/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/lcm2_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:24:32,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:24:32,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:24:32,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 03:24:32,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 03:24:32,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 03:24:32,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 03:24:32,436 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 03:24:32,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:24:32,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:24:32,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:24:32,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:24:32,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:24:32,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:24:32,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:24:32,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:24:32,463 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:24:32,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:24:32,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:24:32,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:24:32,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:24:32,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:24:32,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:24:32,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:24:32,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:24:32,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:24:32,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:24:32,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:24:32,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:24:32,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:24:32,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:24:32,761 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:24:32,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2022-01-10 03:24:32,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eacf7bc46/12a9db6b9af84d4398da579f296f1771/FLAGf0eb64b67 [2022-01-10 03:24:33,225 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:24:33,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2022-01-10 03:24:33,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eacf7bc46/12a9db6b9af84d4398da579f296f1771/FLAGf0eb64b67 [2022-01-10 03:24:33,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eacf7bc46/12a9db6b9af84d4398da579f296f1771 [2022-01-10 03:24:33,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:24:33,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:24:33,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:24:33,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:24:33,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:24:33,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5946af00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33, skipping insertion in model container [2022-01-10 03:24:33,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:24:33,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:24:33,779 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/lcm2_valuebound1.c[537,550] [2022-01-10 03:24:33,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:24:33,799 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:24:33,807 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/lcm2_valuebound1.c[537,550] [2022-01-10 03:24:33,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:24:33,819 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:24:33,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33 WrapperNode [2022-01-10 03:24:33,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:24:33,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:24:33,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:24:33,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:24:33,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,841 INFO L137 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-01-10 03:24:33,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:24:33,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:24:33,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:24:33,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:24:33,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:24:33,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:24:33,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:24:33,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:24:33,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (1/1) ... [2022-01-10 03:24:33,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:24:33,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:24:33,896 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 03:24:33,898 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 03:24:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:24:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:24:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 03:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 03:24:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:24:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 03:24:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 03:24:33,982 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:24:33,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:24:34,135 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:24:34,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:24:34,139 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 03:24:34,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:24:34 BoogieIcfgContainer [2022-01-10 03:24:34,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:24:34,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:24:34,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:24:34,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:24:34,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:24:33" (1/3) ... [2022-01-10 03:24:34,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e62088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:24:34, skipping insertion in model container [2022-01-10 03:24:34,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:24:33" (2/3) ... [2022-01-10 03:24:34,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e62088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:24:34, skipping insertion in model container [2022-01-10 03:24:34,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:24:34" (3/3) ... [2022-01-10 03:24:34,167 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2022-01-10 03:24:34,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:24:34,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:24:34,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:24:34,240 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 03:24:34,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:24:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 03:24:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 03:24:34,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:24:34,273 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:24:34,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:24:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:24:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash 902207739, now seen corresponding path program 1 times [2022-01-10 03:24:34,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:24:34,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354321304] [2022-01-10 03:24:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:24:34,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:24:34,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:24:34,317 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 03:24:34,354 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 03:24:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:24:34,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 03:24:34,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:24:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 03:24:34,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:24:34,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:24:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354321304] [2022-01-10 03:24:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354321304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:24:34,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:24:34,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 03:24:34,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482301694] [2022-01-10 03:24:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:24:34,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 03:24:34,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:24:34,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 03:24:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:24:34,556 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 03:24:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:24:34,571 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2022-01-10 03:24:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 03:24:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-01-10 03:24:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:24:34,581 INFO L225 Difference]: With dead ends: 55 [2022-01-10 03:24:34,581 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 03:24:34,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 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 03:24:34,588 INFO L933 BasicCegarLoop]: 36 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, 36 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 03:24:34,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:24:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 03:24:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 03:24:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-10 03:24:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-10 03:24:34,612 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 39 [2022-01-10 03:24:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:24:34,613 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-10 03:24:34,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 03:24:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-10 03:24:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 03:24:34,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:24:34,614 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:24:34,624 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 03:24:34,822 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 03:24:34,822 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:24:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:24:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -722599373, now seen corresponding path program 1 times [2022-01-10 03:24:34,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:24:34,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115363828] [2022-01-10 03:24:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:24:34,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:24:34,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:24:34,826 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 03:24:34,834 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 03:24:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:24:34,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 03:24:34,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:24:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 03:24:35,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:24:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 03:24:36,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:24:36,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115363828] [2022-01-10 