/usr/bin/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:24:41,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:24:41,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:24:41,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:24:41,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:24:41,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:24:41,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:24:41,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:24:41,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:24:41,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:24:41,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:24:41,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:24:41,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:24:41,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:24:41,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:24:41,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:24:41,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:24:41,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:24:41,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:24:41,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:24:41,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:24:41,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:24:41,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:24:41,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:24:41,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:24:41,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:24:41,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:24:41,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:24:41,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:24:41,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:24:41,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:24:41,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:24:41,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:24:41,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:24:41,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:24:41,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:24:41,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:24:41,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:24:41,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:24:41,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:24:41,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:24:41,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:24:41,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:24:41,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:24:41,970 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:24:41,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:24:41,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:24:41,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:24:41,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:24:41,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:24:41,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:24:41,972 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:24:42,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:24:42,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:24:42,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:24:42,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:24:42,427 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:24:42,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-09-04 23:24:42,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddcb56fe9/fd4c9f0740994de49231e697391ef977/FLAGe6459e88c [2020-09-04 23:24:43,007 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:24:43,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-09-04 23:24:43,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddcb56fe9/fd4c9f0740994de49231e697391ef977/FLAGe6459e88c [2020-09-04 23:24:43,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddcb56fe9/fd4c9f0740994de49231e697391ef977 [2020-09-04 23:24:43,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:24:43,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:24:43,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:24:43,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:24:43,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:24:43,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632a6d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43, skipping insertion in model container [2020-09-04 23:24:43,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:24:43,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:24:43,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:24:43,710 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:24:43,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:24:43,749 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:24:43,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43 WrapperNode [2020-09-04 23:24:43,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:24:43,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:24:43,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:24:43,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:24:43,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... [2020-09-04 23:24:43,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:24:43,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:24:43,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:24:43,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:24:43,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:24:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:24:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:24:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:24:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:24:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:24:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:24:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:24:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:24:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:24:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:24:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:24:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:24:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:24:44,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:24:44,253 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:24:44,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:24:44 BoogieIcfgContainer [2020-09-04 23:24:44,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:24:44,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:24:44,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:24:44,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:24:44,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:24:43" (1/3) ... [2020-09-04 23:24:44,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d6209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:24:44, skipping insertion in model container [2020-09-04 23:24:44,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:24:43" (2/3) ... [2020-09-04 23:24:44,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d6209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:24:44, skipping insertion in model container [2020-09-04 23:24:44,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:24:44" (3/3) ... [2020-09-04 23:24:44,272 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2020-09-04 23:24:44,286 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:24:44,296 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:24:44,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:24:44,353 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:24:44,354 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:24:44,354 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:24:44,354 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:24:44,354 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:24:44,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:24:44,355 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:24:44,355 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:24:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-04 23:24:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:24:44,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:24:44,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:24:44,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:24:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:24:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash 754575313, now seen corresponding path program 1 times [2020-09-04 23:24:44,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:24:44,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957920800] [2020-09-04 23:24:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:24:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:44,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:24:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 23:24:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 23:24:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 23:24:44,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957920800] [2020-09-04 23:24:44,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:24:44,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 23:24:44,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229716554] [2020-09-04 23:24:44,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 23:24:44,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:24:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 23:24:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:24:44,632 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2020-09-04 23:24:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:24:44,674 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-09-04 23:24:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 23:24:44,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-09-04 23:24:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:24:44,690 INFO L225 Difference]: With dead ends: 76 [2020-09-04 23:24:44,691 INFO L226 Difference]: Without dead ends: 40 [2020-09-04 23:24:44,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:24:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-04 23:24:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-04 23:24:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 23:24:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-09-04 23:24:44,756 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 33 [2020-09-04 23:24:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:24:44,759 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-09-04 23:24:44,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 23:24:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-09-04 23:24:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:24:44,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:24:44,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:24:44,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:24:44,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:24:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:24:44,764 INFO L82 PathProgramCache]: Analyzing trace with hash 756362773, now seen corresponding path program 1 times [2020-09-04 23:24:44,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:24:44,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830792530] [2020-09-04 23:24:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:24:44,785 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:24:44,786 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:24:44,786 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:24:44,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:24:44,812 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:24:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:24:44 BoogieIcfgContainer [2020-09-04 23:24:44,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:24:44,817 INFO L168 Benchmark]: Toolchain (without parser) took 1456.15 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 142.1 MB in the end (delta: -40.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:24:44,818 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:24:44,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.45 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:24:44,820 INFO L168 Benchmark]: Boogie Preprocessor took 120.23 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 182.3 MB in the end (delta: -90.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:24:44,821 INFO L168 Benchmark]: RCFGBuilder took 388.62 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 167.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:24:44,822 INFO L168 Benchmark]: TraceAbstraction took 551.49 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 142.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:24:44,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.45 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.23 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 182.3 MB in the end (delta: -90.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.62 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 167.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 551.49 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 142.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int x1, x2; [L22] int y1, y2, y3; [L23] x1 = __VERIFIER_nondet_int() [L24] x2 = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(x1 >= 0) [L11] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x1 >= 0) [L27] CALL assume_abort_if_not(x2 != 0) [L11] COND FALSE !(!cond) [L27] RET assume_abort_if_not(x2 != 0) [L29] y1 = 0 [L30] y2 = 0 [L31] y3 = x1 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L14] COND TRUE !(cond) [L16] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...