/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-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/rangesum40.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:15:30,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:15:30,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:15:30,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 17:15:30,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:15:30,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:15:30,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:15:30,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:15:30,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:15:30,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:15:30,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:15:30,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:15:30,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:15:30,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:15:30,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:15:30,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:15:30,598 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:15:30,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:15:30,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:15:30,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:15:30,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:15:30,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:15:30,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:15:30,602 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:15:30,602 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:15:30,602 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:15:30,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:15:30,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:15:30,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:15:30,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:15:30,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:15:30,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:15:30,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:15:30,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:15:30,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:15:30,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:15:30,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:15:30,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:15:30,606 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:15:31,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:15:31,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:15:31,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:15:31,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:15:31,126 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:15:31,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum40.i [2022-10-15 17:15:31,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34fd3076/45d5b00c265246b684d2e4e89ac2b4d1/FLAGd925446e7 [2022-10-15 17:15:31,901 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:15:31,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum40.i [2022-10-15 17:15:31,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34fd3076/45d5b00c265246b684d2e4e89ac2b4d1/FLAGd925446e7 [2022-10-15 17:15:32,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34fd3076/45d5b00c265246b684d2e4e89ac2b4d1 [2022-10-15 17:15:32,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:15:32,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:15:32,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:15:32,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:15:32,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:15:32,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b92c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32, skipping insertion in model container [2022-10-15 17:15:32,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:15:32,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:15:32,465 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/rangesum40.i[1465,1478] [2022-10-15 17:15:32,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:15:32,495 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:15:32,560 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/rangesum40.i[1465,1478] [2022-10-15 17:15:32,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:15:32,585 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:15:32,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32 WrapperNode [2022-10-15 17:15:32,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:15:32,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:15:32,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:15:32,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:15:32,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,682 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-10-15 17:15:32,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:15:32,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:15:32,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:15:32,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:15:32,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:15:32,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:15:32,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:15:32,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:15:32,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (1/1) ... [2022-10-15 17:15:32,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:15:32,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:32,835 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 17:15:32,848 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 17:15:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:15:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:15:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:15:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:15:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:15:32,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:15:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:15:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-10-15 17:15:32,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-10-15 17:15:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:15:33,006 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:15:33,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:15:33,472 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:15:33,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:15:33,488 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 17:15:33,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:15:33 BoogieIcfgContainer [2022-10-15 17:15:33,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:15:33,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:15:33,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:15:33,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:15:33,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:15:32" (1/3) ... [2022-10-15 17:15:33,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778d74ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:15:33, skipping insertion in model container [2022-10-15 17:15:33,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:32" (2/3) ... [2022-10-15 17:15:33,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778d74ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:15:33, skipping insertion in model container [2022-10-15 17:15:33,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:15:33" (3/3) ... [2022-10-15 17:15:33,538 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2022-10-15 17:15:33,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:15:33,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-15 17:15:33,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:15:33,701 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6114fafe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:15:33,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-15 17:15:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 37 states have (on average 1.837837837837838) internal successors, (68), 59 states have internal predecessors, (68), 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 17:15:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:15:33,738 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:33,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:15:33,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 17:15:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:33,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997705782] [2022-10-15 17:15:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:33,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:34,159 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 17:15:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:34,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997705782] [2022-10-15 17:15:34,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997705782] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:34,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:34,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:15:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596281224] [2022-10-15 