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/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 21:10:27,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 21:10:27,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 21:10:27,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 21:10:27,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 21:10:27,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 21:10:27,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 21:10:27,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 21:10:27,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 21:10:27,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 21:10:27,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 21:10:27,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 21:10:27,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 21:10:27,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 21:10:27,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 21:10:27,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 21:10:27,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 21:10:27,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 21:10:27,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 21:10:27,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 21:10:27,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 21:10:27,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 21:10:27,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 21:10:27,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 21:10:27,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 21:10:27,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 21:10:27,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 21:10:27,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 21:10:27,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 21:10:27,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 21:10:27,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 21:10:27,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 21:10:27,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 21:10:27,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 21:10:27,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 21:10:27,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 21:10:27,781 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 [2019-09-03 21:10:27,795 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 21:10:27,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 21:10:27,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 21:10:27,796 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 21:10:27,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 21:10:27,797 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 21:10:27,797 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 21:10:27,797 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 21:10:27,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 21:10:27,798 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 21:10:27,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 21:10:27,799 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 21:10:27,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 21:10:27,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 21:10:27,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 21:10:27,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 21:10:27,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 21:10:27,800 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 21:10:27,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 21:10:27,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 21:10:27,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 21:10:27,801 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 21:10:27,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 21:10:27,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:10:27,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 21:10:27,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 21:10:27,802 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 21:10:27,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 21:10:27,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 21:10:27,802 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 21:10:27,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 21:10:27,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 21:10:27,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 21:10:27,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 21:10:27,847 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 21:10:27,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2019-09-03 21:10:27,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9727a35de/a59e405a54c449f0bed17d17c39a38fa/FLAG9522499f9 [2019-09-03 21:10:28,369 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 21:10:28,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2019-09-03 21:10:28,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9727a35de/a59e405a54c449f0bed17d17c39a38fa/FLAG9522499f9 [2019-09-03 21:10:28,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9727a35de/a59e405a54c449f0bed17d17c39a38fa [2019-09-03 21:10:28,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 21:10:28,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 21:10:28,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 21:10:28,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 21:10:28,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 21:10:28,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:10:28" (1/1) ... [2019-09-03 21:10:28,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40236e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:28, skipping insertion in model container [2019-09-03 21:10:28,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:10:28" (1/1) ... [2019-09-03 21:10:28,768 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 21:10:28,786 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 21:10:28,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:10:28,986 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 21:10:29,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:10:29,013 INFO L192 MainTranslator]: Completed translation [2019-09-03 21:10:29,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29 WrapperNode [2019-09-03 21:10:29,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 21:10:29,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 21:10:29,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 21:10:29,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 21:10:29,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (1/1) ... [2019-09-03 21:10:29,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 21:10:29,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 21:10:29,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 21:10:29,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 21:10:29,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (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 [2019-09-03 21:10:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 21:10:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 21:10:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 21:10:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 21:10:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 21:10:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 21:10:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 21:10:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 21:10:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 21:10:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 21:10:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 21:10:29,355 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 21:10:29,355 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 21:10:29,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:10:29 BoogieIcfgContainer [2019-09-03 21:10:29,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 21:10:29,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 21:10:29,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 21:10:29,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 21:10:29,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 09:10:28" (1/3) ... [2019-09-03 21:10:29,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67020312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:10:29, skipping insertion in model container [2019-09-03 21:10:29,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:29" (2/3) ... [2019-09-03 21:10:29,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67020312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:10:29, skipping insertion in model container [2019-09-03 21:10:29,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:10:29" (3/3) ... [2019-09-03 21:10:29,380 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2019-09-03 21:10:29,410 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 21:10:29,429 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 21:10:29,454 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 21:10:29,496 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 21:10:29,496 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 21:10:29,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 21:10:29,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 21:10:29,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 21:10:29,496 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 21:10:29,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 21:10:29,497 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 21:10:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-03 21:10:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:10:29,518 