03:24:36,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115363828] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 03:24:36,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 03:24:36,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-01-10 03:24:36,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855429100] [2022-01-10 03:24:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:24:36,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 03:24:36,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:24:36,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 03:24:36,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-01-10 03:24:36,155 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 03:24:38,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:24:40,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:24:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:24:40,720 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-01-10 03:24:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:24:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-01-10 03:24:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:24:40,726 INFO L225 Difference]: With dead ends: 36 [2022-01-10 03:24:40,726 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 03:24:40,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-01-10 03:24:40,727 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-10 03:24:40,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-01-10 03:24:40,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 03:24:40,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-10 03:24:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 03:24:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-01-10 03:24:40,737 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 39 [2022-01-10 03:24:40,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:24:40,738 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-01-10 03:24:40,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 03:24:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-01-10 03:24:40,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 03:24:40,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:24:40,739 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:24:40,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 03:24:40,955 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 03:24:40,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:24:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:24:40,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1459116230, now seen corresponding path program 1 times [2022-01-10 03:24:40,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:24:40,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801621183] [2022-01-10 03:24:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:24:40,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:24:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:24:40,958 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 03:24:40,960 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 03:24:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:24:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 03:24:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:24:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 03:24:41,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:24:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 03:24:41,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:24:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801621183] [2022-01-10 03:24:41,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801621183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:24:41,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:24:41,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 03:24:41,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127654807] [2022-01-10 03:24:41,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:24:41,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 03:24:41,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:24:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 03:24:41,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-10 03:24:41,806 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) [2022-01-10 03:24:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:24:41,977 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-01-10 03:24:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 03:24:41,983 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) Word has length 47 [2022-01-10 03:24:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:24:41,984 INFO L225 Difference]: With dead ends: 34 [2022-01-10 03:24:41,984 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 03:24:41,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-01-10 03:24:41,986 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:24:41,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 92 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:24:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 03:24:41,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 03:24:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:24:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 03:24:41,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-01-10 03:24:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:24:41,988 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 03:24:41,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) [2022-01-10 03:24:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 03:24:41,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 03:24:41,990 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 03:24:42,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 03:24:42,212 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 03:24:42,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 03:24:42,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 03:24:42,777 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2022-01-10 03:24:42,777 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2022-01-10 03:24:42,777 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) [2022-01-10 03:24:42,777 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2022-01-10 03:24:42,778 INFO L861 garLoopResultBuilder]: At program point L56(lines 19 57) the Hoare annotation is: true [2022-01-10 03:24:42,778 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-01-10 03:24:42,780 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-01-10 03:24:42,780 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-01-10 03:24:42,780 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul |ULTIMATE.start_main_~b~0#1| (bvmul |ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2022-01-10 03:24:42,780 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2022-01-10 03:24:42,780 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 03:24:42,780 INFO L858 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2022-01-10 03:24:42,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 03:24:42,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 03:24:42,781 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2022-01-10 03:24:42,781 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2022-01-10 03:24:42,781 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul |ULTIMATE.start_main_~b~0#1| (bvmul |ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2022-01-10 03:24:42,781 INFO L854 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul |ULTIMATE.start_main_~b~0#1| (bvmul |ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) [2022-01-10 03:24:42,781 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-01-10 03:24:42,781 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-01-10 03:24:42,781 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-01-10 03:24:42,782 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-01-10 03:24:42,782 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-01-10 03:24:42,782 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-01-10 03:24:42,782 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-01-10 03:24:42,782 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-01-10 03:24:42,782 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-01-10 03:24:42,782 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-01-10 03:24:42,785 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-10 03:24:42,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 03:24:42,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:24:42 BoogieIcfgContainer [2022-01-10 03:24:42,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 03:24:42,797 INFO L158 Benchmark]: Toolchain (without parser) took 9156.58ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 128.7MB in the beginning and 182.7MB in the end (delta: -53.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 03:24:42,797 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 03:24:42,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.82ms. Allocated memory is still 184.5MB. Free memory was 128.5MB in the beginning and 156.7MB in the end (delta: -28.1MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2022-01-10 03:24:42,798 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.00ms. Allocated memory is still 184.5MB. Free memory was 156.7MB in the beginning and 155.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 03:24:42,798 INFO L158 Benchmark]: Boogie Preprocessor took 14.03ms. Allocated memory is still 184.5MB. Free memory was 155.0MB in the beginning and 153.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 03:24:42,798 INFO L158 Benchmark]: RCFGBuilder took 284.17ms. Allocated memory is still 184.5MB. Free memory was 153.6MB in the beginning and 143.8MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 03:24:42,798 INFO L158 Benchmark]: TraceAbstraction took 8654.57ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 143.4MB in the beginning and 182.7MB in the end (delta: -39.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 03:24:42,800 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 184.5MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.82ms. Allocated memory is still 184.5MB. Free memory was 128.5MB in the beginning and 156.7MB in the end (delta: -28.1MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.00ms. Allocated memory is still 184.5MB. Free memory was 156.7MB in the beginning and 155.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.03ms. Allocated memory is still 184.5MB. Free memory was 155.0MB in the beginning and 153.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 284.17ms. Allocated memory is still 184.5MB. Free memory was 153.6MB in the beginning and 143.8MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 8654.57ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 143.4MB in the beginning and 182.7MB in the end (delta: -39.2MB). There was no memory consumed. 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 226 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 79 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 18, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 27 PreInvPairs, 36 NumberOfFragments, 139 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 584 SizeOfPredicates, 14 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 236/308 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((~bvuge32(a, 1bv32) && ~bvuge32(x, 1bv32)) && ~bvuge32(y, 1bv32)) && ~bvule32(x, 1bv32)) && ~bvadd16(~bvmul32(y, v), ~bvmul32(x, u)) == ~bvmul32(b, ~bvmul32(a, 2bv32))) && ~bvule32(b, 1bv32)) && ~bvule32(y, 1bv32)) && ~bvuge32(b, 1bv32)) && ~bvule32(a, 1bv32) RESULT: Ultimate proved your program to be correct! [2022-01-10 03:24:42,832 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...