131 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:19,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:19,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:19,132 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 6 states. [2019-09-20 13:30:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:19,331 INFO L93 Difference]: Finished difference Result 374 states and 427 transitions. [2019-09-20 13:30:19,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:19,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-09-20 13:30:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:19,339 INFO L225 Difference]: With dead ends: 374 [2019-09-20 13:30:19,339 INFO L226 Difference]: Without dead ends: 374 [2019-09-20 13:30:19,340 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2019-09-20 13:30:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 368. [2019-09-20 13:30:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2019-09-20 13:30:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2019-09-20 13:30:19,400 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2019-09-20 13:30:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:19,401 INFO L475 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2019-09-20 13:30:19,401 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2019-09-20 13:30:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-20 13:30:19,408 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:19,409 INFO L407 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] [2019-09-20 13:30:19,409 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2019-09-20 13:30:19,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:19,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:19,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,414 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:19,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:19,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:19,533 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:19,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:19,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:19,535 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 7 states. [2019-09-20 13:30:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,405 INFO L93 Difference]: Finished difference Result 399 states and 469 transitions. [2019-09-20 13:30:20,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:20,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2019-09-20 13:30:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,409 INFO L225 Difference]: With dead ends: 399 [2019-09-20 13:30:20,409 INFO L226 Difference]: Without dead ends: 399 [2019-09-20 13:30:20,410 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2019-09-20 13:30:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 367. [2019-09-20 13:30:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2019-09-20 13:30:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2019-09-20 13:30:20,429 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2019-09-20 13:30:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,430 INFO L475 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2019-09-20 13:30:20,430 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2019-09-20 13:30:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:20,432 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,432 INFO L407 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] [2019-09-20 13:30:20,432 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2019-09-20 13:30:20,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,436 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:20,519 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,520 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:20,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:20,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:20,521 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 6 states. [2019-09-20 13:30:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,554 INFO L93 Difference]: Finished difference Result 377 states and 427 transitions. [2019-09-20 13:30:20,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:20,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-20 13:30:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,558 INFO L225 Difference]: With dead ends: 377 [2019-09-20 13:30:20,558 INFO L226 Difference]: Without dead ends: 377 [2019-09-20 13:30:20,558 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:20,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-09-20 13:30:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2019-09-20 13:30:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2019-09-20 13:30:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2019-09-20 13:30:20,585 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2019-09-20 13:30:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,586 INFO L475 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2019-09-20 13:30:20,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2019-09-20 13:30:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:20,589 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,589 INFO L407 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] [2019-09-20 13:30:20,589 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2019-09-20 13:30:20,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,594 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:20,700 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:20,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:20,701 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 8 states. [2019-09-20 13:30:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,735 INFO L93 Difference]: Finished difference Result 391 states and 441 transitions. [2019-09-20 13:30:20,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:20,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-09-20 13:30:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,739 INFO L225 Difference]: With dead ends: 391 [2019-09-20 13:30:20,739 INFO L226 Difference]: Without dead ends: 391 [2019-09-20 13:30:20,740 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-09-20 13:30:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385. [2019-09-20 13:30:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-09-20 13:30:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2019-09-20 13:30:20,754 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2019-09-20 13:30:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,755 INFO L475 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2019-09-20 13:30:20,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2019-09-20 13:30:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:20,757 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,757 INFO L407 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] [2019-09-20 13:30:20,757 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,758 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2019-09-20 13:30:20,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,781 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:20,867 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:20,868 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 4 states. [2019-09-20 13:30:21,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,064 INFO L93 Difference]: Finished difference Result 805 states and 951 transitions. [2019-09-20 13:30:21,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:21,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-09-20 13:30:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,070 INFO L225 Difference]: With dead ends: 805 [2019-09-20 13:30:21,070 INFO L226 Difference]: Without dead ends: 805 [2019-09-20 13:30:21,070 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2019-09-20 13:30:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 517. [2019-09-20 13:30:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2019-09-20 13:30:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 580 transitions. [2019-09-20 13:30:21,096 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 580 transitions. Word has length 89 [2019-09-20 13:30:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,097 INFO L475 AbstractCegarLoop]: