/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 06:49:50,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 06:49:50,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 06:49:50,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 06:49:50,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 06:49:50,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 06:49:50,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 06:49:50,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 06:49:50,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 06:49:50,545 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 06:49:50,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 06:49:50,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 06:49:50,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 06:49:50,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 06:49:50,547 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 06:49:50,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 06:49:50,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 06:49:50,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 06:49:50,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 06:49:50,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 06:49:50,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 06:49:50,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 06:49:50,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 06:49:50,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 06:49:50,549 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 06:49:50,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 06:49:50,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 06:49:50,549 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 06:49:50,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 06:49:50,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 06:49:50,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 06:49:50,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 06:49:50,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:49:50,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 06:49:50,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 06:49:50,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 06:49:50,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 06:49:50,553 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 06:49:50,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 06:49:50,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 06:49:50,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 06:49:50,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 06:49:50,787 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 06:49:50,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound2.c [2023-12-21 06:49:51,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 06:49:52,026 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 06:49:52,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound2.c [2023-12-21 06:49:52,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2451acbfa/b23297d6f97b4b918aa2018159a6de25/FLAG02ff4878c [2023-12-21 06:49:52,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2451acbfa/b23297d6f97b4b918aa2018159a6de25 [2023-12-21 06:49:52,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 06:49:52,048 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 06:49:52,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 06:49:52,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 06:49:52,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 06:49:52,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4333098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52, skipping insertion in model container [2023-12-21 06:49:52,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 06:49:52,193 WARN L239 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/geo2-ll_unwindbound2.c[525,538] [2023-12-21 06:49:52,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:49:52,219 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 06:49:52,229 WARN L239 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/geo2-ll_unwindbound2.c[525,538] [2023-12-21 06:49:52,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:49:52,249 INFO L206 MainTranslator]: Completed translation [2023-12-21 06:49:52,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52 WrapperNode [2023-12-21 06:49:52,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 06:49:52,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 06:49:52,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 06:49:52,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 06:49:52,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,272 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-12-21 06:49:52,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 06:49:52,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 06:49:52,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 06:49:52,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 06:49:52,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,301 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 06:49:52,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 06:49:52,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 06:49:52,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 06:49:52,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 06:49:52,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (1/1) ... [2023-12-21 06:49:52,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:49:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:49:52,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 06:49:52,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 06:49:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 06:49:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 06:49:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 06:49:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 06:49:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 06:49:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 06:49:52,422 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 06:49:52,425 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 06:49:52,534 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 06:49:52,551 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 06:49:52,551 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 06:49:52,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:49:52 BoogieIcfgContainer [2023-12-21 06:49:52,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 06:49:52,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 06:49:52,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 06:49:52,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 06:49:52,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:49:52" (1/3) ... [2023-12-21 06:49:52,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7e042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:49:52, skipping insertion in model container [2023-12-21 06:49:52,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:52" (2/3) ... [2023-12-21 06:49:52,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7e042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:49:52, skipping insertion in model container [2023-12-21 06:49:52,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:49:52" (3/3) ... [2023-12-21 06:49:52,558 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound2.c [2023-12-21 06:49:52,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 06:49:52,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 06:49:52,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 06:49:52,607 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dcadb6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 06:49:52,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 06:49:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) [2023-12-21 06:49:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 06:49:52,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:49:52,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 06:49:52,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:49:52,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:49:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2138246143, now seen corresponding path program 1 times [2023-12-21 06:49:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:49:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145913567] [2023-12-21 06:49:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:49:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:49:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145913567] [2023-12-21 06:49:52,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 06:49:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603786639] [2023-12-21 06:49:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:52,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:52,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:49:52,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:49:52,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 06:49:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:52,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 06:49:52,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:49:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 06:49:52,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:49:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603786639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:49:52,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:49:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 