/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/sep60-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:51:24,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:51:24,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:51:25,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 21:51:25,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:51:25,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:51:25,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:51:25,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:51:25,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:51:25,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:51:25,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:51:25,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:51:25,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:51:25,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:51:25,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:51:25,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:51:25,195 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:51:25,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:51:25,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:51:25,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:51:25,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:51:25,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:51:25,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:51:25,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:51:25,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:51:25,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:51:25,197 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:51:25,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:51:25,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:51:25,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:51:25,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:51:25,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:51:25,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:51:25,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:51:25,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:51:25,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:51:25,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:51:25,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:51:25,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:51:25,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:51:25,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:51:25,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:51:25,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:51:25,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:51:25,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:51:25,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:51:25,632 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:51:25,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep60-1.i [2022-10-15 21:51:25,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ab7c1ad/e18f297a588d4d66a29d180e82a044e6/FLAG8e7712dee [2022-10-15 21:51:26,315 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:51:26,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep60-1.i [2022-10-15 21:51:26,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ab7c1ad/e18f297a588d4d66a29d180e82a044e6/FLAG8e7712dee [2022-10-15 21:51:26,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ab7c1ad/e18f297a588d4d66a29d180e82a044e6 [2022-10-15 21:51:26,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:51:26,678 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:51:26,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:51:26,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:51:26,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:51:26,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:51:26" (1/1) ... [2022-10-15 21:51:26,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc5310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:26, skipping insertion in model container [2022-10-15 21:51:26,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:51:26" (1/1) ... [2022-10-15 21:51:26,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:51:26,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:51:26,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep60-1.i[1183,1196] [2022-10-15 21:51:26,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:51:26,927 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:51:26,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep60-1.i[1183,1196] [2022-10-15 21:51:26,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:51:27,004 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:51:27,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27 WrapperNode [2022-10-15 21:51:27,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:51:27,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:51:27,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:51:27,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:51:27,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,078 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2022-10-15 21:51:27,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:51:27,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:51:27,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:51:27,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:51:27,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:51:27,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:51:27,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:51:27,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:51:27,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (1/1) ... [2022-10-15 21:51:27,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:51:27,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:27,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:51:27,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:51:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:51:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:51:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:51:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:51:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:51:27,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:51:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:51:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:51:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-10-15 21:51:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-10-15 21:51:27,415 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:51:27,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:51:27,754 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:51:27,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:51:27,770 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 21:51:27,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:51:27 BoogieIcfgContainer [2022-10-15 21:51:27,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:51:27,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:51:27,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:51:27,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:51:27,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:51:26" (1/3) ... [2022-10-15 21:51:27,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99a4e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:51:27, skipping insertion in model container [2022-10-15 21:51:27,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:51:27" (2/3) ... [2022-10-15 21:51:27,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99a4e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:51:27, skipping insertion in model container [2022-10-15 21:51:27,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:51:27" (3/3) ... [2022-10-15 21:51:27,789 INFO L112 eAbstractionObserver]: Analyzing ICFG sep60-1.i [2022-10-15 21:51:27,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:51:27,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-15 21:51:27,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:51:27,985 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4da8f53a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:51:27,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-15 21:51:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 21:51:27,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 21:51:27,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:28,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:28,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1869679376, now seen corresponding path program 1 times [2022-10-15 21:51:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:28,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637572698] [2022-10-15 21:51:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:28,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:28,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637572698] [2022-10-15 21:51:28,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637572698] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:28,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:51:28,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:51:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913646673] [2022-10-15 21:51:28,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:28,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:51:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:51:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:51:28,356 INFO L87 Difference]: Start difference. First operand has 43 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-10-15 21:51:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:28,451 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2022-10-15 21:51:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:51:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2022-10-15 21:51:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:28,471 INFO L225 Difference]: With dead ends: 94 [2022-10-15 21:51:28,471 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 21:51:28,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:51:28,480 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:28,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 123 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 21:51:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-10-15 21:51:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-10-15 21:51:28,534 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2022-10-15 21:51:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:28,534 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-10-15 21:51:28,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-10-15 21:51:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-10-15 21:51:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 21:51:28,536 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:28,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:51:28,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1869679568, now seen corresponding path program 1 times [2022-10-15 21:51:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051971539] [2022-10-15 21:51:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051971539] [2022-10-15 21:51:28,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051971539] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:28,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:51:28,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:51:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590138842] [2022-10-15 21:51:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:28,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:51:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:51:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:51:28,680 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-10-15 21:51:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:28,733 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-10-15 21:51:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:51:28,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2022-10-15 21:51:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:28,738 INFO L225 Difference]: With dead ends: 48 [2022-10-15 21:51:28,740 INFO L226 Difference]: Without dead ends: 46 [2022-10-15 21:51:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:51:28,745 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:28,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 105 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-10-15 21:51:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-10-15 21:51:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 39 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-10-15 21:51:28,766 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2022-10-15 21:51:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:28,770 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-10-15 21:51:28,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-10-15 21:51:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-10-15 21:51:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 21:51:28,772 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:28,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:28,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:51:28,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:28,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1812485752, now seen corresponding path program 1 times [2022-10-15 21:51:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:28,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10984493] [2022-10-15 21:51:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:28,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10984493] [2022-10-15 21:51:28,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10984493] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:28,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:51:28,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:51:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336984973] [2022-10-15 21:51:28,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:28,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:51:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:51:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:51:28,966 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:29,003 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2022-10-15 21:51:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:51:29,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 21:51:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:29,005 INFO L225 Difference]: With dead ends: 86 [2022-10-15 21:51:29,005 INFO L226 Difference]: Without dead ends: 46 [2022-10-15 21:51:29,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:51:29,008 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:29,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-10-15 21:51:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-10-15 21:51:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.4375) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-10-15 21:51:29,019 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 10 [2022-10-15 21:51:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:29,019 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-10-15 21:51:29,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-10-15 21:51:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 21:51:29,020 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:29,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:29,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:51:29,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 363160759, now seen corresponding path program 1 times [2022-10-15 21:51:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:29,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578310446] [2022-10-15 21:51:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:29,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578310446] [2022-10-15 21:51:29,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578310446] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:29,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595155288] [2022-10-15 21:51:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:29,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:29,195 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) [2022-10-15 