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_spec5_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:51:05,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:51:05,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:51:05,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:51:05,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:51:05,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:51:05,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:51:05,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:51:05,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:51:05,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:51:05,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:51:05,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:51:05,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:51:05,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:51:05,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:51:05,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:51:05,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:51:05,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:51:05,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:51:05,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:51:05,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:51:05,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:51:05,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:51:05,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:51:05,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:51:05,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:51:05,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:51:05,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:51:05,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:51:05,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:51:05,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:51:05,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:51:05,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:51:05,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:51:05,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:51:05,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:51:05,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:51:05,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:51:05,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:51:05,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:51:05,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:51:05,649 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 [2019-09-10 02:51:05,680 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:51:05,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:51:05,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:51:05,681 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:51:05,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:51:05,682 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:51:05,682 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:51:05,682 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:51:05,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:51:05,683 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:51:05,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:51:05,684 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:51:05,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:51:05,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:51:05,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:51:05,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:51:05,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:51:05,685 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:51:05,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:51:05,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:51:05,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:51:05,686 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:51:05,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:51:05,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:51:05,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:51:05,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:51:05,687 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:51:05,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:51:05,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:51:05,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:51:05,717 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:51:05,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:51:05,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:51:05,736 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:51:05,736 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:51:05,737 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-10 02:51:05,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0caa76192/c29cb9c24cb14c9c8593141fbd581e98/FLAG521e1cce1 [2019-09-10 02:51:06,355 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:51:06,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-10 02:51:06,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0caa76192/c29cb9c24cb14c9c8593141fbd581e98/FLAG521e1cce1 [2019-09-10 02:51:06,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0caa76192/c29cb9c24cb14c9c8593141fbd581e98 [2019-09-10 02:51:06,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:51:06,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:51:06,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:06,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:51:06,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:51:06,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:06" (1/1) ... [2019-09-10 02:51:06,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788c9ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:06, skipping insertion in model container [2019-09-10 02:51:06,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:06" (1/1) ... [2019-09-10 02:51:06,670 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:51:06,721 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:51:07,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:07,222 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:51:07,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:07,392 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:51:07,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07 WrapperNode [2019-09-10 02:51:07,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:07,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:51:07,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:51:07,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:51:07,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (1/1) ... [2019-09-10 02:51:07,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:51:07,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:51:07,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:51:07,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:51:07,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (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 [2019-09-10 02:51:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:51:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:51:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:51:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:51:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:51:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:51:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-10 02:51:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:51:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:51:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:51:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:51:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:51:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:51:07,558 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:51:07,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:51:07,559 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:51:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:51:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:51:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:51:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:51:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:51:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:51:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:51:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:51:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:51:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:51:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:51:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:51:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:51:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:51:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:51:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:51:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:51:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:51:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:51:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:51:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:51:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:51:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:51:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:51:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:51:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:51:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:51:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:51:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:51:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:51:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:51:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:51:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:51:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-10 