06:49:52,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822399618] [2023-12-21 06:49:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:49:52,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 06:49:52,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:49:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 06:49:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:49:52,806 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-21 06:49:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:49:52,830 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2023-12-21 06:49:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 06:49:52,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 6 [2023-12-21 06:49:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:49:52,836 INFO L225 Difference]: With dead ends: 27 [2023-12-21 06:49:52,837 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 06:49:52,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:49:52,842 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:49:52,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:49:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 06:49:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 06:49:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 06:49:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-21 06:49:52,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-12-21 06:49:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:49:52,866 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-21 06:49:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-21 06:49:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-21 06:49:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 06:49:52,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:49:52,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:49:52,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 06:49:53,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 06:49:53,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:49:53,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:49:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1461620770, now seen corresponding path program 1 times [2023-12-21 06:49:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:49:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531842558] [2023-12-21 06:49:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:53,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:49:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:49:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531842558] [2023-12-21 06:49:53,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 06:49:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587265734] [2023-12-21 06:49:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:53,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:53,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:49:53,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:49:53,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 06:49:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:53,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 06:49:53,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:49:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 06:49:53,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:49:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587265734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:49:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:49:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 06:49:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141950575] [2023-12-21 06:49:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:49:53,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 06:49:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:49:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 06:49:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 06:49:53,251 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-21 06:49:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:49:53,266 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-12-21 06:49:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 06:49:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2023-12-21 06:49:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:49:53,267 INFO L225 Difference]: With dead ends: 21 [2023-12-21 06:49:53,267 INFO L226 Difference]: Without dead ends: 14 [2023-12-21 06:49:53,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 06:49:53,268 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:49:53,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:49:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-21 06:49:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-21 06:49:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 06:49:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-21 06:49:53,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2023-12-21 06:49:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:49:53,272 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-21 06:49:53,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-21 06:49:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-21 06:49:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 06:49:53,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:49:53,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:49:53,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 06:49:53,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 06:49:53,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:49:53,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:49:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1463408230, now seen corresponding path program 1 times [2023-12-21 06:49:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:49:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369832028] [2023-12-21 06:49:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:49:53,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:49:53,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975187273] [2023-12-21 06:49:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:53,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:49:53,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:49:53,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 06:49:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:53,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 06:49:53,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:49:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 06:49:53,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:49:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:49:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369832028] [2023-12-21 06:49:53,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:49:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975187273] [2023-12-21 06:49:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975187273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:49:53,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:49:53,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 06:49:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652614519] [2023-12-21 06:49:53,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:49:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:49:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:49:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:49:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:49:53,631 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-21 06:49:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:49:53,668 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-12-21 06:49:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 06:49:53,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2023-12-21 06:49:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:49:53,670 INFO L225 Difference]: With dead ends: 23 [2023-12-21 06:49:53,670 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 06:49:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 06:49:53,673 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:49:53,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:49:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 06:49:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-21 06:49:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2023-12-21 06:49:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-12-21 06:49:53,681 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2023-12-21 06:49:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:49:53,681 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-12-21 06:49:53,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-21 06:49:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-12-21 06:49:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 06:49:53,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:49:53,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:49:53,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 06:49:53,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:53,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:49:53,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:49:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1726160663, now seen corresponding path program 1 times [2023-12-21 