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_4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:14:15,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:14:15,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:14:15,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:14:15,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:14:15,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:14:15,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:14:15,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:14:15,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:14:15,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:14:15,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:14:15,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:14:15,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:14:15,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:14:15,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:14:15,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:14:15,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:14:15,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:14:15,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:14:15,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:14:15,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:14:15,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:14:15,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:14:15,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:14:15,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 02:14:15,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:14:15,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:14:15,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:14:15,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:14:15,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:14:15,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:14:15,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:14:15,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:14:15,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:14:15,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:14:15,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:14:15,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:14:15,607 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:14:15,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:14:15,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:14:15,608 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:14:15,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:14:15,609 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:14:15,609 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:14:15,609 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:14:15,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:14:15,610 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:14:15,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:14:15,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:14:15,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:14:15,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:14:15,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:14:15,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:14:15,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:14:15,613 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:14:15,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:14:15,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:14:15,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:14:15,614 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:14:15,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:14:15,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:14:15,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:14:15,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:14:15,615 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:14:15,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:14:15,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:14:15,616 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:14:15,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:14:15,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:14:15,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:14:15,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:14:15,668 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:14:15,669 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2019-09-10 02:14:15,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d975cea/74828be378ac4ad19ab33e170e6b1f39/FLAG64fce90e1 [2019-09-10 02:14:16,244 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:14:16,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2019-09-10 02:14:16,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d975cea/74828be378ac4ad19ab33e170e6b1f39/FLAG64fce90e1 [2019-09-10 02:14:16,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d975cea/74828be378ac4ad19ab33e170e6b1f39 [2019-09-10 02:14:16,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:14:16,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:14:16,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:14:16,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:14:16,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:14:16,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:14:16" (1/1) ... [2019-09-10 02:14:16,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cccf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:16, skipping insertion in model container [2019-09-10 02:14:16,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:14:16" (1/1) ... [2019-09-10 02:14:16,560 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:14:16,624 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:14:17,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:14:17,047 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:14:17,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:14:17,143 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:14:17,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17 WrapperNode [2019-09-10 02:14:17,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:14:17,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:14:17,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:14:17,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:14:17,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... [2019-09-10 02:14:17,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:14:17,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:14:17,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:14:17,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:14:17,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:14:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:14:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:14:17,300 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2019-09-10 02:14:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2019-09-10 02:14:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2019-09-10 02:14:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2019-09-10 02:14:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2019-09-10 02:14:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2019-09-10 02:14:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2019-09-10 02:14:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2019-09-10 02:14:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:14:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 02:14:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:14:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 02:14:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 02:14:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2019-09-10 02:14:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-09-10 02:14:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2019-09-10 02:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2019-09-10 02:14:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-10 02:14:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:14:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:14:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:14:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:14:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:14:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-10 02:14:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:14:18,129 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:14:18,129 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-10 02:14:18,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:14:18 BoogieIcfgContainer [2019-09-10 02:14:18,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:14:18,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:14:18,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:14:18,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:14:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:14:16" (1/3) ... [2019-09-10 02:14:18,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30622b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:14:18, skipping insertion in model container [2019-09-10 02:14:18,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:14:17" (2/3) ... [2019-09-10 02:14:18,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30622b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:14:18, skipping insertion in model container [2019-09-10 02:14:18,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:14:18" (3/3) ... [2019-09-10 02:14:18,139 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_4.c [2019-09-10 02:14:18,149 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:14:18,157 