/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:26:05,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:26:05,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:26:05,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 03:26:05,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 03:26:05,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:26:05,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:26:05,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:26:05,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:26:05,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:26:05,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:26:05,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:26:05,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:26:05,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:26:05,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:26:05,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:26:05,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:26:05,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:26:05,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:26:05,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:26:05,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:26:05,558 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:26:05,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:26:05,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:26:05,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:26:05,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:26:05,756 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:26:05,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2022-01-10 03:26:05,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a10503d/d474c61bc5c447308c3056c3e5301c1d/FLAG03b188a3f [2022-01-10 03:26:06,145 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:26:06,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2022-01-10 03:26:06,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a10503d/d474c61bc5c447308c3056c3e5301c1d/FLAG03b188a3f [2022-01-10 03:26:06,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a10503d/d474c61bc5c447308c3056c3e5301c1d [2022-01-10 03:26:06,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:26:06,566 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:26:06,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:26:06,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:26:06,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:26:06,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29568f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06, skipping insertion in model container [2022-01-10 03:26:06,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:26:06,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:26:06,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c[524,537] [2022-01-10 03:26:06,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:26:06,751 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:26:06,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c[524,537] [2022-01-10 03:26:06,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:26:06,773 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:26:06,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06 WrapperNode [2022-01-10 03:26:06,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:26:06,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:26:06,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:26:06,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:26:06,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,803 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2022-01-10 03:26:06,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:26:06,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:26:06,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:26:06,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:26:06,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:26:06,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:26:06,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:26:06,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:26:06,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (1/1) ... [2022-01-10 03:26:06,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:26:06,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:26:06,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 03:26:06,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 03:26:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:26:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:26:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:26:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:26:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 03:26:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 03:26:06,944 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:26:06,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:26:07,470 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:26:07,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:26:07,474 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 03:26:07,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:26:07 BoogieIcfgContainer [2022-01-10 03:26:07,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:26:07,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:26:07,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:26:07,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:26:07,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:26:06" (1/3) ... [2022-01-10 03:26:07,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64be8a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:26:07, skipping insertion in model container [2022-01-10 03:26:07,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:26:06" (2/3) ... [2022-01-10 03:26:07,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64be8a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:26:07, skipping insertion in model container [2022-01-10 03:26:07,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:26:07" (3/3) ... [2022-01-10 03:26:07,498 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound1.c [2022-01-10 03:26:07,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:26:07,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:26:07,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:26:07,547 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 03:26:07,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:26:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 03:26:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 03:26:07,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:26:07,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:26:07,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:26:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:26:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash -563977895, now seen corresponding path program 1 times [2022-01-10 03:26:07,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:26:07,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516630552] [2022-01-10 03:26:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:26:07,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:26:07,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:26:07,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:26:07,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 03:26:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:26:07,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 03:26:07,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:26:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:26:07,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:26:07,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:26:07,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516630552] [2022-01-10 03:26:07,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516630552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:26:07,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:26:07,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 03:26:07,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950471030] [2022-01-10 03:26:07,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:26:07,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 03:26:07,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:26:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 03:26:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:26:07,750 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:26:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:26:07,768 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-01-10 03:26:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 03:26:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 03:26:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:26:07,774 INFO L225 Difference]: With dead ends: 43 [2022-01-10 03:26:07,774 INFO L226 Difference]: Without dead ends: 19 [2022-01-10 03:26:07,776 INFO L932 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 [2022-01-10 03:26:07,779 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:26:07,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:26:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-10 03:26:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-10 03:26:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 03:26:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-01-10 03:26:07,805 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2022-01-10 03:26:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:26:07,805 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-01-10 03:26:07,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:26:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-01-10 03:26:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 03:26:07,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:26:07,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:26:07,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 03:26:08,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:26:08,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:26:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:26:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1986058659, now seen corresponding path program 1 times [2022-01-10 03:26:08,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:26:08,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279982447] [2022-01-10 03:26:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:26:08,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:26:08,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:26:08,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:26:08,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 03:26:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:26:08,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 03:26:08,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:26:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:26:08,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:26:08,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:26:08,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279982447] [2022-01-10 03:26:08,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279982447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:26:08,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:26:08,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 03:26:08,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114219701] [2022-01-10 03:26:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:26:08,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 03:26:08,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:26:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 03:26:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 03:26:08,166 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:26:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:26:08,192 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-01-10 03:26:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 03:26:08,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 03:26:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:26:08,194 INFO L225 Difference]: With dead ends: 29 [2022-01-10 03:26:08,194 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 03:26:08,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 03:26:08,196 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:26:08,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:26:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 03:26:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 