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/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:18,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:18,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:18,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:26:18,586 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 [2019-09-20 13:26:18,601 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:18,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:18,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:18,602 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:18,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:18,603 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:18,603 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:18,603 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:18,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:18,604 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:18,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:18,604 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:18,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:18,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:18,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:18,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:18,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:18,606 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:18,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:18,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:18,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:18,607 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:18,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:18,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:18,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:18,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:18,608 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:18,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:18,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:18,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:18,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:18,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:18,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:18,653 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:18,654 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:18,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-20 13:26:18,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d729e435/12b97d269d5146cca7941f95d6697f91/FLAG77dc5bd22 [2019-09-20 13:26:19,122 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:19,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-20 13:26:19,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d729e435/12b97d269d5146cca7941f95d6697f91/FLAG77dc5bd22 [2019-09-20 13:26:19,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d729e435/12b97d269d5146cca7941f95d6697f91 [2019-09-20 13:26:19,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:19,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:19,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:19,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:19,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:19,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36edca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19, skipping insertion in model container [2019-09-20 13:26:19,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,573 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:19,594 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:19,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:19,785 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:19,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:19,815 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:19,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19 WrapperNode [2019-09-20 13:26:19,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:19,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:19,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:19,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:19,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (1/1) ... [2019-09-20 13:26:19,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:19,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:19,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:19,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:19,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (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 [2019-09-20 13:26:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:26:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:26:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:26:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:26:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:20,172 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:20,173 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:26:20,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:20 BoogieIcfgContainer [2019-09-20 13:26:20,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:20,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:20,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:20,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:20,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:19" (1/3) ... [2019-09-20 13:26:20,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e9c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:20, skipping insertion in model container [2019-09-20 13:26:20,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:19" (2/3) ... [2019-09-20 13:26:20,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e9c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:20, skipping insertion in model container [2019-09-20 13:26:20,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:20" (3/3) ... [2019-09-20 13:26:20,182 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2019-09-20 13:26:20,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:20,198 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:20,215 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:20,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:20,253 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:20,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:20,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:20,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:20,254 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:20,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:20,259 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-20 13:26:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:26:20,295 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:20,296 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:20,300 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-20 13:26:20,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:20,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:20,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:20,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:20,371 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:20,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:20,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:26:20,427 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:20,432 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:26:20,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:26:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:20,445 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-20 13:26:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:20,459 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-20 13:26:20,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:26:20,461 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-20 13:26:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:20,468 INFO L225 Difference]: With dead ends: 20 [2019-09-20 13:26:20,468 INFO L226 Difference]: Without dead ends: 15 [2019-09-20 13:26:20,470 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 [2019-09-20 13:26:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-20 13:26:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-20 13:26:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-20 13:26:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-20 13:26:20,501 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-20 13:26:20,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:20,501 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-20 13:26:20,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:26:20,502 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-20 13:26:20,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:26:20,502 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:20,503 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:20,503 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:20,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-20 13:26:20,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:20,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:20,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:20,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:20,506 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:20,512 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 13:26:20,512 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 13:26:20,512 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 [2019-09-20 13:26:20,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:20,551 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-20 13:26:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:20,568 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-20 13:26:20,569 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-20 13:26:20,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:20,570 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 [2019-09-20 13:26:20,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:20,589 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:26:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:20,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-20 13:26:20,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:26:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:20,676 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:26:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:20,732 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:20,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-09-20 13:26:20,733 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:20,733 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:26:20,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:26:20,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:26:20,734 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-09-20 13:26:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:20,793 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-20 13:26:20,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:26:20,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-20 13:26:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:20,795 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:26:20,795 INFO L226 Difference]: Without dead ends: 22 [2019-09-20 13:26:20,796 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:26:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-20 13:26:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-20 13:26:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-20 13:26:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-20 13:26:20,803 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-20 13:26:20,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:20,803 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-20 13:26:20,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:26:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-20 13:26:20,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:26:20,805 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:20,805 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:20,805 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:20,806 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-09-20 13:26:20,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:20,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:20,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:20,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:20,809 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:20,814 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 13:26:20,814 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 13:26:20,814 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) [2019-09-20 13:26:20,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:20,834 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-20 13:26:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:20,849 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-20 13:26:20,851 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [26], [29], [31], [34], [36], [37], [38], [39], [41], [42] [2019-09-20 13:26:20,881 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:26:20,881 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:26:21,165 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:26:21,169 INFO L272 AbstractInterpreter]: Visited 14 different actions 59 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Performed 101 root evaluator evaluations with a maximum evaluation depth of 10. Performed 101 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-09-20 13:26:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:21,173 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:26:21,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:21,173 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 [2019-09-20 13:26:21,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:21,196 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:26:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:21,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-20 13:26:21,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:26:21,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:21,366 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:26:21,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:21,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:26:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:21,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:26:21,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-20 13:26:21,541 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:26:21,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:26:21,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:26:21,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:26:21,543 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 13 states. [2019-09-20 13:26:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:21,658 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-09-20 13:26:21,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:26:21,659 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2019-09-20 13:26:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:21,659 INFO L225 Difference]: With dead ends: 24 [2019-09-20 13:26:21,659 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:21,662 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:26:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:21,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-20 13:26:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:21,664 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:21,664 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:26:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:21,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:21,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:21 BoogieIcfgContainer [2019-09-20 13:26:21,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:21,673 INFO L168 Benchmark]: Toolchain (without parser) took 2116.84 ms. Allocated memory was 137.9 MB in the beginning and 217.1 MB in the end (delta: 79.2 MB). Free memory was 85.1 MB in the beginning and 169.9 MB in the end (delta: -84.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:26:21,674 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:26:21,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.26 ms. Allocated memory is still 137.9 MB. Free memory was 84.9 MB in the beginning and 75.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:21,678 INFO L168 Benchmark]: Boogie Preprocessor took 129.74 ms. Allocated memory was 137.9 MB in the beginning and 196.6 MB in the end (delta: 58.7 MB). Free memory was 75.0 MB in the beginning and 174.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:21,679 INFO L168 Benchmark]: RCFGBuilder took 227.84 ms. Allocated memory is still 196.6 MB. Free memory was 174.0 MB in the beginning and 162.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:21,680 INFO L168 Benchmark]: TraceAbstraction took 1494.18 ms. Allocated memory was 196.6 MB in the beginning and 217.1 MB in the end (delta: 20.4 MB). Free memory was 162.7 MB in the beginning and 169.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:21,689 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 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.26 ms. Allocated memory is still 137.9 MB. Free memory was 84.9 MB in the beginning and 75.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.74 ms. Allocated memory was 137.9 MB in the beginning and 196.6 MB in the end (delta: 58.7 MB). Free memory was 75.0 MB in the beginning and 174.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.84 ms. Allocated memory is still 196.6 MB. Free memory was 174.0 MB in the beginning and 162.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1494.18 ms. Allocated memory was 196.6 MB in the beginning and 217.1 MB in the end (delta: 20.4 MB). Free memory was 162.7 MB in the beginning and 169.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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, 20 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 22 SDslu, 104 SDs, 0 SdLazy, 62 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 2 QuantifiedInterpolants, 3381 SizeOfPredicates, 7 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...