21:51:29,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:51:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:29,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:29,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:29,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:29,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595155288] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:29,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:29,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 21:51:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880745728] [2022-10-15 21:51:29,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 21:51:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 21:51:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:51:29,429 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:29,589 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2022-10-15 21:51:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 21:51:29,589 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 14 [2022-10-15 21:51:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:29,591 INFO L225 Difference]: With dead ends: 96 [2022-10-15 21:51:29,592 INFO L226 Difference]: Without dead ends: 95 [2022-10-15 21:51:29,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-15 21:51:29,595 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:29,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 258 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-15 21:51:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2022-10-15 21:51:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.5) internal successors, (78), 62 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2022-10-15 21:51:29,611 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 14 [2022-10-15 21:51:29,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:29,611 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2022-10-15 21:51:29,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2022-10-15 21:51:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 21:51:29,613 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:29,613 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:29,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 21:51:29,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:29,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 363160951, now seen corresponding path program 1 times [2022-10-15 21:51:29,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:29,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766444918] [2022-10-15 21:51:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:29,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:29,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:29,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766444918] [2022-10-15 21:51:29,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766444918] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:29,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956325943] [2022-10-15 21:51:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:29,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:29,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:29,947 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) [2022-10-15 21:51:29,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:51:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:30,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:30,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:30,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:30,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956325943] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:30,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:30,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 21:51:30,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994729704] [2022-10-15 21:51:30,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:30,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 21:51:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 21:51:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:51:30,115 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:30,344 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2022-10-15 21:51:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 21:51:30,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 14 [2022-10-15 21:51:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:30,346 INFO L225 Difference]: With dead ends: 117 [2022-10-15 21:51:30,347 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 21:51:30,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2022-10-15 21:51:30,349 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 86 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:30,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 261 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 21:51:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 79. [2022-10-15 21:51:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 75 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2022-10-15 21:51:30,365 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 14 [2022-10-15 21:51:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:30,365 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2022-10-15 21:51:30,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2022-10-15 21:51:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 21:51:30,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:30,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:30,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:30,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:30,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1626918273, now seen corresponding path program 1 times [2022-10-15 21:51:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816696590] [2022-10-15 21:51:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:30,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:30,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816696590] [2022-10-15 21:51:30,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816696590] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:30,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532296866] [2022-10-15 21:51:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:30,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:30,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:30,687 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) [2022-10-15 21:51:30,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:51:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:30,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:30,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:30,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:51:30,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532296866] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:30,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:51:30,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-15 21:51:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465908644] [2022-10-15 21:51:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:51:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:51:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:51:30,812 INFO L87 Difference]: Start difference. First operand 79 states and 106 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:30,866 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2022-10-15 21:51:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:51:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 15 [2022-10-15 21:51:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:30,868 INFO L225 Difference]: With dead ends: 98 [2022-10-15 21:51:30,868 INFO L226 Difference]: Without dead ends: 97 [2022-10-15 21:51:30,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:51:30,870 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:30,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 146 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-10-15 21:51:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2022-10-15 21:51:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 82 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2022-10-15 21:51:30,882 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 15 [2022-10-15 21:51:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:30,883 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2022-10-15 21:51:30,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2022-10-15 21:51:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 21:51:30,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:30,884 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:30,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:31,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:31,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1626912315, now seen corresponding path program 1 times [2022-10-15 21:51:31,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335740281] [2022-10-15 21:51:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:31,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:31,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335740281] [2022-10-15 21:51:31,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335740281] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:31,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663536137] [2022-10-15 21:51:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:31,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:31,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:31,190 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) [2022-10-15 21:51:31,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 21:51:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:31,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:31,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:31,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:51:31,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663536137] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:31,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:51:31,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-15 21:51:31,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878228208] [2022-10-15 21:51:31,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:31,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:51:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:51:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:51:31,292 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:31,370 INFO L93 Difference]: Finished difference Result 135 states and 183 transitions. [2022-10-15 21:51:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:51:31,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 15 [2022-10-15 21:51:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:31,372 INFO L225 Difference]: With dead ends: 135 [2022-10-15 21:51:31,372 INFO L226 Difference]: Without dead ends: 133 [2022-10-15 21:51:31,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:51:31,374 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:31,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 178 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-10-15 21:51:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 107. [2022-10-15 21:51:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 94 states have (on average 1.5319148936170213) internal successors, (144), 103 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 149 transitions. [2022-10-15 21:51:31,387 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 149 transitions. Word has length 15 [2022-10-15 21:51:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:31,388 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 149 transitions. [2022-10-15 21:51:31,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:31,388 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 149 transitions. [2022-10-15 21:51:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 21:51:31,389 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:31,389 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:31,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-15 21:51:31,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:31,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1101103225, now seen corresponding path program 1 times [2022-10-15 21:51:31,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:31,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663165942] [2022-10-15 21:51:31,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:31,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663165942] [2022-10-15 21:51:31,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663165942] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:31,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140906949] [2022-10-15 21:51:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:31,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:31,750 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) [2022-10-15 21:51:31,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 21:51:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:31,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:31,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:31,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:31,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140906949] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:31,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:31,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 21:51:31,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449434844] [2022-10-15 21:51:31,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:31,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 21:51:31,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:31,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 21:51:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:51:31,922 INFO L87 Difference]: Start difference. First operand 107 states and 149 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:32,080 INFO L93 Difference]: Finished difference Result 157 states and 219 transitions. [2022-10-15 21:51:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 21:51:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 15 [2022-10-15 21:51:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:32,082 INFO L225 Difference]: With dead ends: 157 [2022-10-15 21:51:32,082 INFO L226 Difference]: Without dead ends: 155 [2022-10-15 21:51:32,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-10-15 21:51:32,084 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 105 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:32,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 165 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-10-15 21:51:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 106. [2022-10-15 21:51:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 102 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 147 transitions. [2022-10-15 21:51:32,098 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 147 transitions. Word has length 15 [2022-10-15 21:51:32,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:32,099 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 147 transitions. [2022-10-15 21:51:32,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:32,099 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 147 transitions. [2022-10-15 21:51:32,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 21:51:32,100 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:32,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:32,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 21:51:32,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:32,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1101109183, now seen corresponding path program 1 times [2022-10-15 21:51:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:32,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708252270] [2022-10-15 21:51:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:32,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708252270] [2022-10-15 21:51:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708252270] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896385755] [2022-10-15 21:51:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:32,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:32,396 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) [2022-10-15 21:51:32,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 21:51:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:32,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:32,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:32,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:32,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896385755] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:32,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:32,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 