02:51:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:51:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:51:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:51:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:51:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:51:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:51:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:51:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:51:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:51:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:51:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:51:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:51:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:51:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:51:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:51:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:51:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:51:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:51:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:51:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:51:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:51:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:51:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:51:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:51:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:51:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:51:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:51:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:51:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:51:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:51:08,649 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:51:08,649 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:51:08,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:08 BoogieIcfgContainer [2019-09-10 02:51:08,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:51:08,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:51:08,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:51:08,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:51:08,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:51:06" (1/3) ... [2019-09-10 02:51:08,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710b59e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:08, skipping insertion in model container [2019-09-10 02:51:08,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:07" (2/3) ... [2019-09-10 02:51:08,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710b59e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:08, skipping insertion in model container [2019-09-10 02:51:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:08" (3/3) ... [2019-09-10 02:51:08,660 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2019-09-10 02:51:08,670 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:51:08,680 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:51:08,698 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:51:08,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:51:08,727 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:51:08,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:51:08,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:51:08,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:51:08,728 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:51:08,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:51:08,728 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:51:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-09-10 02:51:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-10 02:51:08,762 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:08,764 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:08,766 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:08,773 INFO L82 PathProgramCache]: Analyzing trace with hash -981984858, now seen corresponding path program 1 times [2019-09-10 02:51:08,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:08,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:08,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:08,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:08,819 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:09,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:09,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:51:09,072 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:09,079 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:09,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:09,098 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2019-09-10 02:51:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:09,150 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2019-09-10 02:51:09,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:09,152 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-10 02:51:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:09,166 INFO L225 Difference]: With dead ends: 160 [2019-09-10 02:51:09,166 INFO L226 Difference]: Without dead ends: 149 [2019-09-10 02:51:09,168 INFO L628 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 [2019-09-10 02:51:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-10 02:51:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-10 02:51:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-10 02:51:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2019-09-10 02:51:09,233 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2019-09-10 02:51:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:09,233 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2019-09-10 02:51:09,234 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2019-09-10 02:51:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-10 02:51:09,238 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:09,238 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:09,238 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:09,239 INFO L82 PathProgramCache]: Analyzing trace with hash 598368098, now seen corresponding path program 1 times [2019-09-10 02:51:09,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:09,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:09,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:09,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:09,240 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:09,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:09,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:51:09,358 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:09,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:51:09,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:51:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:51:09,361 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 3 states. [2019-09-10 02:51:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:09,378 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2019-09-10 02:51:09,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:51:09,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-10 02:51:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:09,381 INFO L225 Difference]: With dead ends: 140 [2019-09-10 02:51:09,381 INFO L226 Difference]: Without dead ends: 140 [2019-09-10 02:51:09,382 INFO L628 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 [2019-09-10 02:51:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-10 02:51:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-10 02:51:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-10 02:51:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-09-10 02:51:09,398 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 60 [2019-09-10 02:51:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:09,398 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-09-10 02:51:09,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:51:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-09-10 02:51:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 02:51:09,402 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:09,403 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:09,403 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:09,403 INFO L82 PathProgramCache]: Analyzing trace with hash 75711308, now seen corresponding path program 1 times [2019-09-10 02:51:09,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:09,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:09,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:09,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:09,407 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:09,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:09,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:09,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:09,641 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:09,642 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 7 states. [2019-09-10 02:51:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:10,168 INFO L93 Difference]: Finished difference Result 308 states and 370 transitions. [2019-09-10 02:51:10,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:51:10,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-10 02:51:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:10,199 INFO L225 Difference]: With dead ends: 308 [2019-09-10 02:51:10,199 INFO L226 Difference]: Without dead ends: 308 [2019-09-10 02:51:10,199 INFO L628 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 [2019-09-10 