Abstraction has 517 states and 580 transitions. [2019-09-20 13:30:21,097 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 580 transitions. [2019-09-20 13:30:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:21,099 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,099 INFO L407 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] [2019-09-20 13:30:21,100 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2019-09-20 13:30:21,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,103 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:21,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:21,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:21,161 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,162 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:21,162 INFO L87 Difference]: Start difference. First operand 517 states and 580 transitions. Second operand 3 states. [2019-09-20 13:30:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,193 INFO L93 Difference]: Finished difference Result 793 states and 904 transitions. [2019-09-20 13:30:21,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:21,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2019-09-20 13:30:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,198 INFO L225 Difference]: With dead ends: 793 [2019-09-20 13:30:21,198 INFO L226 Difference]: Without dead ends: 793 [2019-09-20 13:30:21,199 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2019-09-20 13:30:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 662. [2019-09-20 13:30:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2019-09-20 13:30:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 753 transitions. [2019-09-20 13:30:21,227 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 753 transitions. Word has length 93 [2019-09-20 13:30:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,227 INFO L475 AbstractCegarLoop]: Abstraction has 662 states and 753 transitions. [2019-09-20 13:30:21,228 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 753 transitions. [2019-09-20 13:30:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-09-20 13:30:21,231 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,232 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:21,232 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2019-09-20 13:30:21,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,236 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-20 13:30:21,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:21,347 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:21,348 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 153 with the following transitions: [2019-09-20 13:30:21,351 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [159], [161], [164], [167], [169], [175], [178], [190], [192], [195], [197], [200], [203], [206], [214], [215], [216], [226], [227], [230], [232], [237], [239], [240], [246], [250], [256], [283], [284], [294], [297], [299], [302], [312], [315], [319], [320], [323], [324], [325], [419], [420], [425], [427], [430], [438], [439], [440], [441], [442], [443], [444], [445], [446], [486], [487], [488], [489], [490], [491], [494], [495], [498], [499], [500], [501], [502], [504], [505], [508], [509], [510], [511], [516], [517], [518], [519], [526], [527], [528], [536], [537], [538] [2019-09-20 13:30:21,403 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:21,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:21,496 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:21,498 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:30:21,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,503 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:21,586 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:21,586 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:21,597 INFO L420 sIntCurrentIteration]: We unified 151 AI predicates to 151 [2019-09-20 13:30:21,598 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:21,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:21,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-09-20 13:30:21,599 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,602 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:21,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:21,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:21,602 INFO L87 Difference]: Start difference. First operand 662 states and 753 transitions. Second operand 2 states. [2019-09-20 13:30:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,603 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:21,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:21,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 152 [2019-09-20 13:30:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,604 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:21,604 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:21,604 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:21,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2019-09-20 13:30:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,609 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:21,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:21,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:21,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:21 BoogieIcfgContainer [2019-09-20 13:30:21,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:21,617 INFO L168 Benchmark]: Toolchain (without parser) took 6955.59 ms. Allocated memory was 132.1 MB in the beginning and 325.1 MB in the end (delta: 192.9 MB). Free memory was 85.7 MB in the beginning and 129.9 MB in the end (delta: -44.2 MB). Peak memory consumption was 148.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,618 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 132.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.93 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 85.5 MB in the beginning and 162.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,620 INFO L168 Benchmark]: Boogie Preprocessor took 128.27 ms. Allocated memory is still 198.7 MB. Free memory was 162.9 MB in the beginning and 157.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,621 INFO L168 Benchmark]: RCFGBuilder took 1402.14 ms. Allocated memory was 198.7 MB in the beginning and 221.2 MB in the end (delta: 22.5 MB). Free memory was 157.5 MB in the beginning and 187.6 MB in the end (delta: -30.1 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,622 INFO L168 Benchmark]: TraceAbstraction took 4754.35 ms. Allocated memory was 221.2 MB in the beginning and 325.1 MB in the end (delta: 103.8 MB). Free memory was 187.6 MB in the beginning and 129.9 MB in the end (delta: 57.6 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,626 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 132.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.93 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 85.5 MB in the beginning and 162.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.27 ms. Allocated memory is still 198.7 MB. Free memory was 162.9 MB in the beginning and 157.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1402.14 ms. Allocated memory was 198.7 MB in the beginning and 221.2 MB in the end (delta: 22.5 MB). Free memory was 157.5 MB in the beginning and 187.6 MB in the end (delta: -30.1 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4754.35 ms. Allocated memory was 221.2 MB in the beginning and 325.1 MB in the end (delta: 103.8 MB). Free memory was 187.6 MB in the beginning and 129.9 MB in the end (delta: 57.6 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 976]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 244 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1590 SDtfs, 1007 SDslu, 3095 SDs, 0 SdLazy, 1041 SolverSat, 283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=662occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8741721854304636 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 482 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 914 NumberOfCodeBlocks, 914 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 903 ConstructedInterpolants, 0 QuantifiedInterpolants, 131187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 49/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...