21:51:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554826492] [2022-10-15 21:51:32,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:32,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 21:51:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 21:51:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:51:32,567 INFO L87 Difference]: Start difference. First operand 106 states and 147 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:32,657 INFO L93 Difference]: Finished difference Result 144 states and 196 transitions. [2022-10-15 21:51:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 21:51:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 15 [2022-10-15 21:51:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:32,660 INFO L225 Difference]: With dead ends: 144 [2022-10-15 21:51:32,660 INFO L226 Difference]: Without dead ends: 143 [2022-10-15 21:51:32,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-10-15 21:51:32,661 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 48 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:32,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 262 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-10-15 21:51:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 124. [2022-10-15 21:51:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.5178571428571428) internal successors, (170), 120 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 175 transitions. [2022-10-15 21:51:32,675 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 175 transitions. Word has length 15 [2022-10-15 21:51:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:32,675 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 175 transitions. [2022-10-15 21:51:32,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 175 transitions. [2022-10-15 21:51:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 21:51:32,677 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:32,677 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:32,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 21:51:32,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:32,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash -100361599, now seen corresponding path program 1 times [2022-10-15 21:51:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053765410] [2022-10-15 21:51:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:51:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053765410] [2022-10-15 21:51:32,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053765410] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:32,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:51:32,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:51:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901206728] [2022-10-15 21:51:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:32,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:51:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:51:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:51:32,938 INFO L87 Difference]: Start difference. First operand 124 states and 175 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:32,958 INFO L93 Difference]: Finished difference Result 124 states and 175 transitions. [2022-10-15 21:51:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:51:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 17 [2022-10-15 21:51:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:32,960 INFO L225 Difference]: With dead ends: 124 [2022-10-15 21:51:32,960 INFO L226 Difference]: Without dead ends: 123 [2022-10-15 21:51:32,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:51:32,962 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:32,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-10-15 21:51:32,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-10-15 21:51:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 112 states have (on average 1.4196428571428572) internal successors, (159), 119 states have internal predecessors, (159), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2022-10-15 21:51:32,972 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 17 [2022-10-15 21:51:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:32,972 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2022-10-15 21:51:32,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:32,973 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2022-10-15 21:51:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 21:51:32,974 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:32,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:32,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 21:51:32,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1183757825, now seen corresponding path program 1 times [2022-10-15 21:51:32,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:32,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985553413] [2022-10-15 21:51:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:33,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:33,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985553413] [2022-10-15 21:51:33,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985553413] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:33,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998314752] [2022-10-15 21:51:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:33,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:33,044 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) [2022-10-15 21:51:33,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 21:51:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:33,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:51:33,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:33,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:51:33,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998314752] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:33,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:51:33,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-15 21:51:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227417961] [2022-10-15 21:51:33,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:51:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:33,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:51:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:51:33,137 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:33,176 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2022-10-15 21:51:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:51:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 18 [2022-10-15 21:51:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:33,178 INFO L225 Difference]: With dead ends: 123 [2022-10-15 21:51:33,178 INFO L226 Difference]: Without dead ends: 122 [2022-10-15 21:51:33,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:51:33,179 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:33,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 141 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:33,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-10-15 21:51:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-10-15 21:51:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 112 states have (on average 1.3214285714285714) internal successors, (148), 118 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2022-10-15 21:51:33,188 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 18 [2022-10-15 21:51:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:33,189 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2022-10-15 21:51:33,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2022-10-15 21:51:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 21:51:33,190 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:33,190 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:33,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:33,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1993237590, now seen corresponding path program 1 times [2022-10-15 21:51:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:33,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743096235] [2022-10-15 21:51:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:33,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:33,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743096235] [2022-10-15 21:51:33,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743096235] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:33,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575900350] [2022-10-15 21:51:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:33,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:33,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:33,510 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:33,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 21:51:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:33,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 21:51:33,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:33,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:33,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575900350] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:33,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:33,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-10-15 21:51:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102541594] [2022-10-15 21:51:33,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 21:51:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 21:51:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:51:33,680 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:33,892 INFO L93 Difference]: Finished difference Result 218 states and 277 transitions. [2022-10-15 21:51:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-15 21:51:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 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 21 [2022-10-15 21:51:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:33,894 INFO L225 Difference]: With dead ends: 218 [2022-10-15 21:51:33,894 INFO L226 Difference]: Without dead ends: 217 [2022-10-15 21:51:33,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:51:33,896 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:33,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 275 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-10-15 21:51:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 160. [2022-10-15 21:51:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 1.3133333333333332) internal successors, (197), 156 states have internal predecessors, (197), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2022-10-15 21:51:33,909 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 21 [2022-10-15 21:51:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:33,909 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2022-10-15 21:51:33,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2022-10-15 21:51:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 21:51:33,910 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:33,910 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:33,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-15 21:51:34,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 21:51:34,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash -149857690, now seen corresponding path program 1 times [2022-10-15 21:51:34,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:34,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821813323] [2022-10-15 21:51:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:34,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821813323] [2022-10-15 21:51:34,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821813323] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991927991] [2022-10-15 21:51:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:34,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:34,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:34,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:34,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 21:51:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:34,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 21:51:34,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:34,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:34,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991927991] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:34,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:34,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-10-15 21:51:34,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545764118] [2022-10-15 21:51:34,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:34,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 21:51:34,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 21:51:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:51:34,410 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:34,645 INFO L93 Difference]: Finished difference Result 278 states and 354 transitions. [2022-10-15 21:51:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-15 21:51:34,646 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 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 22 [2022-10-15 21:51:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:34,648 INFO L225 Difference]: With dead ends: 278 [2022-10-15 21:51:34,648 INFO L226 Difference]: Without dead ends: 277 [2022-10-15 21:51:34,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:51:34,650 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 54 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:34,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 246 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-10-15 21:51:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 197. [2022-10-15 21:51:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 187 states have (on average 1.2994652406417113) internal successors, (243), 193 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 248 transitions. [2022-10-15 21:51:34,669 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 248 transitions. Word has length 22 [2022-10-15 21:51:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:34,669 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 248 transitions. [2022-10-15 21:51:34,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 248 transitions. [2022-10-15 21:51:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 21:51:34,671 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:34,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:34,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 21:51:34,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1482381416, now seen corresponding path program 1 times [2022-10-15 21:51:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:34,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592811841] [2022-10-15 21:51:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:51:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:51:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:34,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:34,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592811841] [2022-10-15 21:51:34,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592811841] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:34,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215081317] [2022-10-15 21:51:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:34,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:34,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:34,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:35,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 21:51:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:51:35,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 21:51:35,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:51:35,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215081317] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:35,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:51:35,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-10-15 21:51:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535089296] [2022-10-15 21:51:35,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:35,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:51:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:51:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:51:35,083 INFO L87 Difference]: Start difference. First operand 197 states and 248 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:35,110 