17:15:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:34,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:15:34,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:15:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:15:34,213 INFO L87 Difference]: Start difference. First operand has 64 states, 37 states have (on average 1.837837837837838) internal successors, (68), 59 states have internal predecessors, (68), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:34,309 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2022-10-15 17:15:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:15:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:15:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:34,322 INFO L225 Difference]: With dead ends: 63 [2022-10-15 17:15:34,322 INFO L226 Difference]: Without dead ends: 61 [2022-10-15 17:15:34,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:15:34,333 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 43 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:34,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-15 17:15:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-10-15 17:15:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 56 states have internal predecessors, (61), 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 17:15:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-10-15 17:15:34,388 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2022-10-15 17:15:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-10-15 17:15:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-10-15 17:15:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:15:34,390 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:34,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:15:34,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:15:34,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:34,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 17:15:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520149574] [2022-10-15 17:15:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:34,580 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 17:15:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520149574] [2022-10-15 17:15:34,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520149574] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:34,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:34,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:15:34,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888266667] [2022-10-15 17:15:34,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:15:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:15:34,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:15:34,587 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:34,659 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-10-15 17:15:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:15:34,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:15:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:34,662 INFO L225 Difference]: With dead ends: 65 [2022-10-15 17:15:34,662 INFO L226 Difference]: Without dead ends: 65 [2022-10-15 17:15:34,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:15:34,665 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:34,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 106 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-15 17:15:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-10-15 17:15:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 58 states have internal predecessors, (63), 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 17:15:34,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-10-15 17:15:34,680 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 4 [2022-10-15 17:15:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:34,680 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-10-15 17:15:34,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-10-15 17:15:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:15:34,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:34,682 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:15:34,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-10-15 17:15:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:34,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220860038] [2022-10-15 17:15:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:35,005 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 17:15:35,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:35,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220860038] [2022-10-15 17:15:35,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220860038] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751075065] [2022-10-15 17:15:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:35,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:35,010 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 17:15:35,021 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 17:15:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:35,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:15:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:35,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:35,457 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 17:15:35,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:35,610 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 17:15:35,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751075065] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:35,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:35,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-15 17:15:35,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854211520] [2022-10-15 17:15:35,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:35,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:15:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:35,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:15:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:15:35,621 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:35,988 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2022-10-15 17:15:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:15:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:15:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:35,991 INFO L225 Difference]: With dead ends: 73 [2022-10-15 17:15:35,991 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 17:15:35,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:15:35,994 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 55 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:35,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 239 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:15:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 17:15:36,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-10-15 17:15:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.489795918367347) internal successors, (73), 68 states have internal predecessors, (73), 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 17:15:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-10-15 17:15:36,006 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 8 [2022-10-15 17:15:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:36,007 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-10-15 17:15:36,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-10-15 17:15:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-15 17:15:36,008 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:36,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:36,048 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 17:15:36,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:36,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting rangesumErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1176108380, now seen corresponding path program 1 times [2022-10-15 17:15:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861170874] [2022-10-15 17:15:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 17:15:36,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861170874] [2022-10-15 17:15:36,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861170874] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:36,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:36,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:15:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224162116] [2022-10-15 17:15:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:15:36,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:15:36,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:15:36,376 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 17:15:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:36,395 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-10-15 17:15:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:15:36,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 25 [2022-10-15 17:15:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:36,400 INFO L225 Difference]: With dead ends: 76 [2022-10-15 17:15:36,401 INFO L226 Difference]: Without dead ends: 76 [2022-10-15 17:15:36,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:15:36,403 