03:26:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 03:26:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-01-10 03:26:08,204 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2022-01-10 03:26:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:26:08,207 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-01-10 03:26:08,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:26:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-01-10 03:26:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 03:26:08,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:26:08,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:26:08,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 03:26:08,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:26:08,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:26:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:26:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1984271199, now seen corresponding path program 1 times [2022-01-10 03:26:08,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:26:08,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448528743] [2022-01-10 03:26:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:26:08,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:26:08,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:26:08,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:26:08,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 03:26:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:26:08,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 03:26:08,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:26:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:26:09,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:26:09,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:26:09,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448528743] [2022-01-10 03:26:09,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448528743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:26:09,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:26:09,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 03:26:09,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216038762] [2022-01-10 03:26:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:26:09,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 03:26:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:26:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 03:26:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 03:26:09,173 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:26:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:26:10,654 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-01-10 03:26:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 03:26:10,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 03:26:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:26:10,655 INFO L225 Difference]: With dead ends: 34 [2022-01-10 03:26:10,655 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 03:26:10,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 03:26:10,656 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 03:26:10,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 63 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 03:26:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 03:26:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-01-10 03:26:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 03:26:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-01-10 03:26:10,662 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2022-01-10 03:26:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:26:10,662 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-01-10 03:26:10,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:26:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-01-10 03:26:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 03:26:10,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:26:10,662 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:26:10,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 03:26:10,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:26:10,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:26:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:26:10,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1194524114, now seen corresponding path program 1 times [2022-01-10 03:26:10,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:26:10,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904049804] [2022-01-10 03:26:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:26:10,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:26:10,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:26:10,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:26:10,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 03:26:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:26:11,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 03:26:11,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:26:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:26:11,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:26:11,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:26:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904049804] [2022-01-10 03:26:11,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904049804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:26:11,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:26:11,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 03:26:11,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166650165] [2022-01-10 03:26:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:26:11,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 03:26:11,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:26:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 03:26:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 03:26:11,976 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2022-01-10 03:26:14,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:26:14,001 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-01-10 03:26:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 03:26:14,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) Word has length 16 [2022-01-10 03:26:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:26:14,004 INFO L225 Difference]: With dead ends: 38 [2022-01-10 03:26:14,004 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 03:26:14,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-10 03:26:14,011 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 03:26:14,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 79 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 03:26:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 03:26:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-01-10 03:26:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 03:26:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-01-10 03:26:14,027 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16 [2022-01-10 03:26:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:26:14,027 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-01-10 03:26:14,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2022-01-10 03:26:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-01-10 03:26:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 03:26:14,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:26:14,028 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:26:14,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 03:26:14,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:26:14,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:26:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:26:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1756733383, now seen corresponding path program 1 times [2022-01-10 03:26:14,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:26:14,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794572778] [2022-01-10 03:26:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:26:14,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:26:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:26:14,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:26:14,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 03:26:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 03:26:14,358 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 03:26:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 03:26:14,554 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 03:26:14,554 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 03:26:14,554 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 03:26:14,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 03:26:14,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:26:14,759 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-10 03:26:14,760 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 03:26:14,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:26:14 BoogieIcfgContainer [2022-01-10 03:26:14,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 03:26:14,779 INFO L158 Benchmark]: Toolchain (without parser) took 8212.77ms. Allocated memory was 179.3MB in the beginning and 220.2MB in the end (delta: 40.9MB). Free memory was 122.2MB in the beginning and 85.1MB in the end (delta: 37.1MB). Peak memory consumption was 77.5MB. Max. memory is 8.0GB. [2022-01-10 03:26:14,779 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 03:26:14,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.73ms. Allocated memory was 179.3MB in the beginning and 220.2MB in the end (delta: 40.9MB). Free memory was 122.0MB in the beginning and 192.0MB in the end (delta: -70.1MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-01-10 03:26:14,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.80ms. Allocated memory is still 220.2MB. Free memory was 192.0MB in the beginning and 190.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 03:26:14,779 INFO L158 Benchmark]: Boogie Preprocessor took 28.71ms. Allocated memory is still 220.2MB. Free memory was 190.5MB in the beginning and 189.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 03:26:14,780 INFO L158 Benchmark]: RCFGBuilder took 642.69ms. Allocated memory is still 220.2MB. Free memory was 189.2MB in the beginning and 177.9MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 03:26:14,780 INFO L158 Benchmark]: TraceAbstraction took 7296.10ms. Allocated memory is still 220.2MB. Free memory was 177.4MB in the beginning and 85.1MB in the end (delta: 92.3MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2022-01-10 03:26:14,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.73ms. Allocated memory was 179.3MB in the beginning and 220.2MB in the end (delta: 40.9MB). Free memory was 122.0MB in the beginning and 192.0MB in the end (delta: -70.1MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.80ms. Allocated memory is still 220.2MB. Free memory was 192.0MB in the beginning and 190.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.71ms. Allocated memory is still 220.2MB. Free memory was 190.5MB in the beginning and 189.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 642.69ms. Allocated memory is still 220.2MB. Free memory was 189.2MB in the beginning and 177.9MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 7296.10ms. Allocated memory is still 220.2MB. Free memory was 177.4MB in the beginning and 85.1MB in the end (delta: 92.3MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [a=-2147483648, b=2, counter=0, p=1, q=0, x=-2147483648, y=2] [L33] EXPR counter++ VAL [a=-2147483648, b=2, counter=1, counter++=0, p=1, q=0, x=-2147483648, y=2] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=-2147483648, b=2, counter=1, p=1, q=0, x=-2147483648, y=2] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=-2147483648, b=2, counter=1, p=1, q=0, x=-2147483648, y=2] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=-1073741824, b=1, counter=1, p=4, q=0, x=-2147483648, y=2] [L33] EXPR counter++ VAL [a=-1073741824, b=1, counter=2, counter++=1, p=4, q=0, x=-2147483648, y=2] [L33] COND FALSE !(counter++<1) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, counter=2] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 234 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 83 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 21, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 8 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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 proved your program to be incorrect! [2022-01-10 03:26:14,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...