INFO L93 Difference]: Finished difference Result 387 states and 488 transitions. [2022-10-15 21:51:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:51:35,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-10-15 21:51:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:35,116 INFO L225 Difference]: With dead ends: 387 [2022-10-15 21:51:35,116 INFO L226 Difference]: Without dead ends: 205 [2022-10-15 21:51:35,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:51:35,119 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:35,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-10-15 21:51:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2022-10-15 21:51:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 189 states have (on average 1.2962962962962963) internal successors, (245), 195 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2022-10-15 21:51:35,133 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 32 [2022-10-15 21:51:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:35,134 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2022-10-15 21:51:35,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2022-10-15 21:51:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 21:51:35,138 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:35,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:35,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:35,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 21:51:35,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1290816408, now seen corresponding path program 1 times [2022-10-15 21:51:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:35,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709125339] [2022-10-15 21:51:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:51:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:51:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709125339] [2022-10-15 21:51:35,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709125339] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149981105] [2022-10-15 21:51:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:35,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:35,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 21:51:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:51:35,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 21:51:35,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:51:35,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149981105] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:35,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:51:35,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-10-15 21:51:35,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360072633] [2022-10-15 21:51:35,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:35,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:51:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:51:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:51:35,534 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:35,557 INFO L93 Difference]: Finished difference Result 206 states and 257 transitions. [2022-10-15 21:51:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:51:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2022-10-15 21:51:35,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:35,559 INFO L225 Difference]: With dead ends: 206 [2022-10-15 21:51:35,559 INFO L226 Difference]: Without dead ends: 205 [2022-10-15 21:51:35,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:51:35,560 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:35,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-10-15 21:51:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 200. [2022-10-15 21:51:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 190 states have (on average 1.2947368421052632) internal successors, (246), 196 states have internal predecessors, (246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 251 transitions. [2022-10-15 21:51:35,574 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 251 transitions. Word has length 33 [2022-10-15 21:51:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:35,574 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 251 transitions. [2022-10-15 21:51:35,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 251 transitions. [2022-10-15 21:51:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 21:51:35,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:35,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:35,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:35,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 21:51:35,790 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:35,791 INFO L85 PathProgramCache]: Analyzing trace with hash -770978854, now seen corresponding path program 1 times [2022-10-15 21:51:35,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:35,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483709191] [2022-10-15 21:51:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:35,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:51:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:51:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:35,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483709191] [2022-10-15 21:51:35,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483709191] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:35,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934325793] [2022-10-15 21:51:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:35,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:35,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 21:51:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:35,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:51:35,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:51:35,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:36,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934325793] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:36,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:36,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-15 21:51:36,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072570321] [2022-10-15 21:51:36,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:36,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:51:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:51:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:51:36,006 INFO L87 Difference]: Start difference. First operand 200 states and 251 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:51:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:36,051 INFO L93 Difference]: Finished difference Result 409 states and 514 transitions. [2022-10-15 21:51:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:51:36,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-10-15 21:51:36,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:36,053 INFO L225 Difference]: With dead ends: 409 [2022-10-15 21:51:36,053 INFO L226 Difference]: Without dead ends: 212 [2022-10-15 21:51:36,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:51:36,055 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:36,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 159 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-15 21:51:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-10-15 21:51:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 202 states have (on average 1.2574257425742574) internal successors, (254), 208 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 259 transitions. [2022-10-15 21:51:36,070 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 259 transitions. Word has length 35 [2022-10-15 21:51:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:36,071 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 259 transitions. [2022-10-15 21:51:36,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:51:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 259 transitions. [2022-10-15 21:51:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 21:51:36,072 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:36,072 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 21:51:36,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:36,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 21:51:36,287 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1138745520, now seen corresponding path program 2 times [2022-10-15 21:51:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:36,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591876819] [2022-10-15 21:51:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591876819] [2022-10-15 21:51:36,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591876819] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088848561] [2022-10-15 21:51:36,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:51:36,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:36,526 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:36,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 21:51:36,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:51:36,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:36,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 21:51:36,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:36,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:36,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088848561] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:36,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:36,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-15 21:51:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681660430] [2022-10-15 21:51:36,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:36,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 21:51:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 21:51:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-15 21:51:36,847 INFO L87 Difference]: Start difference. First operand 212 states and 259 transitions. Second operand has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:37,080 INFO L93 Difference]: Finished difference Result 294 states and 365 transitions. [2022-10-15 21:51:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 21:51:37,080 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 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 35 [2022-10-15 21:51:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:37,083 INFO L225 Difference]: With dead ends: 294 [2022-10-15 21:51:37,083 INFO L226 Difference]: Without dead ends: 293 [2022-10-15 21:51:37,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 21:51:37,085 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 159 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:37,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 247 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-10-15 21:51:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 254. [2022-10-15 21:51:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 244 states have (on average 1.2622950819672132) internal successors, (308), 250 states have internal predecessors, (308), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 313 transitions. [2022-10-15 21:51:37,118 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 313 transitions. Word has length 35 [2022-10-15 21:51:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:37,119 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 313 transitions. [2022-10-15 21:51:37,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 313 transitions. [2022-10-15 21:51:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 21:51:37,121 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:37,121 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:37,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:37,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-15 21:51:37,335 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash -496555498, now seen corresponding path program 2 times [2022-10-15 21:51:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:37,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168061438] [2022-10-15 21:51:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:51:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168061438] [2022-10-15 21:51:37,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168061438] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:37,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987117457] [2022-10-15 21:51:37,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:51:37,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:37,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:37,511 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:37,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 21:51:37,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:51:37,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:37,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 21:51:37,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:51:37,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:51:37,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987117457] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:37,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:37,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-15 21:51:37,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137847043] [2022-10-15 21:51:37,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 21:51:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 21:51:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-10-15 21:51:37,781 INFO L87 Difference]: Start difference. First operand 254 states and 313 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:38,060 INFO L93 Difference]: Finished difference Result 461 states and 582 transitions. [2022-10-15 21:51:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-15 21:51:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 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 35 [2022-10-15 21:51:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:38,064 INFO L225 Difference]: With dead ends: 461 [2022-10-15 21:51:38,064 INFO L226 Difference]: Without dead ends: 460 [2022-10-15 21:51:38,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332 [2022-10-15 21:51:38,066 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 101 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:38,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 309 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-10-15 21:51:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 317. [2022-10-15 21:51:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 307 states have (on average 1.270358306188925) internal successors, (390), 313 states have internal predecessors, (390), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 395 transitions. [2022-10-15 21:51:38,089 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 395 transitions. Word has length 35 [2022-10-15 21:51:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:38,089 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 395 transitions. [2022-10-15 21:51:38,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 395 transitions. [2022-10-15 21:51:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 21:51:38,091 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:38,091 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:38,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-10-15 21:51:38,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:38,306 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash 745088850, now seen corresponding path program 2 times [2022-10-15 21:51:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:38,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587325411] [2022-10-15 21:51:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:38,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 21:51:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:38,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587325411] [2022-10-15 21:51:38,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587325411] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:38,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244925598] [2022-10-15 21:51:38,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:51:38,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:38,486 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:38,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 21:51:38,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:51:38,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:38,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 21:51:38,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 