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:36,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-15 17:15:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-10-15 17:15:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 70 states have internal predecessors, (75), 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 17:15:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-10-15 17:15:36,418 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 25 [2022-10-15 17:15:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:36,419 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-10-15 17:15:36,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 17:15:36,419 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-10-15 17:15:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 17:15:36,420 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:36,421 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:15:36,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting rangesumErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash -892643841, now seen corresponding path program 1 times [2022-10-15 17:15:36,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:36,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442242218] [2022-10-15 17:15:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:36,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 17:15:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:36,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442242218] [2022-10-15 17:15:36,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442242218] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935195886] [2022-10-15 17:15:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:36,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:36,512 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 17:15:36,533 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 17:15:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:36,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:15:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:15:36,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:15:36,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935195886] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:36,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:36,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-10-15 17:15:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313120392] [2022-10-15 17:15:36,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:36,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:15:36,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:15:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:15:36,769 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:36,868 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-10-15 17:15:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:15:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-15 17:15:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:36,870 INFO L225 Difference]: With dead ends: 103 [2022-10-15 17:15:36,870 INFO L226 Difference]: Without dead ends: 103 [2022-10-15 17:15:36,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:15:36,872 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 47 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 407 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-15 17:15:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2022-10-15 17:15:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 97 states have internal predecessors, (102), 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 17:15:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2022-10-15 17:15:36,883 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 28 [2022-10-15 17:15:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2022-10-15 17:15:36,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2022-10-15 17:15:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 17:15:36,886 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:36,886 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:36,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 17:15:37,101 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 17:15:37,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting rangesumErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1208985942, now seen corresponding path program 2 times [2022-10-15 17:15:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:37,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188977534] [2022-10-15 17:15:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-10-15 17:15:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:37,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188977534] [2022-10-15 17:15:37,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188977534] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:37,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384068666] [2022-10-15 17:15:37,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:37,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:37,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:37,410 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 17:15:37,412 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 17:15:37,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 17:15:37,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:37,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:15:37,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:37,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-10-15 17:15:37,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:15:37,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384068666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:37,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:15:37,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-10-15 17:15:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134946512] [2022-10-15 17:15:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:37,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:37,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:15:37,603 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 17:15:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:37,707 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-10-15 17:15:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:15:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 55 [2022-10-15 17:15:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:37,709 INFO L225 Difference]: With dead ends: 93 [2022-10-15 17:15:37,709 INFO L226 Difference]: Without dead ends: 93 [2022-10-15 17:15:37,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:15:37,711 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:37,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 78 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-15 17:15:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-10-15 17:15:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 88 states have internal predecessors, (93), 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 17:15:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-10-15 17:15:37,721 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 55 [2022-10-15 17:15:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:37,722 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-10-15 17:15:37,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 17:15:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-10-15 17:15:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 17:15:37,724 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:37,724 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:37,767 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 17:15:37,939 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 17:15:37,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting rangesumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1208985941, now seen corresponding path program 1 times [2022-10-15 17:15:37,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:37,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7586718] [2022-10-15 17:15:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:37,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-10-15 17:15:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:38,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7586718] [2022-10-15 17:15:38,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7586718] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:38,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:38,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:15:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377271862] [2022-10-15 17:15:38,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:38,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:15:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:15:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:15:38,437 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 17:15:38,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:38,576 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2022-10-15 