/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:03:05,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:03:05,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:03:05,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:03:05,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:03:05,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:03:05,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:03:05,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:03:05,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:03:05,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:03:05,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:03:05,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:03:05,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:03:05,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:03:05,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:03:05,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:03:05,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:03:05,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:03:05,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:03:05,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:03:05,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:03:05,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:03:05,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:03:05,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:03:05,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:03:05,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:03:05,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:03:05,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:03:05,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:03:05,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:03:05,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:03:05,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:03:05,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:03:05,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:03:05,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:03:05,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:03:05,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:03:05,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:03:05,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:03:05,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:03:05,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:03:05,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:03:05,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:03:05,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:03:05,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:03:05,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:03:05,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:03:05,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:03:05,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:03:05,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:03:05,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:03:05,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:03:05,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:03:05,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:03:05,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:03:05,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:03:05,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:03:05,812 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:03:05,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:03:05,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:03:05,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:05,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:03:05,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:03:05,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:03:05,814 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:03:06,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:03:06,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:03:06,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:03:06,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:03:06,151 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:03:06,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-22 18:03:06,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0ef5dc2/8653c97bf4144e3ea61556c163d45079/FLAG5bd767be9 [2020-08-22 18:03:06,809 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:03:06,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-22 18:03:06,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0ef5dc2/8653c97bf4144e3ea61556c163d45079/FLAG5bd767be9 [2020-08-22 18:03:07,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0ef5dc2/8653c97bf4144e3ea61556c163d45079 [2020-08-22 18:03:07,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:03:07,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:03:07,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:07,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:03:07,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:03:07,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456593db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07, skipping insertion in model container [2020-08-22 18:03:07,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:03:07,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:03:07,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:07,535 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:03:07,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:07,675 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:03:07,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07 WrapperNode [2020-08-22 18:03:07,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:07,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:03:07,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:03:07,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:03:07,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (1/1) ... [2020-08-22 18:03:07,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:03:07,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:03:07,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:03:07,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:03:07,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (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 [2020-08-22 18:03:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:03:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:03:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:03:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:03:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:03:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:03:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:03:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:03:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:03:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:03:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:03:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:03:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:03:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:03:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:03:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:03:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:03:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:03:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:03:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:03:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:03:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:03:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:03:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:03:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:03:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:03:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:03:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:03:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:03:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:03:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:03:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:03:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:03:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:03:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:03:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:03:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:03:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:03:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:03:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:03:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:03:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:03:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:03:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:03:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:03:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:03:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:03:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:03:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:03:08,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:03:08,925 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:03:08,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:08 BoogieIcfgContainer [2020-08-22 18:03:08,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:03:08,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:03:08,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:03:08,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:03:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:03:07" (1/3) ... [2020-08-22 18:03:08,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5fa1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:08, skipping insertion in model container [2020-08-22 18:03:08,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:07" (2/3) ... [2020-08-22 18:03:08,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5fa1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:08, skipping insertion in model container [2020-08-22 18:03:08,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:08" (3/3) ... [2020-08-22 