21:51:38,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 21:51:38,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244925598] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:38,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:38,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-10-15 21:51:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716958589] [2022-10-15 21:51:38,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 21:51:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:38,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 21:51:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-10-15 21:51:38,709 INFO L87 Difference]: Start difference. First operand 317 states and 395 transitions. Second operand has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:38,971 INFO L93 Difference]: Finished difference Result 597 states and 753 transitions. [2022-10-15 21:51:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-15 21:51:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 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 36 [2022-10-15 21:51:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:38,975 INFO L225 Difference]: With dead ends: 597 [2022-10-15 21:51:38,975 INFO L226 Difference]: Without dead ends: 596 [2022-10-15 21:51:38,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2022-10-15 21:51:38,977 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:38,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 283 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-10-15 21:51:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 409. [2022-10-15 21:51:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 399 states have (on average 1.2706766917293233) internal successors, (507), 405 states have internal predecessors, (507), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 512 transitions. [2022-10-15 21:51:39,008 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 512 transitions. Word has length 36 [2022-10-15 21:51:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:39,009 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 512 transitions. [2022-10-15 21:51:39,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 512 transitions. [2022-10-15 21:51:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 21:51:39,010 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:39,010 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:39,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:39,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:39,224 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 509726269, now seen corresponding path program 3 times [2022-10-15 21:51:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:39,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838513076] [2022-10-15 21:51:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:39,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:51:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838513076] [2022-10-15 21:51:39,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838513076] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:39,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119542254] [2022-10-15 21:51:39,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 21:51:39,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:39,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:39,456 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:39,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-15 21:51:39,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-15 21:51:39,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:39,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 21:51:39,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:39,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:51:39,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119542254] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:39,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:39,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-10-15 21:51:39,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69227850] [2022-10-15 21:51:39,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:39,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-15 21:51:39,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:39,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-15 21:51:39,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:51:39,811 INFO L87 Difference]: Start difference. First operand 409 states and 512 transitions. Second operand has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:40,302 INFO L93 Difference]: Finished difference Result 748 states and 945 transitions. [2022-10-15 21:51:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 21:51:40,303 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 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 42 [2022-10-15 21:51:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:40,307 INFO L225 Difference]: With dead ends: 748 [2022-10-15 21:51:40,307 INFO L226 Difference]: Without dead ends: 747 [2022-10-15 21:51:40,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=605, Invalid=2151, Unknown=0, NotChecked=0, Total=2756 [2022-10-15 21:51:40,310 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 168 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:40,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 451 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-10-15 21:51:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 421. [2022-10-15 21:51:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 411 states have (on average 1.27007299270073) internal successors, (522), 417 states have internal predecessors, (522), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 527 transitions. [2022-10-15 21:51:40,345 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 527 transitions. Word has length 42 [2022-10-15 21:51:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:40,346 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 527 transitions. [2022-10-15 21:51:40,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 527 transitions. [2022-10-15 21:51:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:51:40,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:40,348 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 21:51:40,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:40,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:40,562 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1421408848, now seen corresponding path program 4 times [2022-10-15 21:51:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:40,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589859264] [2022-10-15 21:51:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:40,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 73 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 21:51:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:40,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589859264] [2022-10-15 21:51:40,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589859264] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:40,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944835031] [2022-10-15 21:51:40,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 21:51:40,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:40,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:40,810 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:40,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-15 21:51:40,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 21:51:40,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:40,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 21:51:40,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:51:40,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:51:41,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944835031] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:41,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:41,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2022-10-15 21:51:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985558874] [2022-10-15 21:51:41,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:41,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 21:51:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 21:51:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-10-15 21:51:41,064 INFO L87 Difference]: Start difference. First operand 421 states and 527 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:41,396 INFO L93 Difference]: Finished difference Result 1106 states and 1404 transitions. [2022-10-15 21:51:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-15 21:51:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 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 49 [2022-10-15 21:51:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:41,404 INFO L225 Difference]: With dead ends: 1106 [2022-10-15 21:51:41,404 INFO L226 Difference]: Without dead ends: 1105 [2022-10-15 21:51:41,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2022-10-15 21:51:41,406 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 105 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:41,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 296 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-10-15 21:51:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 774. [2022-10-15 21:51:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.281413612565445) internal successors, (979), 770 states have internal predecessors, (979), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 984 transitions. [2022-10-15 21:51:41,479 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 984 transitions. Word has length 49 [2022-10-15 21:51:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:41,479 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 984 transitions. [2022-10-15 21:51:41,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 984 transitions. [2022-10-15 21:51:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 21:51:41,481 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:41,481 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 21:51:41,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:41,694 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:41,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:41,695 INFO L85 PathProgramCache]: Analyzing trace with hash 449230892, now seen corresponding path program 3 times [2022-10-15 21:51:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:41,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612006559] [2022-10-15 21:51:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:41,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:51:41,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:41,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612006559] [2022-10-15 21:51:41,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612006559] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:41,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066821936] [2022-10-15 21:51:41,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 21:51:41,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:41,978 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:41,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-15 21:51:42,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-15 21:51:42,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:42,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 21:51:42,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-15 21:51:42,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:51:42,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066821936] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:42,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:51:42,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2022-10-15 21:51:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241683499] [2022-10-15 21:51:42,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:42,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:51:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:51:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-10-15 21:51:42,093 INFO L87 Difference]: Start difference. First operand 774 states and 984 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:42,203 INFO L93 Difference]: Finished difference Result 862 states and 1090 transitions. [2022-10-15 21:51:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:51:42,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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 50 [2022-10-15 21:51:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:42,208 INFO L225 Difference]: With dead ends: 862 [2022-10-15 21:51:42,209 INFO L226 Difference]: Without dead ends: 861 [2022-10-15 21:51:42,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-10-15 21:51:42,211 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:42,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 115 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-10-15 21:51:42,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 784. [2022-10-15 21:51:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 774 states have (on average 1.2790697674418605) internal successors, (990), 780 states have internal predecessors, (990), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 995 transitions. [2022-10-15 21:51:42,285 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 995 transitions. Word has length 50 [2022-10-15 21:51:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:42,285 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 995 transitions. [2022-10-15 21:51:42,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 995 transitions. [2022-10-15 21:51:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 21:51:42,287 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:42,288 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:42,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:42,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:42,504 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1117714906, now seen corresponding path program 4 times [2022-10-15 21:51:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:42,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263546935] [2022-10-15 21:51:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263546935] [2022-10-15 21:51:42,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263546935] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:42,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867524438] [2022-10-15 21:51:42,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 21:51:42,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:42,746 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:42,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-15 21:51:42,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 21:51:42,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:42,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 21:51:42,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:42,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:43,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867524438] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:43,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:43,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2022-10-15 21:51:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902948379] [2022-10-15 21:51:43,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:43,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-15 21:51:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-15 21:51:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:51:43,093 INFO L87 Difference]: Start difference. First operand 784 states and 995 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:43,564 INFO L93 Difference]: Finished difference Result 1726 states and 2192 transitions. [2022-10-15 21:51:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 21:51:43,564 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 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 50 [2022-10-15 21:51:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:43,573 INFO L225 Difference]: With dead ends: 1726 [2022-10-15 21:51:43,574 INFO L226 Difference]: Without dead ends: 1725 [2022-10-15 21:51:43,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=1522, Unknown=0, NotChecked=0, Total=1980 [2022-10-15 21:51:43,577 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 168 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:43,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 345 