02:51:10,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-09-10 02:51:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2019-09-10 02:51:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-09-10 02:51:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 364 transitions. [2019-09-10 02:51:10,229 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 364 transitions. Word has length 64 [2019-09-10 02:51:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:10,229 INFO L475 AbstractCegarLoop]: Abstraction has 300 states and 364 transitions. [2019-09-10 02:51:10,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 364 transitions. [2019-09-10 02:51:10,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 02:51:10,232 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:10,232 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:10,232 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:10,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1055869647, now seen corresponding path program 1 times [2019-09-10 02:51:10,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:10,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:10,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:10,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:10,235 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:10,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:10,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:10,417 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:10,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:10,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:10,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:10,419 INFO L87 Difference]: Start difference. First operand 300 states and 364 transitions. Second operand 7 states. [2019-09-10 02:51:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:11,262 INFO L93 Difference]: Finished difference Result 499 states and 620 transitions. [2019-09-10 02:51:11,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 02:51:11,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-10 02:51:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:11,267 INFO L225 Difference]: With dead ends: 499 [2019-09-10 02:51:11,267 INFO L226 Difference]: Without dead ends: 499 [2019-09-10 02:51:11,267 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:51:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-10 02:51:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 446. [2019-09-10 02:51:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-09-10 02:51:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 533 transitions. [2019-09-10 02:51:11,303 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 533 transitions. Word has length 70 [2019-09-10 02:51:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:11,304 INFO L475 AbstractCegarLoop]: Abstraction has 446 states and 533 transitions. [2019-09-10 02:51:11,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 533 transitions. [2019-09-10 02:51:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-10 02:51:11,306 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:11,307 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:11,307 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:11,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2082867985, now seen corresponding path program 1 times [2019-09-10 02:51:11,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:11,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:11,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:11,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:11,309 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:11,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:11,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:51:11,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:11,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:51:11,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:51:11,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:11,439 INFO L87 Difference]: Start difference. First operand 446 states and 533 transitions. Second operand 4 states. [2019-09-10 02:51:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:11,771 INFO L93 Difference]: Finished difference Result 1200 states and 1503 transitions. [2019-09-10 02:51:11,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:51:11,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-10 02:51:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:11,782 INFO L225 Difference]: With dead ends: 1200 [2019-09-10 02:51:11,783 INFO L226 Difference]: Without dead ends: 1200 [2019-09-10 02:51:11,783 INFO L628 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 [2019-09-10 02:51:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2019-09-10 02:51:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1174. [2019-09-10 02:51:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-09-10 02:51:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1455 transitions. [2019-09-10 02:51:11,857 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1455 transitions. Word has length 107 [2019-09-10 02:51:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:11,858 INFO L475 AbstractCegarLoop]: Abstraction has 1174 states and 1455 transitions. [2019-09-10 02:51:11,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:51:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1455 transitions. [2019-09-10 02:51:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-10 02:51:11,861 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:11,862 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:11,862 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:11,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1842327856, now seen corresponding path program 1 times [2019-09-10 02:51:11,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:11,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:11,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:11,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:11,864 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:11,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:11,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:51:11,954 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:11,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:51:11,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:51:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:51:11,955 INFO L87 Difference]: Start difference. First operand 1174 states and 1455 transitions. Second operand 6 states. [2019-09-10 02:51:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:12,011 INFO L93 Difference]: Finished difference Result 1216 states and 1507 transitions. [2019-09-10 02:51:12,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:51:12,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-10 02:51:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:12,020 INFO L225 Difference]: With dead ends: 1216 [2019-09-10 02:51:12,020 INFO L226 Difference]: Without dead ends: 1216 [2019-09-10 02:51:12,020 INFO L628 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 [2019-09-10 02:51:12,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2019-09-10 02:51:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1204. [2019-09-10 02:51:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-09-10 02:51:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1487 transitions. [2019-09-10 02:51:12,069 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1487 transitions. Word has length 107 [2019-09-10 02:51:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:12,070 INFO L475 AbstractCegarLoop]: Abstraction has 1204 states and 1487 transitions. [2019-09-10 02:51:12,070 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:51:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1487 transitions. [2019-09-10 02:51:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-10 02:51:12,073 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:12,073 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:12,074 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash 85944846, now seen corresponding path program 1 times [2019-09-10 02:51:12,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:12,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:12,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:12,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:12,076 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:12,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:12,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:51:12,186 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:12,187 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:51:12,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:51:12,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:12,188 INFO L87 Difference]: Start difference. First operand 1204 states and 1487 transitions. Second operand 8 states. [2019-09-10 02:51:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:12,230 INFO L93 Difference]: Finished difference Result 997 states and 1218 transitions. [2019-09-10 02:51:12,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:51:12,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-10 02:51:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:12,239 INFO L225 Difference]: With dead ends: 997 [2019-09-10 02:51:12,239 INFO L226 Difference]: Without dead ends: 997 [2019-09-10 02:51:12,240 INFO L628 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 [2019-09-10 02:51:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-09-10 02:51:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2019-09-10 02:51:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2019-09-10 