17:15:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:15:38,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 55 [2022-10-15 17:15:38,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:38,578 INFO L225 Difference]: With dead ends: 87 [2022-10-15 17:15:38,579 INFO L226 Difference]: Without dead ends: 87 [2022-10-15 17:15:38,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:15:38,580 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:38,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 98 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-15 17:15:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2022-10-15 17:15:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 81 states have internal predecessors, (86), 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 17:15:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2022-10-15 17:15:38,589 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 55 [2022-10-15 17:15:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:38,589 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2022-10-15 17:15:38,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 17:15:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2022-10-15 17:15:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-15 17:15:38,593 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:38,593 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:38,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 17:15:38,593 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:38,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1466755708, now seen corresponding path program 1 times [2022-10-15 17:15:38,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:38,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116188497] [2022-10-15 17:15:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:38,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:38,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:38,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144190520] [2022-10-15 17:15:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:38,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:38,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:38,625 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 17:15:38,636 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 17:15:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:38,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 17:15:38,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-10-15 17:15:38,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:15:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:38,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116188497] [2022-10-15 17:15:38,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:38,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144190520] [2022-10-15 17:15:38,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144190520] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:38,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:38,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:15:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297415166] [2022-10-15 17:15:38,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:38,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:15:38,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:38,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:15:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:15:38,797 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:15:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:38,806 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2022-10-15 17:15:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:15:38,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2022-10-15 17:15:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:38,810 INFO L225 Difference]: With dead ends: 94 [2022-10-15 17:15:38,810 INFO L226 Difference]: Without dead ends: 94 [2022-10-15 17:15:38,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 17:15:38,811 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:38,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 94 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-15 17:15:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2022-10-15 17:15:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 85 states have internal predecessors, (92), 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 17:15:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2022-10-15 17:15:38,821 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 80 [2022-10-15 17:15:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:38,822 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2022-10-15 17:15:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:15:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2022-10-15 17:15:38,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-15 17:15:38,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:38,825 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:38,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:39,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:39,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -123787236, now seen corresponding path program 1 times [2022-10-15 17:15:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:39,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546192471] [2022-10-15 17:15:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 17:15:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-15 17:15:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-10-15 17:15:39,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:39,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546192471] [2022-10-15 17:15:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546192471] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:39,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960032392] [2022-10-15 17:15:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:39,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:39,157 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 17:15:39,166 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 17:15:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:39,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 17:15:39,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-15 17:15:39,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-15 17:15:39,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960032392] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:39,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:39,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2022-10-15 17:15:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617284396] [2022-10-15 17:15:39,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-15 17:15:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-15 17:15:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2022-10-15 17:15:39,758 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:39,900 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2022-10-15 17:15:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-15 17:15:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-10-15 17:15:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:39,902 INFO L225 Difference]: With dead ends: 143 [2022-10-15 17:15:39,902 INFO L226 Difference]: Without dead ends: 143 [2022-10-15 17:15:39,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2022-10-15 17:15:39,903 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 106 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:39,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 221 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-10-15 17:15:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2022-10-15 17:15:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 128 states have (on average 1.0625) internal successors, (136), 131 states have internal predecessors, (136), 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 17:15:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 142 transitions. [2022-10-15 17:15:39,912 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 142 transitions. Word has length 80 [2022-10-15 17:15:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:39,912 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 142 transitions. [2022-10-15 17:15:39,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 142 transitions. [2022-10-15 17:15:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-15 17:15:39,915 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:39,916 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:39,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:40,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2049708680, now seen corresponding path program 1 times [2022-10-15 17:15:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:40,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646224759] [2022-10-15 17:15:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:40,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:40,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311304085] [2022-10-15 