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2022-10-15 21:51:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 910. [2022-10-15 21:51:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 900 states have (on average 1.28) internal successors, (1152), 906 states have internal predecessors, (1152), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1157 transitions. [2022-10-15 21:51:43,666 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1157 transitions. Word has length 50 [2022-10-15 21:51:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:43,667 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1157 transitions. [2022-10-15 21:51:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1157 transitions. [2022-10-15 21:51:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-15 21:51:43,670 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:43,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:43,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:43,886 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1689695194, now seen corresponding path program 2 times [2022-10-15 21:51:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:43,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495270322] [2022-10-15 21:51:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:51:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:51:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:51:43,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:43,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495270322] [2022-10-15 21:51:43,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495270322] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:43,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:51:43,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:51:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047299140] [2022-10-15 21:51:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:51:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:51:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:51:43,993 INFO L87 Difference]: Start difference. First operand 910 states and 1157 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:44,109 INFO L93 Difference]: Finished difference Result 915 states and 1162 transitions. [2022-10-15 21:51:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:51:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-10-15 21:51:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:44,115 INFO L225 Difference]: With dead ends: 915 [2022-10-15 21:51:44,115 INFO L226 Difference]: Without dead ends: 913 [2022-10-15 21:51:44,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:51:44,117 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:44,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-10-15 21:51:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2022-10-15 21:51:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 903 states have (on average 1.2790697674418605) internal successors, (1155), 909 states have internal predecessors, (1155), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1160 transitions. [2022-10-15 21:51:44,216 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1160 transitions. Word has length 63 [2022-10-15 21:51:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:44,216 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1160 transitions. [2022-10-15 21:51:44,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1160 transitions. [2022-10-15 21:51:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-15 21:51:44,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:44,219 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-15 21:51:44,220 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2112142858, now seen corresponding path program 5 times [2022-10-15 21:51:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889246344] [2022-10-15 21:51:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 5 proven. 188 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:44,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:44,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889246344] [2022-10-15 21:51:44,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889246344] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:44,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608684628] [2022-10-15 21:51:44,547 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 21:51:44,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:44,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:44,549 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:44,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-15 21:51:44,623 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-10-15 21:51:44,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:44,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 21:51:44,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 5 proven. 188 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:44,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 5 proven. 188 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:45,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608684628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:45,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:45,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-10-15 21:51:45,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592291571] [2022-10-15 21:51:45,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:45,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 21:51:45,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 21:51:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 21:51:45,023 INFO L87 Difference]: Start difference. First operand 913 states and 1160 transitions. Second operand has 34 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:45,684 INFO L93 Difference]: Finished difference Result 2029 states and 2570 transitions. [2022-10-15 21:51:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-15 21:51:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 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 63 [2022-10-15 21:51:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:45,695 INFO L225 Difference]: With dead ends: 2029 [2022-10-15 21:51:45,695 INFO L226 Difference]: Without dead ends: 2028 [2022-10-15 21:51:45,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=868, Invalid=3038, Unknown=0, NotChecked=0, Total=3906 [2022-10-15 21:51:45,699 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 242 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:45,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 243 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-10-15 21:51:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1569. [2022-10-15 21:51:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1559 states have (on average 1.2822322001282873) internal successors, (1999), 1565 states have internal predecessors, (1999), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2004 transitions. [2022-10-15 21:51:45,887 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2004 transitions. Word has length 63 [2022-10-15 21:51:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:45,887 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2004 transitions. [2022-10-15 21:51:45,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2004 transitions. [2022-10-15 21:51:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-15 21:51:45,892 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:45,892 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 6, 6, 5, 3, 3, 3, 1, 1, 1, 1, 1] [2022-10-15 21:51:45,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:46,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-15 21:51:46,107 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1046496250, now seen corresponding path program 5 times [2022-10-15 21:51:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:46,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390430550] [2022-10-15 21:51:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 153 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 21:51:46,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:46,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390430550] [2022-10-15 21:51:46,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390430550] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481085524] [2022-10-15 21:51:46,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 21:51:46,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:46,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:46,412 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:46,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-15 21:51:46,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-10-15 21:51:46,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:46,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 21:51:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-15 21:51:46,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-15 21:51:46,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481085524] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:46,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:46,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-10-15 21:51:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271397578] [2022-10-15 21:51:46,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-15 21:51:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-15 21:51:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:51:46,858 INFO L87 Difference]: Start difference. First operand 1569 states and 2004 transitions. Second operand has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:47,557 INFO L93 Difference]: Finished difference Result 4714 states and 6025 transitions. [2022-10-15 21:51:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-15 21:51:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 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 64 [2022-10-15 21:51:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:47,579 INFO L225 Difference]: With dead ends: 4714 [2022-10-15 21:51:47,579 INFO L226 Difference]: Without dead ends: 4713 [2022-10-15 21:51:47,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=487, Invalid=1769, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 21:51:47,582 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 119 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:47,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 275 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2022-10-15 21:51:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 3094. [2022-10-15 21:51:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3084 states have (on average 1.2833981841763944) internal successors, (3958), 3090 states have internal predecessors, (3958), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3963 transitions. [2022-10-15 21:51:47,916 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3963 transitions. Word has length 64 [2022-10-15 21:51:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:47,917 INFO L495 AbstractCegarLoop]: Abstraction has 3094 states and 3963 transitions. [2022-10-15 21:51:47,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3963 transitions. [2022-10-15 21:51:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-15 21:51:47,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:47,922 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:47,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:48,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-15 21:51:48,135 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1653330414, now seen corresponding path program 6 times [2022-10-15 21:51:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:48,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115436251] [2022-10-15 21:51:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:48,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 195 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115436251] [2022-10-15 21:51:48,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115436251] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436231806] [2022-10-15 21:51:48,454 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 21:51:48,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:48,458 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:48,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-15 21:51:48,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-10-15 21:51:48,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:48,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 21:51:48,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 195 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:48,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 195 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:48,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436231806] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:48,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:48,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-10-15 21:51:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332674269] [2022-10-15 21:51:48,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 21:51:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 21:51:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 21:51:48,952 INFO L87 Difference]: Start difference. First operand 3094 states and 3963 transitions. Second operand has 34 states, 33 states have (on average 3.242424242424242) internal successors, (107), 34 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:49,915 INFO L93 Difference]: Finished difference Result 6948 states and 8801 transitions. [2022-10-15 21:51:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-15 21:51:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.242424242424242) internal successors, (107), 34 states have internal predecessors, (107), 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 64 [2022-10-15 21:51:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:49,950 INFO L225 Difference]: With dead ends: 6948 [2022-10-15 21:51:49,951 INFO L226 Difference]: Without dead ends: 6947 [2022-10-15 21:51:49,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=814, Invalid=2726, Unknown=0, NotChecked=0, Total=3540 [2022-10-15 21:51:49,955 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 210 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:49,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 388 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:51:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2022-10-15 21:51:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 4623. [2022-10-15 21:51:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4613 states have (on average 1.2844136137004118) internal successors, (5925), 4619 states have internal predecessors, (5925), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 5930 transitions. [2022-10-15 21:51:50,424 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 5930 transitions. Word has length 64 [2022-10-15 21:51:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:50,424 INFO L495 AbstractCegarLoop]: Abstraction has 4623 states and 5930 transitions. [2022-10-15 21:51:50,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.242424242424242) internal successors, (107), 34 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 5930 transitions. [2022-10-15 21:51:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 21:51:50,430 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:50,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:50,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-15 21:51:50,646 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash 692868638, now seen corresponding path program 1 times [2022-10-15 21:51:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:50,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476104037] [2022-10-15 21:51:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:51:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:51:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-10-15 21:51:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:50,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476104037] [2022-10-15 21:51:50,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476104037] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:51:50,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:51:50,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 21:51:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218557855] [2022-10-15 