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/array-multidimensional/rev-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:36:01,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:36:01,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:36:01,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:36:01,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:36:01,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:36:01,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:36:01,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:36:01,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:36:01,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:36:01,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:36:01,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:36:01,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:36:01,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:36:01,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:36:01,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:36:01,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:36:01,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:36:01,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:36:01,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:36:01,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:36:01,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:36:01,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:36:01,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:36:02,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:36:02,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:36:02,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:36:02,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:36:02,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:36:02,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:36:02,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:36:02,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:36:02,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:36:02,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:36:02,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:36:02,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:36:02,011 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 [2019-09-09 05:36:02,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:36:02,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:36:02,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:36:02,027 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:36:02,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:36:02,028 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:36:02,028 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:36:02,028 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:36:02,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:36:02,028 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:36:02,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:36:02,029 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:36:02,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:36:02,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:36:02,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:36:02,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:36:02,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:36:02,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:36:02,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:36:02,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:36:02,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:36:02,031 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:36:02,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:36:02,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:36:02,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:36:02,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:36:02,032 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:36:02,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:36:02,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:36:02,033 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:36:02,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:36:02,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:36:02,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:36:02,082 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:36:02,083 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:36:02,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/rev-2-n-u.c [2019-09-09 05:36:02,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e690362/7b93d5a37b6e48d4b17d5e780f828b30/FLAG3ff7147e2 [2019-09-09 05:36:02,604 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:36:02,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/rev-2-n-u.c [2019-09-09 05:36:02,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e690362/7b93d5a37b6e48d4b17d5e780f828b30/FLAG3ff7147e2 [2019-09-09 05:36:02,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e690362/7b93d5a37b6e48d4b17d5e780f828b30 [2019-09-09 05:36:02,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:36:02,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:36:02,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:36:02,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:36:03,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:36:03,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:36:02" (1/1) ... [2019-09-09 05:36:03,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e607a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03, skipping insertion in model container [2019-09-09 05:36:03,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:36:02" (1/1) ... [2019-09-09 05:36:03,015 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:36:03,032 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:36:03,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:36:03,182 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:36:03,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:36:03,227 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:36:03,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03 WrapperNode [2019-09-09 05:36:03,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:36:03,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:36:03,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:36:03,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:36:03,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (1/1) ... [2019-09-09 05:36:03,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:36:03,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:36:03,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:36:03,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:36:03,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (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 [2019-09-09 05:36:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:36:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:36:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:36:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:36:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:36:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:36:03,684 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:36:03,684 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-09 05:36:03,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:36:03 BoogieIcfgContainer [2019-09-09 05:36:03,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:36:03,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:36:03,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:36:03,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:36:03,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:36:02" (1/3) ... [2019-09-09 05:36:03,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1908e5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:36:03, skipping insertion in model container [2019-09-09 05:36:03,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:36:03" (2/3) ... [2019-09-09 05:36:03,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1908e5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:36:03, skipping insertion in model container [2019-09-09 05:36:03,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:36:03" (3/3) ... [2019-09-09 05:36:03,694 INFO L109 eAbstractionObserver]: Analyzing ICFG rev-2-n-u.c [2019-09-09 05:36:03,704 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:36:03,712 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:36:03,730 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:36:03,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:36:03,787 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:36:03,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:36:03,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:36:03,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:36:03,788 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:36:03,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:36:03,789 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:36:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-09 05:36:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-09 05:36:03,823 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:36:03,839 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:36:03,842 