17:15:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:40,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:40,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:40,198 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 17:15:40,219 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 17:15:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:40,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-15 17:15:40,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-15 17:15:40,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-15 17:15:41,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646224759] [2022-10-15 17:15:41,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:41,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311304085] [2022-10-15 17:15:41,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311304085] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:41,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:15:41,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 42 [2022-10-15 17:15:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711534988] [2022-10-15 17:15:41,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 17:15:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 17:15:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:15:41,500 INFO L87 Difference]: Start difference. First operand 136 states and 142 transitions. Second operand has 42 states, 42 states have (on average 4.619047619047619) internal successors, (194), 42 states have internal predecessors, (194), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 17:15:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:41,714 INFO L93 Difference]: Finished difference Result 208 states and 214 transitions. [2022-10-15 17:15:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 17:15:41,716 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.619047619047619) internal successors, (194), 42 states have internal predecessors, (194), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 138 [2022-10-15 17:15:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:41,718 INFO L225 Difference]: With dead ends: 208 [2022-10-15 17:15:41,718 INFO L226 Difference]: Without dead ends: 208 [2022-10-15 17:15:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:15:41,720 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 120 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:41,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 350 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-10-15 17:15:41,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-10-15 17:15:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 200 states have (on average 1.04) internal successors, (208), 203 states have internal predecessors, (208), 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 17:15:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2022-10-15 17:15:41,731 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 138 [2022-10-15 17:15:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:41,732 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2022-10-15 17:15:41,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.619047619047619) internal successors, (194), 42 states have internal predecessors, (194), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 17:15:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2022-10-15 17:15:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-10-15 17:15:41,736 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:41,736 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:41,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:41,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1068599470, now seen corresponding path program 2 times [2022-10-15 17:15:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:41,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279291815] [2022-10-15 17:15:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:42,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757778090] [2022-10-15 17:15:42,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:42,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:42,037 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 17:15:42,049 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 17:15:42,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 17:15:42,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:42,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:15:42,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:42,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3224 trivial. 0 not checked. [2022-10-15 17:15:42,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:15:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:42,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279291815] [2022-10-15 17:15:42,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:42,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757778090] [2022-10-15 17:15:42,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757778090] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:42,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:42,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:15:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080834480] [2022-10-15 17:15:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:42,983 INFO L87 Difference]: Start difference. First operand 208 states and 214 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 17:15:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:43,027 INFO L93 Difference]: Finished difference Result 229 states and 237 transitions. [2022-10-15 17:15:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:15:43,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 210 [2022-10-15 17:15:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:43,031 INFO L225 Difference]: With dead ends: 229 [2022-10-15 17:15:43,031 INFO L226 Difference]: Without dead ends: 229 [2022-10-15 17:15:43,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:43,032 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:43,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-10-15 17:15:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-10-15 17:15:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2022-10-15 17:15:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 218 states have (on average 1.0504587155963303) internal successors, (229), 221 states have internal predecessors, (229), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2022-10-15 17:15:43,042 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 210 [2022-10-15 17:15:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:43,043 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2022-10-15 17:15:43,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 17:15:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2022-10-15 17:15:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-10-15 17:15:43,048 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:43,048 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:43,093 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 17:15:43,261 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 17:15:43,262 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash 580437231, now seen corresponding path program 1 times [2022-10-15 17:15:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28592028] [2022-10-15 17:15:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:43,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:43,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:43,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007723150] [2022-10-15 17:15:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:43,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:43,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:43,327 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 17:15:43,347 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 17:15:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:43,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:15:43,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 3186 trivial. 