21:51:50,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:51:50,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:51:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:51:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:51:50,717 INFO L87 Difference]: Start difference. First operand 4623 states and 5930 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:51,049 INFO L93 Difference]: Finished difference Result 4623 states and 5930 transitions. [2022-10-15 21:51:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:51:51,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-10-15 21:51:51,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:51,070 INFO L225 Difference]: With dead ends: 4623 [2022-10-15 21:51:51,070 INFO L226 Difference]: Without dead ends: 4622 [2022-10-15 21:51:51,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:51:51,072 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:51,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 55 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:51:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-10-15 21:51:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4622. [2022-10-15 21:51:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4613 states have (on average 1.284196835031433) internal successors, (5924), 4618 states have internal predecessors, (5924), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 5929 transitions. [2022-10-15 21:51:51,569 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 5929 transitions. Word has length 66 [2022-10-15 21:51:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:51,569 INFO L495 AbstractCegarLoop]: Abstraction has 4622 states and 5929 transitions. [2022-10-15 21:51:51,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:51:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 5929 transitions. [2022-10-15 21:51:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-15 21:51:51,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:51,575 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:51,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-15 21:51:51,576 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 4091346, now seen corresponding path program 1 times [2022-10-15 21:51:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855863924] [2022-10-15 21:51:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:51,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:51:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:51:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:51:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:51,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855863924] [2022-10-15 21:51:51,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855863924] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:51,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072008321] [2022-10-15 21:51:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:51,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:51,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:51,690 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:51,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-15 21:51:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:51,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 21:51:51,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 71 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 21:51:51,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 21:51:51,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072008321] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:51,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:51,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 19 [2022-10-15 21:51:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046277084] [2022-10-15 21:51:51,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:51,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 21:51:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 21:51:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-10-15 21:51:51,967 INFO L87 Difference]: Start difference. First operand 4622 states and 5929 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:51:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:52,546 INFO L93 Difference]: Finished difference Result 9939 states and 12714 transitions. [2022-10-15 21:51:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 21:51:52,546 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2022-10-15 21:51:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:52,563 INFO L225 Difference]: With dead ends: 9939 [2022-10-15 21:51:52,563 INFO L226 Difference]: Without dead ends: 5320 [2022-10-15 21:51:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:51:52,581 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 140 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:52,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 209 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:51:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2022-10-15 21:51:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 5315. [2022-10-15 21:51:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5306 states have (on average 1.255748209574067) internal successors, (6663), 5311 states have internal predecessors, (6663), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 6668 transitions. [2022-10-15 21:51:53,107 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 6668 transitions. Word has length 67 [2022-10-15 21:51:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:53,107 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 6668 transitions. [2022-10-15 21:51:53,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:51:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 6668 transitions. [2022-10-15 21:51:53,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:51:53,114 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:53,114 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 21:51:53,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:53,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:53,328 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:53,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:53,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1872915465, now seen corresponding path program 6 times [2022-10-15 21:51:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:53,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203601997] [2022-10-15 21:51:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 10 proven. 210 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 21:51:53,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203601997] [2022-10-15 21:51:53,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203601997] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061336024] [2022-10-15 21:51:53,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 21:51:53,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:53,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:53,663 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:53,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-15 21:51:53,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-10-15 21:51:53,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:51:53,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-15 21:51:53,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 10 proven. 210 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 21:51:53,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 10 proven. 210 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-15 21:51:54,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061336024] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:54,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:54,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-10-15 21:51:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412331537] [2022-10-15 21:51:54,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:54,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-15 21:51:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-15 21:51:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2022-10-15 21:51:54,160 INFO L87 Difference]: Start difference. First operand 5315 states and 6668 transitions. Second operand has 32 states, 31 states have (on average 3.129032258064516) internal successors, (97), 32 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:55,031 INFO L93 Difference]: Finished difference Result 8135 states and 10208 transitions. [2022-10-15 21:51:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-15 21:51:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.129032258064516) internal successors, (97), 32 states have internal predecessors, (97), 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 70 [2022-10-15 21:51:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:55,045 INFO L225 Difference]: With dead ends: 8135 [2022-10-15 21:51:55,045 INFO L226 Difference]: Without dead ends: 8134 [2022-10-15 21:51:55,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=689, Invalid=2503, Unknown=0, NotChecked=0, Total=3192 [2022-10-15 21:51:55,050 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 212 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:55,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 446 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:51:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2022-10-15 21:51:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 4037. [2022-10-15 21:51:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4037 states, 4028 states have (on average 1.2517378351539226) internal successors, (5042), 4033 states have internal predecessors, (5042), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 5047 transitions. [2022-10-15 21:51:55,499 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 5047 transitions. Word has length 70 [2022-10-15 21:51:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:55,499 INFO L495 AbstractCegarLoop]: Abstraction has 4037 states and 5047 transitions. [2022-10-15 21:51:55,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.129032258064516) internal successors, (97), 32 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:55,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 5047 transitions. [2022-10-15 21:51:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-15 21:51:55,506 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:55,507 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 21:51:55,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:55,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:55,723 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash -392798148, now seen corresponding path program 7 times [2022-10-15 21:51:55,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:55,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415595779] [2022-10-15 21:51:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 10 proven. 284 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 21:51:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:56,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415595779] [2022-10-15 21:51:56,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415595779] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:56,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052563082] [2022-10-15 21:51:56,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 21:51:56,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:56,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:56,115 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:56,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-15 21:51:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:56,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 21:51:56,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 10 proven. 280 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 21:51:56,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:51:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 10 proven. 280 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 21:51:56,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052563082] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:51:56,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:51:56,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 35 [2022-10-15 21:51:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858522094] [2022-10-15 21:51:56,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:51:56,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-10-15 21:51:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:51:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-10-15 21:51:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2022-10-15 21:51:56,695 INFO L87 Difference]: Start difference. First operand 4037 states and 5047 transitions. Second operand has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 36 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:51:57,959 INFO L93 Difference]: Finished difference Result 10313 states and 12962 transitions. [2022-10-15 21:51:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-15 21:51:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 36 states have internal predecessors, (117), 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 77 [2022-10-15 21:51:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:51:57,979 INFO L225 Difference]: With dead ends: 10313 [2022-10-15 21:51:57,979 INFO L226 Difference]: Without dead ends: 10312 [2022-10-15 21:51:57,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=963, Invalid=3327, Unknown=0, NotChecked=0, Total=4290 [2022-10-15 21:51:57,986 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 228 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:51:57,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 436 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:51:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10312 states. [2022-10-15 21:51:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10312 to 7247. [2022-10-15 21:51:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 7238 states have (on average 1.264990328820116) internal successors, (9156), 7243 states have internal predecessors, (9156), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:51:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 9161 transitions. [2022-10-15 21:51:58,711 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 9161 transitions. Word has length 77 [2022-10-15 21:51:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:51:58,712 INFO L495 AbstractCegarLoop]: Abstraction has 7247 states and 9161 transitions. [2022-10-15 21:51:58,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 36 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:51:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 9161 transitions. [2022-10-15 21:51:58,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-15 21:51:58,721 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:51:58,721 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:51:58,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-15 21:51:58,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-10-15 21:51:58,936 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:51:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:51:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1270346214, now seen corresponding path program 7 times [2022-10-15 21:51:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:51:58,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774367915] [2022-10-15 21:51:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:51:58,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:51:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 5 proven. 318 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:59,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:51:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774367915] [2022-10-15 21:51:59,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774367915] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:51:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016521557] [2022-10-15 21:51:59,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-15 21:51:59,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:51:59,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:51:59,354 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:51:59,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-15 21:51:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:51:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 21:51:59,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:51:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 5 proven. 