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/fermat1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:18:38,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:18:38,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:18:38,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 13:18:38,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:18:38,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:18:38,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:18:38,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:18:38,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:18:38,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:18:38,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:18:38,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:18:38,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:18:38,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:18:38,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:18:38,836 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 [2019-09-05 13:18:38,858 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:18:38,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:18:38,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:18:38,860 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:18:38,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:18:38,861 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:18:38,861 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:18:38,861 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:18:38,861 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:18:38,862 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:18:38,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:18:38,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:18:38,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:18:38,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:18:38,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:18:38,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:18:38,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:18:38,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:18:38,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:18:38,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:18:38,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:18:38,867 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:18:38,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:18:38,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:18:38,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:18:38,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:18:38,868 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:18:38,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:18:38,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:18:38,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:18:38,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:18:38,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:18:38,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:18:38,946 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:18:38,946 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:18:38,947 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat1.c [2019-09-05 13:18:39,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b204565/0b509a01f3944bd2861d633627185bd2/FLAG74337a301 [2019-09-05 13:18:39,440 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:18:39,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1.c [2019-09-05 13:18:39,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b204565/0b509a01f3944bd2861d633627185bd2/FLAG74337a301 [2019-09-05 13:18:39,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b204565/0b509a01f3944bd2861d633627185bd2 [2019-09-05 13:18:39,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:18:39,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:18:39,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:18:39,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:18:39,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:18:39,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:18:39" (1/1) ... [2019-09-05 13:18:39,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb0ce0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:39, skipping insertion in model container [2019-09-05 13:18:39,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:18:39" (1/1) ... [2019-09-05 13:18:39,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:18:39,862 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:18:40,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:18:40,058 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:18:40,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:18:40,108 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:18:40,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40 WrapperNode [2019-09-05 13:18:40,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:18:40,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:18:40,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:18:40,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:18:40,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (1/1) ... [2019-09-05 13:18:40,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:18:40,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:18:40,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:18:40,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:18:40,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (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 [2019-09-05 13:18:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:18:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:18:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:18:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:18:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:18:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-05 13:18:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:18:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:18:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:18:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:18:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:18:40,469 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:18:40,470 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-05 13:18:40,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:18:40 BoogieIcfgContainer [2019-09-05 13:18:40,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:18:40,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:18:40,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:18:40,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:18:40,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:18:39" (1/3) ... [2019-09-05 13:18:40,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7531dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:18:40, skipping insertion in model container [2019-09-05 13:18:40,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:18:40" (2/3) ... [2019-09-05 13:18:40,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7531dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:18:40, skipping insertion in model container [2019-09-05 13:18:40,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:18:40" (3/3) ... [2019-09-05 13:18:40,478 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat1.c [2019-09-05 13:18:40,488 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:18:40,496 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:18:40,512 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:18:40,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:18:40,558 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:18:40,558 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:18:40,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:18:40,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:18:40,559 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:18:40,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:18:40,560 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:18:40,580 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-05 13:18:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:18:40,591 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:18:40,592 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:18:40,595 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:18:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:18:40,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1029581307, now seen corresponding path program 1 times [2019-09-05 13:18:40,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:18:40,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:18:40,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:18:40,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:18:40,658 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:18:40,676 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:18:40,676 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:18:40,676 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 [2019-09-05 13:18:40,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:18:40,694 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:18:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-05 13:18:40,711 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:18:40,713 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:18:40,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:18:40,713 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 [2019-09-05 13:18:40,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:18:40,727 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:18:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:18:40,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-05 13:18:40,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:18:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:18:40,772 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:18:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:18:40,790 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:18:40,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-09-05 13:18:40,791 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:18:40,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:18:40,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:18:40,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:18:40,811 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-09-05 13:18:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:18:40,830 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2019-09-05 13:18:40,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:18:40,831 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 13:18:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:18:40,840 INFO L225 Difference]: With dead ends: 26 [2019-09-05 13:18:40,840 INFO L226 Difference]: Without dead ends: 21 [2019-09-05 13:18:40,842 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:18:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-05 13:18:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-05 13:18:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-05 13:18:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-09-05 13:18:40,879 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2019-09-05 13:18:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:18:40,880 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-09-05 13:18:40,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:18:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-09-05 13:18:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:18:40,881 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:18:40,881 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:18:40,881 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:18:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:18:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 989691158, now seen corresponding path program 1 times [2019-09-05 13:18:40,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:18:40,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:18:40,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:18:40,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:18:40,883 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:18:40,886 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:18:40,886 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:18:40,886 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 [2019-09-05 13:18:40,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:18:40,900 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:18:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:18:40,916 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:18:40,916 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:18:40,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:18:40,917 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 [2019-09-05 13:18:40,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:18:40,928 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:18:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:18:40,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-05 13:18:40,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:18:41,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:01,950 WARN L188 SmtUtils]: Spent 14.59 s on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2019-09-05 13:19:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:04,776 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:19:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:12,489 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:19:12,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-05 13:19:12,490 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:19:12,491 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:19:12,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:19:12,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=37, Unknown=5, NotChecked=0, Total=56 [2019-09-05 13:19:12,492 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 5 states. [2019-09-05 13:19:27,711 WARN L188 SmtUtils]: Spent 8.77 s on a formula simplification that was a NOOP. DAG size: 41 [2019-09-05 13:19:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:19:54,148 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-05 13:19:54,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 13:19:54,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 13:19:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:19:54,150 INFO L225 Difference]: With dead ends: 35 [2019-09-05 13:19:54,151 INFO L226 Difference]: Without dead ends: 35 [2019-09-05 13:19:54,152 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=19, Invalid=45, Unknown=8, NotChecked=0, Total=72 [2019-09-05 13:19:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-05 13:19:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-05 13:19:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-05 13:19:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-09-05 13:19:54,164 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 10 [2019-09-05 13:19:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:19:54,164 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-09-05 13:19:54,164 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:19:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-09-05 13:19:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-05 13:19:54,165 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:19:54,166 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:19:54,166 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:19:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:19:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -732641273, now seen corresponding path program 1 times [2019-09-05 13:19:54,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:19:54,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:54,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:54,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:54,168 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:19:54,171 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:19:54,171 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:19:54,171 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:19:54,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:54,181 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:19:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:54,191 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-05 13:19:54,193 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [17], [61], [64], [66], [69], [71], [72], [73], [74], [76], [77], [82] [2019-09-05 13:19:54,224 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:19:54,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:19:54,308 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-05 13:19:55,537 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:19:55,540 INFO L272 AbstractInterpreter]: Visited 15 different actions 20 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 14. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 7 variables. [2019-09-05 13:19:55,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:19:55,544 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:19:55,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:19:55,544 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:19:55,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:55,566 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:19:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:55,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-05 13:19:55,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:19:55,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:55,706 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:19:55,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:55,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:55,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:19:55,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-05 13:19:55,846 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:19:55,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-05 13:19:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-05 13:19:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-05 13:19:55,847 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 13 states. [2019-09-05 13:19:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:19:56,116 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2019-09-05 13:19:56,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-05 13:19:56,117 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-09-05 13:19:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:19:56,118 INFO L225 Difference]: With dead ends: 32 [2019-09-05 13:19:56,118 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:19:56,119 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-09-05 13:19:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:19:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:19:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:19:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:19:56,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-05 13:19:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:19:56,120 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:19:56,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-05 13:19:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:19:56,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:19:56,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:19:56 BoogieIcfgContainer [2019-09-05 13:19:56,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:19:56,130 INFO L168 Benchmark]: Toolchain (without parser) took 76302.09 ms. Allocated memory was 137.9 MB in the beginning and 259.5 MB in the end (delta: 121.6 MB). Free memory was 88.0 MB in the beginning and 94.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 115.0 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:56,132 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:19:56,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.70 ms. Allocated memory is still 137.9 MB. Free memory was 87.8 MB in the beginning and 77.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:56,136 INFO L168 Benchmark]: Boogie Preprocessor took 130.77 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 77.5 MB in the beginning and 177.3 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:56,137 INFO L168 Benchmark]: RCFGBuilder took 230.71 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 165.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:56,139 INFO L168 Benchmark]: TraceAbstraction took 75655.54 ms. Allocated memory was 200.3 MB in the beginning and 259.5 MB in the end (delta: 59.2 MB). Free memory was 164.5 MB in the beginning and 94.7 MB in the end (delta: 69.8 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:56,147 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.70 ms. Allocated memory is still 137.9 MB. Free memory was 87.8 MB in the beginning and 77.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.77 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 77.5 MB in the beginning and 177.3 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.71 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 165.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 75655.54 ms. Allocated memory was 200.3 MB in the beginning and 259.5 MB in the end (delta: 59.2 MB). Free memory was 164.5 MB in the beginning and 94.7 MB in the end (delta: 69.8 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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, 26 locations, 1 error locations. SAFE Result, 75.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 41.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 33 SDslu, 110 SDs, 0 SdLazy, 90 SolverSat, 17 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 26.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 41.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 31.8s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 5 QuantifiedInterpolants, 5370 SizeOfPredicates, 11 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 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...