0 not checked. [2022-10-15 17:15:43,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2022-10-15 17:15:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:43,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28592028] [2022-10-15 17:15:43,609 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:43,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007723150] [2022-10-15 17:15:43,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007723150] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:43,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:15:43,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-10-15 17:15:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509905828] [2022-10-15 17:15:43,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:43,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:15:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:15:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:15:43,613 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 17:15:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:43,641 INFO L93 Difference]: Finished difference Result 251 states and 259 transitions. [2022-10-15 17:15:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:15:43,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 215 [2022-10-15 17:15:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:43,644 INFO L225 Difference]: With dead ends: 251 [2022-10-15 17:15:43,644 INFO L226 Difference]: Without dead ends: 251 [2022-10-15 17:15:43,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:15:43,645 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 9 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:43,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 176 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-10-15 17:15:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-10-15 17:15:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 242 states have (on average 1.0454545454545454) internal successors, (253), 245 states have internal predecessors, (253), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2022-10-15 17:15:43,653 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 215 [2022-10-15 17:15:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:43,654 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2022-10-15 17:15:43,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 17:15:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2022-10-15 17:15:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-10-15 17:15:43,657 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:43,658 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 14, 14, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:43,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:43,866 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 17:15:43,868 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash -264585361, now seen corresponding path program 2 times [2022-10-15 17:15:43,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:43,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512060262] [2022-10-15 17:15:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:43,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039389588] [2022-10-15 17:15:43,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:43,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:43,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:43,952 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 17:15:43,969 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 17:15:44,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:15:44,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:44,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:15:44,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 161 proven. 57 refuted. 0 times theorem prover too weak. 3252 trivial. 0 not checked. [2022-10-15 17:15:44,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 13 proven. 224 refuted. 0 times theorem prover too weak. 3233 trivial. 0 not checked. [2022-10-15 17:15:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:44,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512060262] [2022-10-15 17:15:44,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:44,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039389588] [2022-10-15 17:15:44,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039389588] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:44,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:15:44,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-10-15 17:15:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293891279] [2022-10-15 17:15:44,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:44,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:15:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:15:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:15:44,392 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 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 17:15:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:44,450 INFO L93 Difference]: Finished difference Result 299 states and 307 transitions. [2022-10-15 17:15:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:15:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 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 239 [2022-10-15 17:15:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:44,458 INFO L225 Difference]: With dead ends: 299 [2022-10-15 17:15:44,458 INFO L226 Difference]: Without dead ends: 299 [2022-10-15 17:15:44,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:15:44,461 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:44,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 219 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-10-15 17:15:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-10-15 17:15:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 290 states have (on average 1.0379310344827586) internal successors, (301), 293 states have internal predecessors, (301), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 307 transitions. [2022-10-15 17:15:44,472 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 307 transitions. Word has length 239 [2022-10-15 17:15:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:44,472 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 307 transitions. [2022-10-15 17:15:44,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 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 17:15:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 307 transitions. [2022-10-15 17:15:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-10-15 17:15:44,477 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:44,477 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 30, 30, 28, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:44,522 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 17:15:44,691 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 17:15:44,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1742654353, now seen corresponding path program 3 times [2022-10-15 17:15:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:44,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086787678] [2022-10-15 17:15:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:44,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:44,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734425672] [2022-10-15 17:15:44,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:15:44,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:44,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:44,763 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 17:15:44,765 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 17:15:44,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 17:15:44,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:44,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:15:44,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:44,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4534 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4532 trivial. 0 not checked. [2022-10-15 17:15:45,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:15:45,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:45,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086787678] [2022-10-15 17:15:45,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:45,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734425672] [2022-10-15 17:15:45,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734425672] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:45,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:45,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:15:45,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733150587] [2022-10-15 17:15:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:15:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:15:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:15:45,896 INFO L87 Difference]: Start difference. First operand 299 states and 307 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 17:15:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:45,936 INFO L93 Difference]: Finished difference Result 299 states and 307 transitions. [2022-10-15 17:15:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:15:45,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 287 [2022-10-15 17:15:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:45,939 INFO L225 Difference]: With dead ends: 299 [2022-10-15 17:15:45,939 INFO L226 Difference]: Without dead ends: 299 [2022-10-15 17:15:45,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 278 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:15:45,940 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 46 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:45,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 69 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-10-15 17:15:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-10-15 17:15:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2022-10-15 17:15:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 288 states have (on average 1.03125) internal successors, (297), 289 states have internal predecessors, (297), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 303 transitions. [2022-10-15 17:15:45,949 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 