318 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:51:59,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:52:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 5 proven. 318 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:52:00,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016521557] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:52:00,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:52:00,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-10-15 21:52:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72604010] [2022-10-15 21:52:00,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:52:00,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 21:52:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:52:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 21:52:00,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1298, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 21:52:00,026 INFO L87 Difference]: Start difference. First operand 7247 states and 9161 transitions. Second operand has 42 states, 41 states have (on average 3.292682926829268) internal successors, (135), 42 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:52:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:52:01,936 INFO L93 Difference]: Finished difference Result 13348 states and 16781 transitions. [2022-10-15 21:52:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-15 21:52:01,937 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.292682926829268) internal successors, (135), 42 states have internal predecessors, (135), 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 78 [2022-10-15 21:52:01,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:52:01,961 INFO L225 Difference]: With dead ends: 13348 [2022-10-15 21:52:01,961 INFO L226 Difference]: Without dead ends: 13347 [2022-10-15 21:52:01,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1274, Invalid=4276, Unknown=0, NotChecked=0, Total=5550 [2022-10-15 21:52:01,970 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 261 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:52:01,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 481 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:52:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13347 states. [2022-10-15 21:52:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13347 to 7495. [2022-10-15 21:52:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 7486 states have (on average 1.2654288004274645) internal successors, (9473), 7491 states have internal predecessors, (9473), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:52:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 9478 transitions. [2022-10-15 21:52:02,800 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 9478 transitions. Word has length 78 [2022-10-15 21:52:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:52:02,801 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 9478 transitions. [2022-10-15 21:52:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.292682926829268) internal successors, (135), 42 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:52:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 9478 transitions. [2022-10-15 21:52:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-15 21:52:02,812 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:52:02,812 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 21:52:02,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-10-15 21:52:03,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-10-15 21:52:03,025 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:52:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:52:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1741715233, now seen corresponding path program 8 times [2022-10-15 21:52:03,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:52:03,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287939973] [2022-10-15 21:52:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:52:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:52:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:52:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 5 proven. 372 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:52:03,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:52:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287939973] [2022-10-15 21:52:03,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287939973] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:52:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417776832] [2022-10-15 21:52:03,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:52:03,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:52:03,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:52:03,527 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:52:03,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-15 21:52:03,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:52:03,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:52:03,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 21:52:03,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:52:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 7 proven. 366 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 21:52:03,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:52:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 7 proven. 366 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 21:52:04,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417776832] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:52:04,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:52:04,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 43 [2022-10-15 21:52:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975121341] [2022-10-15 21:52:04,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:52:04,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-15 21:52:04,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:52:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-15 21:52:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=1474, Unknown=0, NotChecked=0, Total=1892 [2022-10-15 21:52:04,267 INFO L87 Difference]: Start difference. First operand 7495 states and 9478 transitions. Second operand has 44 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 44 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:52:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:52:06,386 INFO L93 Difference]: Finished difference Result 17249 states and 21750 transitions. [2022-10-15 21:52:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-15 21:52:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 44 states have internal predecessors, (147), 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 85 [2022-10-15 21:52:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:52:06,419 INFO L225 Difference]: With dead ends: 17249 [2022-10-15 21:52:06,419 INFO L226 Difference]: Without dead ends: 17248 [2022-10-15 21:52:06,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1348, Invalid=4658, Unknown=0, NotChecked=0, Total=6006 [2022-10-15 21:52:06,428 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 332 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:52:06,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 344 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:52:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2022-10-15 21:52:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 11450. [2022-10-15 21:52:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11450 states, 11441 states have (on average 1.2734026745913818) internal successors, (14569), 11446 states have internal predecessors, (14569), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:52:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11450 states to 11450 states and 14574 transitions. [2022-10-15 21:52:07,970 INFO L78 Accepts]: Start accepts. Automaton has 11450 states and 14574 transitions. Word has length 85 [2022-10-15 21:52:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:52:07,970 INFO L495 AbstractCegarLoop]: Abstraction has 11450 states and 14574 transitions. [2022-10-15 21:52:07,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 44 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:52:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 11450 states and 14574 transitions. [2022-10-15 21:52:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-15 21:52:07,984 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:52:07,985 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 21:52:08,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-15 21:52:08,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:52:08,199 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:52:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:52:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1187523603, now seen corresponding path program 9 times [2022-10-15 21:52:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:52:08,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126289718] [2022-10-15 21:52:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:52:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:52:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:52:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 10 proven. 355 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:52:08,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:52:08,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126289718] [2022-10-15 21:52:08,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126289718] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:52:08,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981294442] [2022-10-15 21:52:08,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 21:52:08,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:52:08,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:52:08,642 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:52:08,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-15 21:52:08,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-15 21:52:08,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:52:08,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 21:52:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:52:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 10 proven. 355 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:52:08,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:52:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 10 proven. 355 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:52:09,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981294442] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:52:09,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:52:09,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2022-10-15 21:52:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994355518] [2022-10-15 21:52:09,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:52:09,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-15 21:52:09,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:52:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-15 21:52:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1205, Unknown=0, NotChecked=0, Total=1560 [2022-10-15 21:52:09,367 INFO L87 Difference]: Start difference. First operand 11450 states and 14574 transitions. Second operand has 40 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 40 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:52:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:52:13,292 INFO L93 Difference]: Finished difference Result 36573 states and 46259 transitions. [2022-10-15 21:52:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-15 21:52:13,292 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 40 states have internal predecessors, (127), 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 85 [2022-10-15 21:52:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:52:13,357 INFO L225 Difference]: With dead ends: 36573 [2022-10-15 21:52:13,357 INFO L226 Difference]: Without dead ends: 36572 [2022-10-15 21:52:13,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1185, Invalid=4365, Unknown=0, NotChecked=0, Total=5550 [2022-10-15 21:52:13,373 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 233 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:52:13,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 355 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:52:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36572 states. [2022-10-15 21:52:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36572 to 23221. [2022-10-15 21:52:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23221 states, 23212 states have (on average 1.2790367051525073) internal successors, (29689), 23217 states have internal predecessors, (29689), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:52:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23221 states to 23221 states and 29694 transitions. [2022-10-15 21:52:16,010 INFO L78 Accepts]: Start accepts. Automaton has 23221 states and 29694 transitions. Word has length 85 [2022-10-15 21:52:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:52:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 23221 states and 29694 transitions. [2022-10-15 21:52:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 40 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:52:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 23221 states and 29694 transitions. [2022-10-15 21:52:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-15 21:52:16,033 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:52:16,033 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 9, 9, 3, 3, 3, 1, 1, 1, 1, 1] [2022-10-15 21:52:16,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-10-15 21:52:16,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:52:16,246 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:52:16,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:52:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -988898166, now seen corresponding path program 8 times [2022-10-15 21:52:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:52:16,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221162164] [2022-10-15 21:52:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:52:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:52:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:52:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 10 proven. 407 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:52:16,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:52:16,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221162164] [2022-10-15 21:52:16,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221162164] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:52:16,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209015848] [2022-10-15 21:52:16,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:52:16,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:52:16,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:52:16,776 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:52:16,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-15 21:52:16,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:52:16,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:52:16,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-15 21:52:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:52:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 12 proven. 403 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:52:16,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:52:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 12 proven. 403 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:52:17,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209015848] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:52:17,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:52:17,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 41 [2022-10-15 21:52:17,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041614523] [2022-10-15 21:52:17,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:52:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 21:52:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:52:17,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 21:52:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1365, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 21:52:17,449 INFO L87 Difference]: Start difference. First operand 23221 states and 29694 transitions. Second operand has 42 states, 41 states have (on average 3.341463414634146) internal successors, (137), 42 states have internal predecessors, (137), 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)