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:14:18,174 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:14:18,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:14:18,200 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:14:18,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:14:18,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:14:18,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:14:18,201 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:14:18,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:14:18,202 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:14:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2019-09-10 02:14:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 02:14:18,237 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:14:18,238 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, 1, 1, 1, 1] [2019-09-10 02:14:18,240 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:14:18,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:14:18,246 INFO L82 PathProgramCache]: Analyzing trace with hash 428561486, now seen corresponding path program 1 times [2019-09-10 02:14:18,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:14:18,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:14:18,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:14:18,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:14:18,299 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:14:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:14:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:14:18,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:14:18,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:14:18,594 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:14:18,599 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:14:18,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:14:18,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:14:18,615 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2019-09-10 02:14:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:14:18,641 INFO L93 Difference]: Finished difference Result 129 states and 177 transitions. [2019-09-10 02:14:18,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:14:18,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2019-09-10 02:14:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:14:18,653 INFO L225 Difference]: With dead ends: 129 [2019-09-10 02:14:18,653 INFO L226 Difference]: Without dead ends: 120 [2019-09-10 02:14:18,655 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:14:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-09-10 02:14:18,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-09-10 02:14:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-10 02:14:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 167 transitions. [2019-09-10 02:14:18,705 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 167 transitions. Word has length 43 [2019-09-10 02:14:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:14:18,706 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 167 transitions. [2019-09-10 02:14:18,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:14:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 167 transitions. [2019-09-10 02:14:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 02:14:18,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:14:18,710 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:14:18,711 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:14:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:14:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash -983769302, now seen corresponding path program 1 times [2019-09-10 02:14:18,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:14:18,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:14:18,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:14:18,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:14:18,715 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:14:18,799 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 02:14:18,799 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 02:14:18,799 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) [2019-09-10 02:14:18,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:14:18,817 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 02:14:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 02:14:18,895 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2019-09-10 02:14:18,897 INFO L207 CegarAbsIntRunner]: [114], [118], [121], [126], [131], [146], [147], [150], [152], [158], [180], [186], [251], [253], [254], [255], [259], [262], [266], [268], [270], [272], [275], [330], [331], [335], [340], [342], [343], [346], [348], [354], [358], [360], [361], [362], [374], [376], [377], [378], [379], [380], [382], [383], [384] [2019-09-10 02:14:18,935 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:14:18,936 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:14:19,006 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:14:19,008 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 56 root evaluator evaluations with a maximum evaluation depth of 0. Performed 56 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 80 variables. [2019-09-10 02:14:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:14:19,011 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:14:19,052 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:14:19,052 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:14:19,055 INFO L420 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-09-10 02:14:19,056 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:14:19,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:14:19,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:14:19,057 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:14:19,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:14:19,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:14:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:14:19,059 INFO L87 Difference]: Start difference. First operand 120 states and 167 transitions. Second operand 2 states. [2019-09-10 02:14:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:14:19,060 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:14:19,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:14:19,060 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 47 [2019-09-10 02:14:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:14:19,060 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:14:19,060 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:14:19,061 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:14:19,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:14:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:14:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:14:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:14:19,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-09-10 02:14:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:14:19,062 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:14:19,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:14:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:14:19,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:14:19,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:14:19 BoogieIcfgContainer [2019-09-10 02:14:19,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:14:19,069 INFO L168 Benchmark]: Toolchain (without parser) took 2527.35 ms. Allocated memory was 135.3 MB in the beginning and 230.2 MB in the end (delta: 94.9 MB). Free memory was 89.3 MB in the beginning and 161.4 MB in the end (delta: -72.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:14:19,070 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:14:19,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.72 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 89.1 MB in the beginning and 169.9 MB in the end (delta: -80.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:14:19,072 INFO L168 Benchmark]: Boogie Preprocessor took 86.81 ms. Allocated memory is still 201.3 MB. Free memory was 169.9 MB in the beginning and 165.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:14:19,073 INFO L168 Benchmark]: RCFGBuilder took 898.98 ms. Allocated memory is still 201.3 MB. Free memory was 165.5 MB in the beginning and 105.8 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:14:19,074 INFO L168 Benchmark]: TraceAbstraction took 935.05 ms. Allocated memory was 201.3 MB in the beginning and 230.2 MB in the end (delta: 28.8 MB). Free memory was 105.2 MB in the beginning and 161.4 MB in the end (delta: -56.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 02:14:19,078 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 602.72 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 89.1 MB in the beginning and 169.9 MB in the end (delta: -80.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.81 ms. Allocated memory is still 201.3 MB. Free memory was 169.9 MB in the beginning and 165.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 898.98 ms. Allocated memory is still 201.3 MB. Free memory was 165.5 MB in the beginning and 105.8 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 935.05 ms. Allocated memory was 201.3 MB in the beginning and 230.2 MB in the end (delta: 28.8 MB). Free memory was 105.2 MB in the beginning and 161.4 MB in the end (delta: -56.2 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, 129 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 178 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 3.130434782608696 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...