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-efa34d5 [2019-09-16 17:03:48,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:03:48,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:03:48,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:03:48,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:03:48,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:03:48,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:03:48,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:03:48,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:03:48,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:03:48,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:03:48,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:03:48,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:03:48,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:03:48,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:03:48,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:03:48,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:03:48,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:03:48,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:03:48,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:03:48,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:03:48,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:03:48,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:03:48,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:03:48,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:03:48,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:03:48,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:03:48,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:03:48,541 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 [2019-09-16 17:03:48,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:03:48,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:03:48,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:03:48,557 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:03:48,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:03:48,558 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:03:48,558 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:03:48,558 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:03:48,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:03:48,559 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:03:48,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:03:48,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:03:48,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:03:48,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:03:48,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:03:48,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:03:48,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:03:48,561 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:03:48,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:03:48,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:03:48,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:03:48,562 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:03:48,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:03:48,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:48,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:03:48,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:03:48,563 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:03:48,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:03:48,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:03:48,563 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:03:48,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:03:48,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:03:48,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:03:48,609 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:03:48,609 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:03:48,610 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2019-09-16 17:03:48,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ac4d5ba0/a62e919e916a4bc897a96a3db1ba98ac/FLAGec96e4226 [2019-09-16 17:03:49,164 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:03:49,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2019-09-16 17:03:49,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ac4d5ba0/a62e919e916a4bc897a96a3db1ba98ac/FLAGec96e4226 [2019-09-16 17:03:49,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ac4d5ba0/a62e919e916a4bc897a96a3db1ba98ac [2019-09-16 17:03:49,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:03:49,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:03:49,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:49,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:03:49,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:03:49,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:49" (1/1) ... [2019-09-16 17:03:49,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475fb3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:49, skipping insertion in model container [2019-09-16 17:03:49,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:49" (1/1) ... [2019-09-16 17:03:49,574 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:03:49,629 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:03:50,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:50,069 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:03:50,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:50,177 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:03:50,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50 WrapperNode [2019-09-16 17:03:50,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:50,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:03:50,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:03:50,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:03:50,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (1/1) ... [2019-09-16 17:03:50,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:03:50,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:03:50,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:03:50,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:03:50,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (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 [2019-09-16 17:03:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:03:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:03:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2019-09-16 17:03:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2019-09-16 17:03:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2019-09-16 17:03:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2019-09-16 17:03:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2019-09-16 17:03:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2019-09-16 17:03:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2019-09-16 17:03:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2019-09-16 17:03:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:03:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:03:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:03:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:03:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2019-09-16 17:03:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2019-09-16 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2019-09-16 17:03:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-16 17:03:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:03:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:03:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:03:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:03:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:03:50,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:03:50,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:03:51,187 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:03:51,188 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-16 17:03:51,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:51 BoogieIcfgContainer [2019-09-16 17:03:51,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:03:51,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:03:51,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:03:51,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:03:51,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:03:49" (1/3) ... [2019-09-16 17:03:51,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0d577c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:51, skipping insertion in model container [2019-09-16 17:03:51,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:50" (2/3) ... [2019-09-16 17:03:51,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0d577c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:51, skipping insertion in model container [2019-09-16 17:03:51,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:51" (3/3) ... [2019-09-16 17:03:51,199 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2019-09-16 17:03:51,209 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:03:51,218 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:03:51,235 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:03:51,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:03:51,264 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:03:51,264 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:03:51,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:03:51,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:03:51,265 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:03:51,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:03:51,265 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:03:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2019-09-16 17:03:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-16 17:03:51,302 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:51,303 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:51,305 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1024985055, now seen corresponding path program 1 times [2019-09-16 17:03:51,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:51,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:51,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:51,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:51,376 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:51,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:51,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:03:51,598 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:51,604 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:03:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:03:51,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:51,623 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 2 states. [2019-09-16 17:03:51,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:51,652 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2019-09-16 17:03:51,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:03:51,653 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-09-16 17:03:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:51,667 INFO L225 Difference]: With dead ends: 128 [2019-09-16 17:03:51,667 INFO L226 Difference]: Without dead ends: 119 [2019-09-16 17:03:51,669 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-09-16 17:03:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-09-16 17:03:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-09-16 17:03:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2019-09-16 17:03:51,723 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2019-09-16 17:03:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:51,723 INFO L475 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2019-09-16 17:03:51,724 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:03:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2019-09-16 17:03:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-16 17:03:51,727 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:51,728 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:51,728 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash 29519587, now seen corresponding path program 1 times [2019-09-16 17:03:51,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:51,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:51,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:51,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:51,732 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:51,810 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 17:03:51,810 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 17:03:51,810 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 [2019-09-16 17:03:51,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:51,875 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-16 17:03:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:51,929 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-16 17:03:51,931 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-16 17:03:51,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:03:51,932 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 [2019-09-16 17:03:51,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:51,999 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-16 17:03:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:52,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-16 17:03:52,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 17:03:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:52,226 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-16 17:03:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:52,280 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:52,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-16 17:03:52,281 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:52,282 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:03:52,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:03:52,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:03:52,283 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 4 states. [2019-09-16 17:03:52,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:52,320 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2019-09-16 17:03:52,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:03:52,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-09-16 17:03:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:52,321 INFO L225 Difference]: With dead ends: 117 [2019-09-16 17:03:52,321 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:03:52,323 INFO L636 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 [2019-09-16 17:03:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:03:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:03:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:03:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:03:52,324 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-09-16 17:03:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:52,324 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:03:52,324 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:03:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:03:52,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:03:52,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:03:52 BoogieIcfgContainer [2019-09-16 17:03:52,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:03:52,334 INFO L168 Benchmark]: Toolchain (without parser) took 2778.16 ms. Allocated memory was 137.4 MB in the beginning and 217.1 MB in the end (delta: 79.7 MB). Free memory was 84.1 MB in the beginning and 107.9 MB in the end (delta: -23.8 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:52,336 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:03:52,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.16 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 83.9 MB in the beginning and 166.8 MB in the end (delta: -82.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:52,338 INFO L168 Benchmark]: Boogie Preprocessor took 86.11 ms. Allocated memory is still 198.2 MB. Free memory was 166.8 MB in the beginning and 162.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:52,340 INFO L168 Benchmark]: RCFGBuilder took 924.40 ms. Allocated memory is still 198.2 MB. Free memory was 162.8 MB in the beginning and 103.2 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:52,341 INFO L168 Benchmark]: TraceAbstraction took 1140.76 ms. Allocated memory was 198.2 MB in the beginning and 217.1 MB in the end (delta: 18.9 MB). Free memory was 103.2 MB in the beginning and 107.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:52,351 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 621.16 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 83.9 MB in the beginning and 166.8 MB in the end (delta: -82.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.11 ms. Allocated memory is still 198.2 MB. Free memory was 166.8 MB in the beginning and 162.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 924.40 ms. Allocated memory is still 198.2 MB. Free memory was 162.8 MB in the beginning and 103.2 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1140.76 ms. Allocated memory was 198.2 MB in the beginning and 217.1 MB in the end (delta: 18.9 MB). Free memory was 103.2 MB in the beginning and 107.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 14.2 MB. 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, 0.1s 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...