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/loop-industry-pattern/ofuf_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:09:08,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:09:08,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:09:08,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:09:08,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:09:08,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:09:08,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:09:08,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:09:08,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:09:08,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:09:08,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:09:08,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:09:08,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:09:08,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:09:08,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:09:08,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:09:08,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:09:08,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:09:08,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:09:08,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:09:08,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:09:08,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:09:08,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:09:08,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:09:08,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 13:09:08,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:09:08,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:09:08,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:09:08,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:09:08,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:09:08,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:09:08,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:09:08,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:09:08,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:09:08,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:09:08,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:09:08,986 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 [2019-09-05 13:09:09,000 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:09:09,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:09:09,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:09:09,001 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:09:09,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:09:09,002 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:09:09,002 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:09:09,002 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:09:09,002 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:09:09,003 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:09:09,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:09:09,003 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:09:09,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:09:09,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:09:09,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:09:09,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:09:09,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:09:09,004 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:09:09,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:09:09,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:09:09,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:09:09,005 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:09:09,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:09:09,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:09:09,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:09:09,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:09:09,006 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:09:09,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:09:09,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:09:09,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:09:09,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:09:09,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:09:09,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:09:09,055 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:09:09,056 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:09:09,056 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2019-09-05 13:09:09,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c712127f1/046535ae81e340d59bb0f58f95f3db2a/FLAG065f3c679 [2019-09-05 13:09:09,665 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:09:09,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2019-09-05 13:09:09,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c712127f1/046535ae81e340d59bb0f58f95f3db2a/FLAG065f3c679 [2019-09-05 13:09:09,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c712127f1/046535ae81e340d59bb0f58f95f3db2a [2019-09-05 13:09:09,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:09:09,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:09:09,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:09:09,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:09:09,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:09:10,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:09:09" (1/1) ... [2019-09-05 13:09:10,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17003e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10, skipping insertion in model container [2019-09-05 13:09:10,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:09:09" (1/1) ... [2019-09-05 13:09:10,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:09:10,063 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:09:10,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:09:10,437 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:09:10,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:09:10,538 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:09:10,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10 WrapperNode [2019-09-05 13:09:10,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:09:10,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:09:10,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:09:10,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:09:10,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (1/1) ... [2019-09-05 13:09:10,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:09:10,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:09:10,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:09:10,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:09:10,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (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 [2019-09-05 13:09:10,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:09:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:09:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2019-09-05 13:09:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2019-09-05 13:09:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2019-09-05 13:09:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2019-09-05 13:09:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2019-09-05 13:09:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2019-09-05 13:09:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2019-09-05 13:09:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2019-09-05 13:09:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:09:10,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:09:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:09:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:09:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-05 13:09:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2019-09-05 13:09:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-09-05 13:09:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-05 13:09:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2019-09-05 13:09:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2019-09-05 13:09:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2019-09-05 13:09:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2019-09-05 13:09:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-05 13:09:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2019-09-05 13:09:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2019-09-05 13:09:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-05 13:09:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:09:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 13:09:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-05 13:09:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-05 13:09:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:09:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-05 13:09:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:09:11,768 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:09:11,768 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-05 13:09:11,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:09:11 BoogieIcfgContainer [2019-09-05 13:09:11,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:09:11,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:09:11,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:09:11,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:09:11,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:09:09" (1/3) ... [2019-09-05 13:09:11,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdf206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:09:11, skipping insertion in model container [2019-09-05 13:09:11,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:10" (2/3) ... [2019-09-05 13:09:11,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdf206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:09:11, skipping insertion in model container [2019-09-05 13:09:11,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:09:11" (3/3) ... [2019-09-05 13:09:11,778 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2019-09-05 13:09:11,788 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:09:11,797 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:09:11,814 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:09:11,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:09:11,843 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:09:11,843 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:09:11,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:09:11,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:09:11,844 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:09:11,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:09:11,844 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:09:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2019-09-05 13:09:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-05 13:09:11,881 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:09:11,882 INFO L399 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] [2019-09-05 13:09:11,884 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:09:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:09:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1024985055, now seen corresponding path program 1 times [2019-09-05 13:09:11,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:09:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:11,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:11,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:11,946 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:09:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:09:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:09:12,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:09:12,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 13:09:12,187 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:09:12,193 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:09:12,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:09:12,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:09:12,212 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 2 states. [2019-09-05 13:09:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:09:12,258 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2019-09-05 13:09:12,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:09:12,260 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-09-05 13:09:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:09:12,273 INFO L225 Difference]: With dead ends: 128 [2019-09-05 13:09:12,273 INFO L226 Difference]: Without dead ends: 119 [2019-09-05 13:09:12,275 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 [2019-09-05 13:09:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-09-05 13:09:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-09-05 13:09:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-09-05 13:09:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2019-09-05 13:09:12,326 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2019-09-05 13:09:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:09:12,327 INFO L475 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2019-09-05 13:09:12,327 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:09:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2019-09-05 13:09:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-05 13:09:12,332 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:09:12,332 INFO L399 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] [2019-09-05 13:09:12,333 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:09:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:09:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash 29519587, now seen corresponding path program 1 times [2019-09-05 13:09:12,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:09:12,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:12,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:12,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:12,334 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:09:12,410 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:09:12,410 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:09:12,411 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:09:12,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:12,424 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:09:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:09:12,501 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:09:12,501 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:09:12,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:09:12,502 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:09:12,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:12,515 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:09:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:09:12,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-05 13:09:12,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:09:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:09:12,721 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:09:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:09:12,791 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:09:12,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-05 13:09:12,791 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:09:12,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 13:09:12,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 13:09:12,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 13:09:12,793 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 4 states. [2019-09-05 13:09:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:09:12,850 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2019-09-05 13:09:12,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 13:09:12,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-09-05 13:09:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:09:12,852 INFO L225 Difference]: With dead ends: 117 [2019-09-05 13:09:12,852 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:09:12,853 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 13:09:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:09:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:09:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:09:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:09:12,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-09-05 13:09:12,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:09:12,854 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:09:12,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 13:09:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:09:12,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:09:12,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:09:12 BoogieIcfgContainer [2019-09-05 13:09:12,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:09:12,863 INFO L168 Benchmark]: Toolchain (without parser) took 2869.39 ms. Allocated memory was 137.4 MB in the beginning and 217.1 MB in the end (delta: 79.7 MB). Free memory was 84.0 MB in the beginning and 132.6 MB in the end (delta: -48.5 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:12,864 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:09:12,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.49 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 83.8 MB in the beginning and 167.4 MB in the end (delta: -83.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:12,866 INFO L168 Benchmark]: Boogie Preprocessor took 103.25 ms. Allocated memory is still 198.2 MB. Free memory was 167.4 MB in the beginning and 163.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:12,867 INFO L168 Benchmark]: RCFGBuilder took 1127.36 ms. Allocated memory is still 198.2 MB. Free memory was 163.1 MB in the beginning and 103.9 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:12,868 INFO L168 Benchmark]: TraceAbstraction took 1089.73 ms. Allocated memory was 198.2 MB in the beginning and 217.1 MB in the end (delta: 18.9 MB). Free memory was 103.9 MB in the beginning and 132.6 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 13:09:12,872 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 103.4 MB in the beginning and 103.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 544.49 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 83.8 MB in the beginning and 167.4 MB in the end (delta: -83.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.25 ms. Allocated memory is still 198.2 MB. Free memory was 167.4 MB in the beginning and 163.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1127.36 ms. Allocated memory is still 198.2 MB. Free memory was 163.1 MB in the beginning and 103.9 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1089.73 ms. Allocated memory was 198.2 MB in the beginning and 217.1 MB in the end (delta: 18.9 MB). Free memory was 103.9 MB in the beginning and 132.6 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 458]: 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 12 procedures, 128 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 335 SDtfs, 5 SDslu, 317 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4636 SizeOfPredicates, 5 NumberOfNonLiveVariables, 532 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...