18:03:08,939 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2020-08-22 18:03:08,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:03:08,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:03:08,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:03:08,986 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:03:08,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:03:08,986 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:03:08,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:03:08,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:03:08,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:03:08,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:03:08,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:03:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-08-22 18:03:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:03:09,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:09,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:09,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:09,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1134805363, now seen corresponding path program 1 times [2020-08-22 18:03:09,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:09,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103695967] [2020-08-22 18:03:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:09,098 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,775 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:03:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:09,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103695967] [2020-08-22 18:03:09,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:09,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:03:09,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669202536] [2020-08-22 18:03:09,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:03:09,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:09,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:03:09,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:03:10,002 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 3 states. [2020-08-22 18:03:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:11,080 INFO L93 Difference]: Finished difference Result 365 states and 438 transitions. [2020-08-22 18:03:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:03:11,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:03:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:11,100 INFO L225 Difference]: With dead ends: 365 [2020-08-22 18:03:11,101 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 18:03:11,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:03:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 18:03:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-08-22 18:03:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-22 18:03:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 215 transitions. [2020-08-22 18:03:11,220 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 215 transitions. Word has length 153 [2020-08-22 18:03:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:11,221 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 215 transitions. [2020-08-22 18:03:11,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:03:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 215 transitions. [2020-08-22 18:03:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:03:11,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:11,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:11,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:03:11,227 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2008587575, now seen corresponding path program 1 times [2020-08-22 18:03:11,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:11,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966019944] [2020-08-22 18:03:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:11,232 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,619 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:03:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:03:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:03:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:11,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966019944] [2020-08-22 18:03:11,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:11,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:03:11,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851951862] [2020-08-22 18:03:11,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:03:11,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:11,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:03:11,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:03:11,696 INFO L87 Difference]: Start difference. First operand 201 states and 215 transitions. Second operand 4 states. [2020-08-22 18:03:12,354 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:03:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:12,892 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2020-08-22 18:03:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:03:12,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:03:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:12,896 INFO L225 Difference]: With dead ends: 282 [2020-08-22 18:03:12,896 INFO L226 Difference]: Without dead ends: 221 [2020-08-22 18:03:12,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:03:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-08-22 18:03:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-08-22 18:03:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-08-22 18:03:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2020-08-22 18:03:12,987 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 154 [2020-08-22 18:03:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:12,990 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2020-08-22 18:03:12,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:03:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2020-08-22 18:03:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:03:12,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:12,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:12,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:03:12,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1539733420, now seen corresponding path program 1 times [2020-08-22 18:03:12,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:12,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035005193] [2020-08-22 18:03:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:13,019 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,400 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:13,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:03:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:13,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035005193] [2020-08-22 18:03:13,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:13,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:03:13,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556919020] [2020-08-22 18:03:13,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:03:13,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:03:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:03:13,569 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand 9 states. [2020-08-22 18:03:14,014 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:14,367 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:03:14,608 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:03:14,849 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:15,098 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:15,334 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:16,272 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2020-08-22 18:03:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:03:16,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:03:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:16,278 INFO L225 Difference]: With dead ends: 302 [2020-08-22 18:03:16,278 INFO L226 Difference]: Without dead ends: 221 [2020-08-22 18:03:16,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:03:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-08-22 18:03:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-08-22 18:03:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-08-22 18:03:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2020-08-22 18:03:16,344 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 163 [2020-08-22 18:03:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:16,344 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2020-08-22 18:03:16,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:03:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2020-08-22 18:03:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 18:03:16,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:16,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:16,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:03:16,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:16,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1213081293, now seen corresponding path program 1 times [2020-08-22 18:03:16,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:16,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795886783] [2020-08-22 18:03:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:16,352 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,690 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:03:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:03:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:03:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 18:03:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:16,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795886783] [2020-08-22 18:03:16,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:16,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:03:16,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590624062] [2020-08-22 