/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/bresenham-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:59:37,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:59:37,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:59:37,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:59:37,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:59:37,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:59:37,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:59:37,932 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 02:59:37,954 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:59:37,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:59:37,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:59:37,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:59:37,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:59:37,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:59:37,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:59:37,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:59:37,960 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:59:37,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 02:59:37,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 02:59:37,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:59:37,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:59:37,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:59:37,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:59:37,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:59:37,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:59:37,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:59:37,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:59:37,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 02:59:37,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:59:38,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:59:38,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:59:38,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:59:38,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:59:38,257 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:59:38,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2022-01-10 02:59:38,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295df481e/cc3459ac3366459280baea76802274dd/FLAG986ecf082 [2022-01-10 02:59:38,723 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:59:38,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2022-01-10 02:59:38,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295df481e/cc3459ac3366459280baea76802274dd/FLAG986ecf082 [2022-01-10 02:59:39,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295df481e/cc3459ac3366459280baea76802274dd [2022-01-10 02:59:39,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:59:39,146 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:59:39,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:59:39,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:59:39,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:59:39,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da218a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39, skipping insertion in model container [2022-01-10 02:59:39,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:59:39,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:59:39,329 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/bresenham-ll_unwindbound2.c[597,610] [2022-01-10 02:59:39,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:59:39,377 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:59:39,388 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/bresenham-ll_unwindbound2.c[597,610] [2022-01-10 02:59:39,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:59:39,406 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:59:39,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39 WrapperNode [2022-01-10 02:59:39,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:59:39,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:59:39,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:59:39,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:59:39,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,433 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-01-10 02:59:39,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:59:39,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:59:39,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:59:39,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:59:39,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:59:39,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:59:39,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:59:39,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:59:39,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (1/1) ... [2022-01-10 02:59:39,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:59:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:59:39,482 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 02:59:39,484 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 02:59:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:59:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 02:59:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:59:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:59:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 02:59:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 02:59:39,579 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:59:39,581 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:59:40,034 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:59:40,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:59:40,039 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 02:59:40,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:40 BoogieIcfgContainer [2022-01-10 02:59:40,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:59:40,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:59:40,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:59:40,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:59:40,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:59:39" (1/3) ... [2022-01-10 02:59:40,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2137cdbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:59:40, skipping insertion in model container [2022-01-10 02:59:40,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:39" (2/3) ... [2022-01-10 02:59:40,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2137cdbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:59:40, skipping insertion in model container [2022-01-10 02:59:40,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:40" (3/3) ... [2022-01-10 02:59:40,052 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound2.c [2022-01-10 02:59:40,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:59:40,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 02:59:40,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:59:40,123 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 02:59:40,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 02:59:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:59:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 02:59:40,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:59:40,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:59:40,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:59:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:59:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-01-10 02:59:40,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:59:40,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825485949] [2022-01-10 02:59:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:59:40,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:59:40,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:59:40,168 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 02:59:40,175 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 02:59:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:59:40,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 02:59:40,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:59:40,878 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 02:59:40,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:59:40,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:59:40,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825485949] [2022-01-10 02:59:40,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825485949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:59:40,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:59:40,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:59:40,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820966954] [2022-01-10 02:59:40,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:59:40,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:59:40,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:59:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:59:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:59:40,908 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 02:59:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:59:42,157 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-01-10 02:59:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:59:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2022-01-10 02:59:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:59:42,165 INFO L225 Difference]: With dead ends: 54 [2022-01-10 02:59:42,165 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 02:59:42,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:59:42,170 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:59:42,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 70 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:59:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 02:59:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-01-10 02:59:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 02:59:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-10 02:59:42,197 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-01-10 02:59:42,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:59:42,198 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-10 02:59:42,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 02:59:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-10 02:59:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 02:59:42,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:59:42,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:59:42,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 02:59:42,410 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 02:59:42,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:59:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:59:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-01-10 02:59:42,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:59:42,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94705084] [2022-01-10 02:59:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:59:42,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:59:42,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:59:42,415 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 02:59:42,416 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 02:59:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:59:43,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 02:59:43,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:59:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:59:45,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:00:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 03:00:13,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:00:13,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94705084] [2022-01-10 03:00:13,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94705084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:00:13,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:00:13,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-01-10 03:00:13,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370949143] [2022-01-10 03:00:13,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:00:13,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 03:00:13,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:00:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 03:00:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-01-10 03:00:13,289 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 20 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 03:00:21,830 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 03:00:24,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:00:27,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:00:29,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:00:31,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:00:58,778 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 []