06:49:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:49:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786194620] [2023-12-21 06:49:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:53,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:49:53,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:49:53,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689565659] [2023-12-21 06:49:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:53,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:53,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:49:53,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:49:53,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 06:49:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:53,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 06:49:53,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:49:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 06:49:54,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:49:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 06:49:54,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:49:54,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786194620] [2023-12-21 06:49:54,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:49:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689565659] [2023-12-21 06:49:54,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689565659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:49:54,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:49:54,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2023-12-21 06:49:54,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871741972] [2023-12-21 06:49:54,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:49:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:49:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:49:54,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:49:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:49:54,058 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 06:49:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:49:54,082 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-12-21 06:49:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:49:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-12-21 06:49:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:49:54,085 INFO L225 Difference]: With dead ends: 29 [2023-12-21 06:49:54,086 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 06:49:54,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 06:49:54,091 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:49:54,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:49:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 06:49:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 06:49:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-12-21 06:49:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-12-21 06:49:54,098 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2023-12-21 06:49:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:49:54,099 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-12-21 06:49:54,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 06:49:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-12-21 06:49:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 06:49:54,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:49:54,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:49:54,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 06:49:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:54,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:49:54,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:49:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1724373203, now seen corresponding path program 1 times [2023-12-21 06:49:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:49:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224953339] [2023-12-21 06:49:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:49:54,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:49:54,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261748198] [2023-12-21 06:49:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:49:54,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:49:54,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:49:54,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:49:54,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 06:49:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:49:54,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 06:49:54,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:49:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 06:49:54,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:50:11,726 WARN L876 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0)))) is different from true [2023-12-21 06:50:11,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:50:11,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224953339] [2023-12-21 06:50:11,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:50:11,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261748198] [2023-12-21 06:50:11,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261748198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:50:11,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:50:11,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-21 06:50:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288747309] [2023-12-21 06:50:11,728 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:50:11,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 06:50:11,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:50:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 06:50:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=85, Unknown=2, NotChecked=18, Total=132 [2023-12-21 06:50:11,729 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 06:50:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:50:11,816 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-12-21 06:50:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 06:50:11,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-21 06:50:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:50:11,817 INFO L225 Difference]: With dead ends: 31 [2023-12-21 06:50:11,817 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 06:50:11,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=40, Invalid=118, Unknown=2, NotChecked=22, Total=182 [2023-12-21 06:50:11,818 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:50:11,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:50:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 06:50:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 06:50:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 06:50:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-12-21 06:50:11,822 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2023-12-21 06:50:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:50:11,822 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-12-21 06:50:11,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 06:50:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-12-21 06:50:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 06:50:11,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:50:11,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-21 06:50:11,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 06:50:12,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:50:12,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:50:12,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:50:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1594000720, now seen corresponding path program 2 times [2023-12-21 06:50:12,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:50:12,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493171796] [2023-12-21 06:50:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:50:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:50:12,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:50:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402829450] [2023-12-21 06:50:12,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:50:12,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:50:12,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:50:12,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:50:12,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 06:50:12,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:50:12,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:50:12,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 06:50:12,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:50:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 06:50:12,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:50:32,688 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0))) is different from true [2023-12-21 06:50:57,958 WARN L293 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:51:01,967 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0))) is different from true [2023-12-21 06:51:10,009 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:51:18,020 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:51:26,110 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0))) is different from true [2023-12-21 06:51:38,157 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:51:50,296 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| Int)) (or (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615) 1) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0)))) is different from