18:03:16,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:03:16,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:16,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:03:16,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:03:16,802 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand 8 states. [2020-08-22 18:03:17,383 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:18,628 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:18,864 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:19,111 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:19,417 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:19,657 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:19,910 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:20,126 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:20,429 INFO L93 Difference]: Finished difference Result 368 states and 417 transitions. [2020-08-22 18:03:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:03:20,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-08-22 18:03:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:20,436 INFO L225 Difference]: With dead ends: 368 [2020-08-22 18:03:20,437 INFO L226 Difference]: Without dead ends: 287 [2020-08-22 18:03:20,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:03:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-22 18:03:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 262. [2020-08-22 18:03:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-22 18:03:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-08-22 18:03:20,546 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 166 [2020-08-22 18:03:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:20,547 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-08-22 18:03:20,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:03:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-08-22 18:03:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:03:20,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:20,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:20,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:03:20,551 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:20,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1773237520, now seen corresponding path program 1 times [2020-08-22 18:03:20,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:20,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126925829] [2020-08-22 18:03:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:20,555 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:20,943 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 18:03:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:03:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:03:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:03:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:03:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:03:21,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126925829] [2020-08-22 18:03:21,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:21,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:03:21,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855508931] [2020-08-22 18:03:21,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:03:21,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:03:21,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:03:21,134 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-08-22 18:03:21,765 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:22,455 INFO L93 Difference]: Finished difference Result 361 states and 402 transitions. [2020-08-22 18:03:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 18:03:22,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-08-22 18:03:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:22,458 INFO L225 Difference]: With dead ends: 361 [2020-08-22 18:03:22,458 INFO L226 Difference]: Without dead ends: 269 [2020-08-22 18:03:22,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:03:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-22 18:03:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2020-08-22 18:03:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 18:03:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 263 transitions. [2020-08-22 18:03:22,540 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 263 transitions. Word has length 171 [2020-08-22 18:03:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:22,541 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 263 transitions. [2020-08-22 18:03:22,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:03:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 263 transitions. [2020-08-22 18:03:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:03:22,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:22,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:22,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:03:22,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1613053112, now seen corresponding path program 1 times [2020-08-22 18:03:22,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:22,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459381055] [2020-08-22 18:03:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:22,547 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:03:22,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:03:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:03:22,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:03:22,814 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:03:22,814 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:03:22,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:03:22,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:03:22 BoogieIcfgContainer [2020-08-22 18:03:22,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:03:22,845 INFO L168 Benchmark]: Toolchain (without parser) took 15789.94 ms. Allocated memory was 136.8 MB in the beginning and 550.5 MB in the end (delta: 413.7 MB). Free memory was 100.1 MB in the beginning and 101.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 412.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:22,846 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:03:22,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.63 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 172.2 MB in the end (delta: -72.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:22,848 INFO L168 Benchmark]: Boogie Preprocessor took 90.59 ms. Allocated memory is still 200.8 MB. Free memory was 172.2 MB in the beginning and 167.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:22,849 INFO L168 Benchmark]: RCFGBuilder took 1164.49 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 167.5 MB in the beginning and 183.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:22,850 INFO L168 Benchmark]: TraceAbstraction took 13910.27 ms. Allocated memory was 229.6 MB in the beginning and 550.5 MB in the end (delta: 320.9 MB). Free memory was 183.0 MB in the beginning and 101.5 MB in the end (delta: 81.5 MB). Peak memory consumption was 402.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:22,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.63 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 172.2 MB in the end (delta: -72.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.59 ms. Allocated memory is still 200.8 MB. Free memory was 172.2 MB in the beginning and 167.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1164.49 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 167.5 MB in the beginning and 183.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13910.27 ms. Allocated memory was 229.6 MB in the beginning and 550.5 MB in the end (delta: 320.9 MB). Free memory was 183.0 MB in the beginning and 101.5 MB in the end (delta: 81.5 MB). Peak memory consumption was 402.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int pumpRunning = 0; [L49] int systemActive = 1; [L307] int cleanupTimeShifts = 4; [L403] int waterLevel = 1; [L404] int methaneLevelCritical = 0; [L652] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L380] int retValue_acc ; [L381] int tmp ; [L385] FCALL select_helpers() [L386] FCALL select_features() [L387] CALL, EXPR valid_product() [L253] int retValue_acc ; [L256] retValue_acc = 1 [L257] return (retValue_acc); [L387] RET, EXPR valid_product() [L387] tmp = valid_product() [L389] COND TRUE \read(tmp) [L391] FCALL setup() [L392] CALL runTest() [L374] CALL test() [L160] int splverifierCounter ; [L161] int tmp ; [L162] int tmp___0 ; [L163] int tmp___1 ; [L164] int tmp___2 ; [L167] splverifierCounter = 0 [L169] COND TRUE 1 [L171] COND TRUE splverifierCounter < 4 [L177] tmp = __VERIFIER_nondet_int() [L179] COND TRUE \read(tmp) [L181] CALL waterRise() [L421] COND TRUE waterLevel < 2 [L422] waterLevel = waterLevel + 1 [L181] RET waterRise() [L187] tmp___0 = __VERIFIER_nondet_int() [L189] COND FALSE !(\read(tmp___0)) [L197] tmp___2 = __VERIFIER_nondet_int() [L199] COND TRUE \read(tmp___2) [L212] CALL timeShift() [L56] COND FALSE !(\read(pumpRunning)) [L63] COND TRUE \read(systemActive) [L65] FCALL processEnvironment() [L71] CALL __utac_acc__Specification3_spec__1() [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L271] CALL, EXPR isMethaneLevelCritical() [L442] int retValue_acc ; [L445] retValue_acc = methaneLevelCritical [L446] return (retValue_acc); [L271] RET, EXPR isMethaneLevelCritical() [L271] tmp = isMethaneLevelCritical() [L273] COND FALSE !(\read(tmp)) [L277] CALL, EXPR getWaterLevel() [L474] int retValue_acc ; [L477] retValue_acc = waterLevel [L478] return (retValue_acc); [L277] RET, EXPR getWaterLevel() [L277] tmp___0 = getWaterLevel() [L279] COND TRUE tmp___0 == 2 [L281] CALL, EXPR isPumpRunning() [L111] int retValue_acc ; [L114] retValue_acc = pumpRunning [L115] return (retValue_acc); [L281] RET, EXPR isPumpRunning() [L281] tmp___1 = isPumpRunning() [L283] COND FALSE !(\read(tmp___1)) [L287] CALL __automaton_fail() [L302] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 578 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 909 SDtfs, 958 SDslu, 1144 SDs, 0 SdLazy, 1888 SolverSat, 280 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 143 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...