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:36:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:36:03,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1035913628, now seen corresponding path program 1 times [2019-09-09 05:36:03,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:36:03,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:36:03,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:36:03,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:36:03,907 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:36:03,944 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-09 05:36:03,945 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-09 05:36:03,945 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 [2019-09-09 05:36:03,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:36:03,961 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-09 05:36:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:36:03,993 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-09 05:36:03,995 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-09 05:36:03,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:36:03,995 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 [2019-09-09 05:36:04,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:36:04,008 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-09 05:36:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:36:04,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-09 05:36:04,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-09 05:36:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:36:04,093 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-09 05:36:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:36:04,134 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:36:04,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-09-09 05:36:04,135 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:36:04,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:36:04,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:36:04,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:36:04,159 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2019-09-09 05:36:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:36:04,233 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-09-09 05:36:04,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:36:04,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-09 05:36:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:36:04,246 INFO L225 Difference]: With dead ends: 33 [2019-09-09 05:36:04,246 INFO L226 Difference]: Without dead ends: 28 [2019-09-09 05:36:04,248 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:36:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-09 05:36:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-09-09 05:36:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-09 05:36:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-09-09 05:36:04,295 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-09-09 05:36:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:36:04,296 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-09-09 05:36:04,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:36:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-09-09 05:36:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-09 05:36:04,298 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:36:04,298 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:36:04,299 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:36:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:36:04,300 INFO L82 PathProgramCache]: Analyzing trace with hash 573516244, now seen corresponding path program 1 times [2019-09-09 05:36:04,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:36:04,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:36:04,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:36:04,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:36:04,302 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:36:04,310 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-09 05:36:04,310 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-09 05:36:04,310 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-09 05:36:04,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:36:04,335 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-09 05:36:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Exception during sending of exit command (exit): Stream closed [2019-09-09 05:36:04,355 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-09 05:36:04,358 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [27], [31], [38], [57], [66], [75], [87], [90], [92], [98], [99], [100], [102] [2019-09-09 05:36:04,411 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:36:04,412 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:36:04,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:36:04,525 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 18 root evaluator evaluations with a maximum evaluation depth of 0. Performed 18 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 23 variables. [2019-09-09 05:36:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:36:04,529 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:36:04,566 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:36:04,566 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:36:04,568 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-09 05:36:04,568 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:36:04,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:36:04,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:36:04,569 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:36:04,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:36:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:36:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:36:04,571 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 2 states. [2019-09-09 05:36:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:36:04,572 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:36:04,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:36:04,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-09 05:36:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:36:04,573 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:36:04,573 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:36:04,574 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:36:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:36:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:36:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:36:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:36:04,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-09 05:36:04,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:36:04,575 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:36:04,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:36:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:36:04,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:36:04,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:36:04 BoogieIcfgContainer [2019-09-09 05:36:04,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:36:04,587 INFO L168 Benchmark]: Toolchain (without parser) took 1589.07 ms. Allocated memory was 134.2 MB in the beginning and 202.4 MB in the end (delta: 68.2 MB). Free memory was 89.9 MB in the beginning and 112.8 MB in the end (delta: -22.9 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:36:04,589 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:36:04,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.36 ms. Allocated memory is still 134.2 MB. Free memory was 89.5 MB in the beginning and 79.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:36:04,593 INFO L168 Benchmark]: Boogie Preprocessor took 146.55 ms. Allocated memory was 134.2 MB in the beginning and 202.4 MB in the end (delta: 68.2 MB). Free memory was 79.2 MB in the beginning and 178.2 MB in the end (delta: -98.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:36:04,594 INFO L168 Benchmark]: RCFGBuilder took 310.92 ms. Allocated memory is still 202.4 MB. Free memory was 178.2 MB in the beginning and 162.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:36:04,596 INFO L168 Benchmark]: TraceAbstraction took 895.79 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 112.8 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:36:04,602 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.36 ms. Allocated memory is still 134.2 MB. Free memory was 89.5 MB in the beginning and 79.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.55 ms. Allocated memory was 134.2 MB in the beginning and 202.4 MB in the end (delta: 68.2 MB). Free memory was 79.2 MB in the beginning and 178.2 MB in the end (delta: -98.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.92 ms. Allocated memory is still 202.4 MB. Free memory was 178.2 MB in the beginning and 162.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 895.79 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 112.8 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 4 procedures, 30 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 3 SDslu, 20 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.875 AbsIntWeakeningRatio, 1.1666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 2 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...