true [2023-12-21 06:52:02,323 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:52:23,132 WARN L293 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:52:36,640 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| Int)) (or (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615) 1) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-12-21 06:52:44,655 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:52:52,666 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:53:04,690 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:53:12,698 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:53:17,954 WARN L293 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 06:53:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 12 not checked. [2023-12-21 06:53:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:53:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493171796] [2023-12-21 06:53:17,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:53:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402829450] [2023-12-21 06:53:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402829450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:53:17,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:53:17,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2023-12-21 06:53:17,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928331378] [2023-12-21 06:53:17,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:53:17,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 06:53:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:53:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 06:53:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=126, Unknown=6, NotChecked=130, Total=306 [2023-12-21 06:53:17,957 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 06:53:30,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:34,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:38,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:42,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:46,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:50,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:54,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:53:58,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:54:02,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:54:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:54:02,470 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2023-12-21 06:54:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 06:54:02,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2023-12-21 06:54:02,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:54:02,472 INFO L225 Difference]: With dead ends: 48 [2023-12-21 06:54:02,472 INFO L226 Difference]: Without dead ends: 43 [2023-12-21 06:54:02,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=66, Invalid=188, Unknown=6, NotChecked=160, Total=420 [2023-12-21 06:54:02,474 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 14 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2023-12-21 06:54:02,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 116 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 90 Invalid, 9 Unknown, 232 Unchecked, 36.3s Time] [2023-12-21 06:54:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-21 06:54:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-21 06:54:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 06:54:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-12-21 06:54:02,481 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2023-12-21 06:54:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:54:02,481 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-12-21 06:54:02,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 06:54:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-12-21 06:54:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 06:54:02,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:54:02,483 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 06:54:02,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 06:54:02,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:54:02,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:54:02,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:54:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2037579269, now seen corresponding path program 3 times [2023-12-21 06:54:02,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:54:02,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404946527] [2023-12-21 06:54:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:54:02,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:54:02,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:54:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681687885] [2023-12-21 06:54:02,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:54:02,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:54:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:54:02,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:54:02,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 07:04:41,366 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 07:04:41,373 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 07:04:42,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 07:04:42,567 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-21 07:04:42,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 07:04:42,580 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 07:04:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 07:04:42,580 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 48 with TraceHistMax 6,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-21 07:04:42,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-12-21 07:04:42,603 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-12-21 07:04:42,604 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 07:04:42,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:04:42 BoogieIcfgContainer [2023-12-21 07:04:42,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 07:04:42,606 INFO L158 Benchmark]: Toolchain (without parser) took 890557.69ms. Allocated memory was 170.9MB in the beginning and 230.7MB in the end (delta: 59.8MB). Free memory was 118.7MB in the beginning and 195.4MB in the end (delta: -76.7MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. [2023-12-21 07:04:42,606 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 170.9MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 07:04:42,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.21ms. Allocated memory is still 170.9MB. Free memory was 118.3MB in the beginning and 107.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 07:04:42,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.36ms. Allocated memory is still 170.9MB. Free memory was 107.5MB in the beginning and 106.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 07:04:42,607 INFO L158 Benchmark]: Boogie Preprocessor took 34.34ms. Allocated memory is still 170.9MB. Free memory was 106.1MB in the beginning and 104.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 07:04:42,607 INFO L158 Benchmark]: RCFGBuilder took 244.23ms. Allocated memory is still 170.9MB. Free memory was 104.4MB in the beginning and 93.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 07:04:42,607 INFO L158 Benchmark]: TraceAbstraction took 890052.37ms. Allocated memory was 170.9MB in the beginning and 230.7MB in the end (delta: 59.8MB). Free memory was 93.2MB in the beginning and 195.4MB in the end (delta: -102.2MB). Peak memory consumption was 88.8MB. Max. memory is 8.0GB. [2023-12-21 07:04:42,609 INFO L338 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 170.9MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.21ms. Allocated memory is still 170.9MB. Free memory was 118.3MB in the beginning and 107.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.36ms. Allocated memory is still 170.9MB. Free memory was 107.5MB in the beginning and 106.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.34ms. Allocated memory is still 170.9MB. Free memory was 106.1MB in the beginning and 104.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 244.23ms. Allocated memory is still 170.9MB. Free memory was 104.4MB in the beginning and 93.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 890052.37ms. Allocated memory was 170.9MB in the beginning and 230.7MB in the end (delta: 59.8MB). Free memory was 93.2MB in the beginning and 195.4MB in the end (delta: -102.2MB). Peak memory consumption was 88.8MB. 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 - TimeoutResultAtElement [Line: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 48 with TraceHistMax 6,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.0s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 44.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 36.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 292 SdHoareTripleChecker+Invalid, 36.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 232 IncrementalHoareTripleChecker+Unchecked, 222 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 70 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 47.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 36, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 203.4s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 103 ConstructedInterpolants, 3 QuantifiedInterpolants, 1042 SizeOfPredicates, 7 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 14/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown