/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:42:00,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:42:00,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:42:00,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:42:00,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:42:00,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:42:00,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:42:00,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:42:00,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:42:00,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:42:00,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:42:00,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:42:00,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:42:00,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:42:00,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:42:00,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:42:00,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:42:00,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:42:00,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:42:00,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:42:00,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:42:00,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:42:00,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:42:00,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:42:00,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:42:00,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:42:00,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:42:00,928 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:42:00,928 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:42:01,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:42:01,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:42:01,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:42:01,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:42:01,450 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:42:01,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-05-02 23:42:01,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db377d4e8/377b87ba3fe944039b3554297f6ae351/FLAGf016e983f [2021-05-02 23:42:02,273 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:42:02,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-05-02 23:42:02,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db377d4e8/377b87ba3fe944039b3554297f6ae351/FLAGf016e983f [2021-05-02 23:42:02,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db377d4e8/377b87ba3fe944039b3554297f6ae351 [2021-05-02 23:42:02,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:42:02,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:42:02,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:42:02,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:42:02,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:42:02,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:02,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dcfb130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02, skipping insertion in model container [2021-05-02 23:42:02,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:02,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:42:02,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:42:02,888 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] [2021-05-02 23:42:02,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:42:02,920 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:42:02,947 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] [2021-05-02 23:42:02,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:42:02,973 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:42:02,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02 WrapperNode [2021-05-02 23:42:02,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:42:02,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:42:02,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:42:02,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:42:02,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:02,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:03,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:03,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:03,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:03,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:03,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (1/1) ... [2021-05-02 23:42:03,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:42:03,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:42:03,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:42:03,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:42:03,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (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 [2021-05-02 23:42:03,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:42:03,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:42:03,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:42:03,209 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:42:03,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:42:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:42:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:42:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:42:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:42:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:42:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:42:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 23:42:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:42:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:42:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:42:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:42:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:42:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:42:03,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:42:03,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:42:03,622 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 23:42:03,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:42:03 BoogieIcfgContainer [2021-05-02 23:42:03,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:42:03,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:42:03,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:42:03,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:42:03,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:42:02" (1/3) ... [2021-05-02 23:42:03,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f5806e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:42:03, skipping insertion in model container [2021-05-02 23:42:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:42:02" (2/3) ... [2021-05-02 23:42:03,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f5806e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:42:03, skipping insertion in model container [2021-05-02 23:42:03,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:42:03" (3/3) ... [2021-05-02 23:42:03,656 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2021-05-02 23:42:03,670 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:42:03,690 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:42:03,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:42:03,752 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:42:03,752 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:42:03,752 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:42:03,752 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:42:03,752 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:42:03,753 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:42:03,753 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:42:03,753 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:42:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 23:42:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:42:03,792 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:42:03,793 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:42:03,793 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:42:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:42:03,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1088558671, now seen corresponding path program 1 times [2021-05-02 23:42:03,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:42:03,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383106555] [2021-05-02 23:42:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:42:03,906 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:42:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:42:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:42:04,309 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:42:04,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383106555] [2021-05-02 23:42:04,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383106555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:42:04,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:42:04,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:42:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739025631] [2021-05-02 23:42:04,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:42:04,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:42:04,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:42:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:42:04,347 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:42:04,578 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-05-02 23:42:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:42:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:42:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:42:04,591 INFO L225 Difference]: With dead ends: 26 [2021-05-02 23:42:04,592 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 23:42:04,597 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 208.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:42:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 23:42:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 23:42:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 23:42:04,664 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 23:42:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:42:04,665 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 23:42:04,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:42:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 23:42:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 23:42:04,666 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:42:04,666 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:42:04,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:42:04,667 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:42:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:42:04,668 INFO L82 PathProgramCache]: Analyzing trace with hash 614357099, now seen corresponding path program 1 times [2021-05-02 23:42:04,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:42:04,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916821642] [2021-05-02 23:42:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:42:04,824 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~main__x~0_8 0) InVars {main_~main__x~0=v_main_~main__x~0_8} OutVars{main_~main__x~0=v_main_~main__x~0_8} AuxVars[] AssignedVars[] [2021-05-02 23:42:04,885 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 95.7 percent of original size [2021-05-02 23:42:04,906 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:04,931 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:08,973 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:42:13,014 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:42:17,060 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:17,069 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:42:17,075 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:19,256 WARN L205 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:42:23,296 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:27,396 WARN L205 SmtUtils]: Spent 4.10 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:27,401 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-02 23:42:27,406 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-02 23:42:27,419 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:27,425 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:31,466 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:42:35,517 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:39,563 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:39,571 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-02 23:42:39,572 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-02 23:42:39,573 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:39,577 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:43,611 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:42:47,649 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:42:51,702 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:42:51,708 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:42:51,712 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:42:54,300 WARN L205 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:42:54,311 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:42:58,355 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:43:01,953 WARN L205 SmtUtils]: Spent 3.60 s on a formula simplification that was a NOOP. DAG size: 9 [2021-05-02 23:43:05,991 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:05,999 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-02 23:43:10,042 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 8 [2021-05-02 23:43:14,122 WARN L205 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 9 [2021-05-02 23:43:14,133 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:18,174 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:22,216 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:26,270 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:26,283 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-02 23:43:30,321 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:43:33,607 WARN L205 SmtUtils]: Spent 3.28 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:43:35,766 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:35,827 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:35,834 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:35,956 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:43:36,198 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:36,203 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:43:36,211 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:40,374 WARN L205 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:43:42,417 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:43:44,883 WARN L205 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:44,888 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-02 23:43:44,892 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-02 23:43:44,897 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:44,903 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:45,027 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:43:45,156 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:43:45,271 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:45,278 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-02 23:43:45,281 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:43:45,290 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:45,297 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:49,087 WARN L205 SmtUtils]: Spent 3.79 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:43:53,188 WARN L205 SmtUtils]: Spent 4.10 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:43:57,283 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:43:57,291 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-02 23:43:57,295 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-02 23:43:57,492 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-02 23:43:57,725 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-05-02 23:43:57,736 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:43:59,772 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-02 23:44:01,825 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:44:03,880 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:03,889 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-02 23:44:07,959 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 12 [2021-05-02 23:44:07,965 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:44:08,103 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:08,910 WARN L205 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:44:10,987 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-02 23:44:10,991 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-02 23:44:13,085 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:45:21,458 WARN L205 SmtUtils]: Spent 1.14 m on a formula simplification that was a NOOP. DAG size: 8 [2021-05-02 23:45:23,726 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-02 23:45:23,738 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 95.7 percent of original size 223 [2021-05-02 23:45:49,457 WARN L205 SmtUtils]: Spent 25.72 s on a formula simplification that was a NOOP. DAG size: 78 [2021-05-02 23:45:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,840 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 241 [2021-05-02 23:45:49,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:49,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:45:50,134 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2021-05-02 23:45:50,140 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:45:50,181 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-02 23:45:50,181 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:45:50,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:45:50,205 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-02 23:45:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:45:50 BoogieIcfgContainer [2021-05-02 23:45:50,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:45:50,209 INFO L168 Benchmark]: Toolchain (without parser) took 227566.51 ms. Allocated memory was 203.4 MB in the beginning and 280.0 MB in the end (delta: 76.5 MB). Free memory was 169.4 MB in the beginning and 231.0 MB in the end (delta: -61.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:45:50,210 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 203.4 MB. Free memory is still 185.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:45:50,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.50 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 159.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:45:50,212 INFO L168 Benchmark]: Boogie Preprocessor took 56.89 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 158.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:45:50,214 INFO L168 Benchmark]: RCFGBuilder took 590.35 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 174.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:45:50,216 INFO L168 Benchmark]: TraceAbstraction took 226579.80 ms. Allocated memory was 203.4 MB in the beginning and 280.0 MB in the end (delta: 76.5 MB). Free memory was 173.9 MB in the beginning and 231.0 MB in the end (delta: -57.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:45:50,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 203.4 MB. Free memory is still 185.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.50 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 159.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.89 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 158.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 590.35 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 174.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 226579.80 ms. Allocated memory was 203.4 MB in the beginning and 280.0 MB in the end (delta: 76.5 MB). Free memory was 173.9 MB in the beginning and 231.0 MB in the end (delta: -57.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L12] int __return_65; [L15] int main__x; [L16] int main__y; [L17] main__x = -50 [L18] main__y = __VERIFIER_nondet_int() [L19] COND FALSE !(!(-1000 < main__y)) [L25] COND FALSE !(!(main__y < 1000000)) [L32] COND TRUE main__x < 0 [L34] main__x = main__x + main__y [L35] int main____CPAchecker_TMP_0 = main__y; [L36] main__y = main__y + 1 [L32] COND FALSE !(main__x < 0) [L42] int __tmp_1; [L43] __tmp_1 = main__y > 0 [L44] int __VERIFIER_assert__cond; [L45] __VERIFIER_assert__cond = __tmp_1 [L46] COND TRUE __VERIFIER_assert__cond == 0 [L48] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 226454.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 23.9ms, AutomataDifference: 271.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 13 SDslu, 10 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 208.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...