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:10:29,518 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:10:29,520 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:10:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash -156194248, now seen corresponding path program 1 times [2019-09-03 21:10:29,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:10:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:29,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:29,567 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:10:29,594 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:10:29,594 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:10:29,594 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 [2019-09-03 21:10:29,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:29,606 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:10:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:29,626 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:10:29,628 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:10:29,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:10:29,629 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 [2019-09-03 21:10:29,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:29,641 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:10:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:29,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-03 21:10:29,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:10:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:29,745 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:10:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:29,823 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:10:29,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-03 21:10:29,824 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:10:29,828 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:10:29,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:10:29,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-03 21:10:29,847 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2019-09-03 21:10:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:10:29,926 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-09-03 21:10:29,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 21:10:29,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 21:10:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:10:29,941 INFO L225 Difference]: With dead ends: 29 [2019-09-03 21:10:29,941 INFO L226 Difference]: Without dead ends: 24 [2019-09-03 21:10:29,946 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-03 21:10:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-03 21:10:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-09-03 21:10:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-03 21:10:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-03 21:10:29,983 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-03 21:10:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:10:29,983 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-03 21:10:29,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:10:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-03 21:10:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 21:10:29,985 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:10:29,985 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:10:29,985 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:10:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:29,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1377881770, now seen corresponding path program 1 times [2019-09-03 21:10:29,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:10:29,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:29,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:29,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:29,988 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:10:29,993 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:10:29,993 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:10:29,994 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 [2019-09-03 21:10:30,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:30,015 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:10:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:30,029 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-03 21:10:30,031 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [17], [23], [27], [30], [32], [35], [37], [38], [39], [40], [42], [43], [44] [2019-09-03 21:10:30,066 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:10:30,066 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:10:30,175 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:10:30,177 INFO L272 AbstractInterpreter]: Visited 16 different actions 21 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 9. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Never found a fixpoint. Largest state had 7 variables. [2019-09-03 21:10:30,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:30,181 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:10:30,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:10:30,182 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:10:30,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:30,197 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:10:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:30,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-03 21:10:30,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:10:30,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:10:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:30,317 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:10:30,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:10:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:30,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:10:30,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2019-09-03 21:10:30,457 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:10:30,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-03 21:10:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-03 21:10:30,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-09-03 21:10:30,460 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2019-09-03 21:10:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:10:30,526 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-03 21:10:30,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 21:10:30,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2019-09-03 21:10:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:10:30,527 INFO L225 Difference]: With dead ends: 20 [2019-09-03 21:10:30,528 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 21:10:30,529 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-09-03 21:10:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 21:10:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 21:10:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 21:10:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 21:10:30,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-03 21:10:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:10:30,530 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 21:10:30,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-03 21:10:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 21:10:30,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 21:10:30,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 09:10:30 BoogieIcfgContainer [2019-09-03 21:10:30,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 21:10:30,539 INFO L168 Benchmark]: Toolchain (without parser) took 1791.95 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 89.0 MB in the beginning and 88.9 MB in the end (delta: 139.0 kB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:30,540 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 134.2 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 21:10:30,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.71 ms. Allocated memory is still 134.2 MB. Free memory was 88.8 MB in the beginning and 79.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:30,542 INFO L168 Benchmark]: Boogie Preprocessor took 113.82 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 79.5 MB in the beginning and 177.9 MB in the end (delta: -98.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:30,544 INFO L168 Benchmark]: RCFGBuilder took 230.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 167.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:30,545 INFO L168 Benchmark]: TraceAbstraction took 1176.28 ms. Allocated memory is still 200.8 MB. Free memory was 166.5 MB in the beginning and 88.9 MB in the end (delta: 77.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:30,549 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 134.2 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.71 ms. Allocated memory is still 134.2 MB. Free memory was 88.8 MB in the beginning and 79.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.82 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 79.5 MB in the beginning and 177.9 MB in the end (delta: -98.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 167.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1176.28 ms. Allocated memory is still 200.8 MB. Free memory was 166.5 MB in the beginning and 88.9 MB in the end (delta: 77.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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, 21 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 92 SDs, 0 SdLazy, 45 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN 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, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 2752 SizeOfPredicates, 9 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...