303 transitions. Word has length 287 [2022-10-15 17:15:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:45,949 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 303 transitions. [2022-10-15 17:15:45,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 17:15:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 303 transitions. [2022-10-15 17:15:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-10-15 17:15:45,955 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:45,955 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 42, 40, 40, 40, 40, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:45,992 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 17:15:46,169 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 17:15:46,169 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1202130648, now seen corresponding path program 1 times [2022-10-15 17:15:46,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:46,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131038942] [2022-10-15 17:15:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:46,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520604140] [2022-10-15 17:15:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:46,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:46,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:46,252 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 17:15:46,272 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 17:15:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:46,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:15:46,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6287 backedges. 1381 proven. 301 refuted. 0 times theorem prover too weak. 4605 trivial. 0 not checked. [2022-10-15 17:15:46,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6287 backedges. 29 proven. 1723 refuted. 0 times theorem prover too weak. 4535 trivial. 0 not checked. [2022-10-15 17:15:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131038942] [2022-10-15 17:15:47,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520604140] [2022-10-15 17:15:47,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520604140] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:47,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:15:47,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 23 [2022-10-15 17:15:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832856245] [2022-10-15 17:15:47,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:47,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 17:15:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:47,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 17:15:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:15:47,031 INFO L87 Difference]: Start difference. First operand 295 states and 303 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:47,115 INFO L93 Difference]: Finished difference Result 337 states and 345 transitions. [2022-10-15 17:15:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 17:15:47,116 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 343 [2022-10-15 17:15:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:47,119 INFO L225 Difference]: With dead ends: 337 [2022-10-15 17:15:47,119 INFO L226 Difference]: Without dead ends: 337 [2022-10-15 17:15:47,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 654 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:15:47,120 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 373 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-10-15 17:15:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-10-15 17:15:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 330 states have (on average 1.0272727272727273) internal successors, (339), 331 states have internal predecessors, (339), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 345 transitions. [2022-10-15 17:15:47,130 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 345 transitions. Word has length 343 [2022-10-15 17:15:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:47,130 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 345 transitions. [2022-10-15 17:15:47,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 345 transitions. [2022-10-15 17:15:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-10-15 17:15:47,139 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:47,139 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 63, 40, 40, 40, 40, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:47,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-10-15 17:15:47,352 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 17:15:47,353 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1107618027, now seen corresponding path program 2 times [2022-10-15 17:15:47,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:47,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379823621] [2022-10-15 17:15:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:47,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:47,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:47,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445307008] [2022-10-15 17:15:47,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:47,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:47,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:47,421 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 17:15:47,437 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 17:15:47,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:15:47,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-15 17:15:47,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9815 backedges. 3000 proven. 715 refuted. 0 times theorem prover too weak. 6100 trivial. 0 not checked. [2022-10-15 17:15:48,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9815 backedges. 0 proven. 3719 refuted. 0 times theorem prover too weak. 6096 trivial. 0 not checked. [2022-10-15 17:15:48,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:48,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379823621] [2022-10-15 17:15:48,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:48,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445307008] [2022-10-15 17:15:48,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445307008] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:48,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:15:48,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 42 [2022-10-15 17:15:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536450973] [2022-10-15 17:15:48,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:48,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 17:15:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 17:15:48,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:15:48,826 INFO L87 Difference]: Start difference. First operand 337 states and 345 transitions. Second operand has 42 states, 42 states have (on average 4.142857142857143) internal successors, (174), 42 states have internal predecessors, (174), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:49,050 INFO L93 Difference]: Finished difference Result 517 states and 561 transitions. [2022-10-15 17:15:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 17:15:49,054 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.142857142857143) internal successors, (174), 42 states have internal predecessors, (174), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 406 [2022-10-15 17:15:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:49,059 INFO L225 Difference]: With dead ends: 517 [2022-10-15 17:15:49,059 INFO L226 Difference]: Without dead ends: 517 [2022-10-15 17:15:49,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 764 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:15:49,061 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 217 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:49,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 302 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-10-15 17:15:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2022-10-15 17:15:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 510 states have (on average 1.088235294117647) internal successors, (555), 511 states have internal predecessors, (555), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 561 transitions. [2022-10-15 17:15:49,076 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 561 transitions. Word has length 406 [2022-10-15 17:15:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:49,077 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 561 transitions. [2022-10-15 17:15:49,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.142857142857143) internal successors, (174), 42 states have internal predecessors, (174), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:49,077 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 561 transitions. [2022-10-15 17:15:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-10-15 17:15:49,096 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:49,096 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 57, 57, 40, 40, 40, 40, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:49,139 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 17:15:49,310 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 17:15:49,311 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:49,312 INFO L85 PathProgramCache]: Analyzing trace with hash -445449963, now seen corresponding path program 3 times [2022-10-15 17:15:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012912801] [2022-10-15 17:15:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:49,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:49,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930693694] [2022-10-15 17:15:49,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:15:49,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:49,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:49,408 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 17:15:49,436 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 17:15:49,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-15 17:15:49,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:49,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 17:15:49,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28148 backedges. 