02:51:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1218 transitions. [2019-09-10 02:51:12,316 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1218 transitions. Word has length 107 [2019-09-10 02:51:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:12,317 INFO L475 AbstractCegarLoop]: Abstraction has 997 states and 1218 transitions. [2019-09-10 02:51:12,317 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:51:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1218 transitions. [2019-09-10 02:51:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-10 02:51:12,321 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:12,321 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:12,321 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:12,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1945052595, now seen corresponding path program 1 times [2019-09-10 02:51:12,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:12,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:12,324 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:12,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:12,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-10 02:51:12,618 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:12,620 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 02:51:12,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 02:51:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-10 02:51:12,621 INFO L87 Difference]: Start difference. First operand 997 states and 1218 transitions. Second operand 11 states. [2019-09-10 02:51:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:13,785 INFO L93 Difference]: Finished difference Result 1821 states and 2262 transitions. [2019-09-10 02:51:13,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-10 02:51:13,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2019-09-10 02:51:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:13,798 INFO L225 Difference]: With dead ends: 1821 [2019-09-10 02:51:13,799 INFO L226 Difference]: Without dead ends: 1821 [2019-09-10 02:51:13,800 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-09-10 02:51:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-09-10 02:51:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1602. [2019-09-10 02:51:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2019-09-10 02:51:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1968 transitions. [2019-09-10 02:51:13,898 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1968 transitions. Word has length 111 [2019-09-10 02:51:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:13,899 INFO L475 AbstractCegarLoop]: Abstraction has 1602 states and 1968 transitions. [2019-09-10 02:51:13,899 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 02:51:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1968 transitions. [2019-09-10 02:51:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-10 02:51:13,905 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:13,905 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 02:51:13,906 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash -451795391, now seen corresponding path program 1 times [2019-09-10 02:51:13,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:13,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:13,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:13,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:13,909 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:51:14,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:14,118 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:51:14,130 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2019-09-10 02:51:14,139 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [125], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [170], [195], [197], [202], [205], [206], [208], [213], [215], [216], [217], [218], [219], [220], [224], [227], [231], [237], [266], [270], [273], [277], [278], [281], [282], [283], [285], [286], [287], [289], [292], [294], [297], [300], [309], [311], [312], [315], [317], [320], [327], [330], [331], [332], [356], [358], [359], [377], [378], [428], [429], [439], [447], [448], [449], [450], [451], [452], [453], [454], [455], [489], [490], [493], [494], [495], [496], [497], [498], [503], [504], [507], [508], [509], [510], [511], [512], [513], [514], [515], [516], [517], [518], [519], [520], [525], [526], [527], [528], [529], [530], [531], [533], [534], [535], [536], [539], [540], [543], [544], [545], [547], [548], [553], [554], [555] [2019-09-10 02:51:14,211 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:51:14,212 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:51:14,329 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:51:14,331 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-10 02:51:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:14,338 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:51:14,445 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:51:14,445 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:51:14,456 INFO L420 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2019-09-10 02:51:14,457 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:51:14,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:51:14,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 02:51:14,458 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:14,459 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:14,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:14,461 INFO L87 Difference]: Start difference. First operand 1602 states and 1968 transitions. Second operand 2 states. [2019-09-10 02:51:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:14,461 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:51:14,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:14,462 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-09-10 02:51:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:14,462 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:51:14,462 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:51:14,463 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:51:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:51:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:51:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:51:14,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2019-09-10 02:51:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:14,464 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:51:14,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:51:14,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:51:14,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:51:14 BoogieIcfgContainer [2019-09-10 02:51:14,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:51:14,474 INFO L168 Benchmark]: Toolchain (without parser) took 7819.37 ms. Allocated memory was 132.6 MB in the beginning and 328.2 MB in the end (delta: 195.6 MB). Free memory was 87.6 MB in the beginning and 219.3 MB in the end (delta: -131.7 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:14,476 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 107.0 MB in the beginning and 106.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-10 02:51:14,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.64 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.4 MB in the beginning and 162.5 MB in the end (delta: -75.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:14,479 INFO L168 Benchmark]: Boogie Preprocessor took 102.30 ms. Allocated memory is still 199.2 MB. Free memory was 162.5 MB in the beginning and 158.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:14,481 INFO L168 Benchmark]: RCFGBuilder took 1154.62 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 158.1 MB in the beginning and 189.2 MB in the end (delta: -31.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:14,485 INFO L168 Benchmark]: TraceAbstraction took 5818.59 ms. Allocated memory was 222.8 MB in the beginning and 328.2 MB in the end (delta: 105.4 MB). Free memory was 189.2 MB in the beginning and 219.3 MB in the end (delta: -30.1 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:14,493 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 107.0 MB in the beginning and 106.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.64 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.4 MB in the beginning and 162.5 MB in the end (delta: -75.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.30 ms. Allocated memory is still 199.2 MB. Free memory was 162.5 MB in the beginning and 158.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1154.62 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 158.1 MB in the beginning and 189.2 MB in the end (delta: -31.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5818.59 ms. Allocated memory was 222.8 MB in the beginning and 328.2 MB in the end (delta: 105.4 MB). Free memory was 189.2 MB in the beginning and 219.3 MB in the end (delta: -30.1 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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, 248 locations, 1 error locations. SAFE Result, 5.7s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1572 SDtfs, 1311 SDslu, 3552 SDs, 0 SdLazy, 1642 SolverSat, 420 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1602occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8106508875739645 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 318 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 855 NumberOfCodeBlocks, 855 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 148868 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 67/74 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...