11214 proven. 1 refuted. 0 times theorem prover too weak. 16933 trivial. 0 not checked. [2022-10-15 17:15:49,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 28148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28147 trivial. 0 not checked. [2022-10-15 17:15:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012912801] [2022-10-15 17:15:49,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:15:49,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930693694] [2022-10-15 17:15:49,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930693694] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:49,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:15:49,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-10-15 17:15:49,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840682580] [2022-10-15 17:15:49,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:15:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:15:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:15:49,790 INFO L87 Difference]: Start difference. First operand 517 states and 561 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:49,817 INFO L93 Difference]: Finished difference Result 532 states and 576 transitions. [2022-10-15 17:15:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:15:49,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 676 [2022-10-15 17:15:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:49,821 INFO L225 Difference]: With dead ends: 532 [2022-10-15 17:15:49,821 INFO L226 Difference]: Without dead ends: 532 [2022-10-15 17:15:49,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1350 GetRequests, 1346 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:15:49,823 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:49,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 87 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-10-15 17:15:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-10-15 17:15:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 525 states have (on average 1.0857142857142856) internal successors, (570), 526 states have internal predecessors, (570), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 576 transitions. [2022-10-15 17:15:49,840 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 576 transitions. Word has length 676 [2022-10-15 17:15:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:49,841 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 576 transitions. [2022-10-15 17:15:49,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:15:49,842 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 576 transitions. [2022-10-15 17:15:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2022-10-15 17:15:49,859 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:49,860 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 57, 57, 40, 40, 40, 40, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:49,906 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 17:15:50,074 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 17:15:50,074 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:15:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 744296230, now seen corresponding path program 4 times [2022-10-15 17:15:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:50,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854765755] [2022-10-15 17:15:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:50,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:50,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:15:50,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748218605] [2022-10-15 17:15:50,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:15:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:50,173 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 17:15:50,175 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 17:16:32,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:16:32,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:32,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:16:32,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 28181 backedges. 11214 proven. 34 refuted. 0 times theorem prover too weak. 16933 trivial. 0 not checked. [2022-10-15 17:16:32,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 28181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 28147 trivial. 0 not checked. [2022-10-15 17:16:32,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854765755] [2022-10-15 17:16:32,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:16:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748218605] [2022-10-15 17:16:32,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748218605] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:32,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:16:32,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-10-15 17:16:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401614763] [2022-10-15 17:16:32,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:32,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 17:16:32,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:32,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 17:16:32,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:16:32,752 INFO L87 Difference]: Start difference. First operand 532 states and 576 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:32,831 INFO L93 Difference]: Finished difference Result 562 states and 606 transitions. [2022-10-15 17:16:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:16:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 691 [2022-10-15 17:16:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:32,836 INFO L225 Difference]: With dead ends: 562 [2022-10-15 17:16:32,836 INFO L226 Difference]: Without dead ends: 562 [2022-10-15 17:16:32,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 1370 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:16:32,837 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 60 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:32,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 133 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-10-15 17:16:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-10-15 17:16:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 555 states have (on average 1.0810810810810811) internal successors, (600), 556 states have internal predecessors, (600), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 606 transitions. [2022-10-15 17:16:32,852 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 606 transitions. Word has length 691 [2022-10-15 17:16:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:32,853 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 606 transitions. [2022-10-15 17:16:32,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 606 transitions. [2022-10-15 17:16:32,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2022-10-15 17:16:32,861 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:32,861 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 57, 57, 40, 40, 40, 40, 10, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:32,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:33,062 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 17:16:33,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 17:16:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1375152314, now seen corresponding path program 5 times [2022-10-15 17:16:33,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:33,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461671598] [2022-10-15 17:16:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:33,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:16:33,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107704587] [2022-10-15 17:16:33,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:16:33,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:33,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:33,160 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 17:16:33,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process