/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 22:03:53,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 22:03:53,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 22:03:53,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 22:03:53,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 22:03:53,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 22:03:53,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 22:03:53,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 22:03:53,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 22:03:53,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 22:03:53,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 22:03:53,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 22:03:53,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 22:03:53,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 22:03:54,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 22:03:54,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 22:03:54,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 22:03:54,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 22:03:54,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 22:03:54,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 22:03:54,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 22:03:54,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 22:03:54,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 22:03:54,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 22:03:54,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 22:03:54,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 22:03:54,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 22:03:54,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 22:03:54,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 22:03:54,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 22:03:54,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 22:03:54,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 22:03:54,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 22:03:54,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 22:03:54,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 22:03:54,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 22:03:54,028 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 22:03:54,028 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 22:03:54,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 22:03:54,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 22:03:54,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 22:03:54,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 22:03:54,230 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 22:03:54,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c [2022-02-14 22:03:54,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1722714a0/b3f93db0ff914581aad48a8331ffcc4d/FLAGea653d7d6 [2022-02-14 22:03:54,635 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 22:03:54,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c [2022-02-14 22:03:54,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1722714a0/b3f93db0ff914581aad48a8331ffcc4d/FLAGea653d7d6 [2022-02-14 22:03:55,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1722714a0/b3f93db0ff914581aad48a8331ffcc4d [2022-02-14 22:03:55,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 22:03:55,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 22:03:55,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 22:03:55,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 22:03:55,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 22:03:55,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e40fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 22:03:55,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 22:03:55,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2022-02-14 22:03:55,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 22:03:55,194 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 22:03:55,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2022-02-14 22:03:55,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 22:03:55,213 INFO L208 MainTranslator]: Completed translation [2022-02-14 22:03:55,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55 WrapperNode [2022-02-14 22:03:55,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 22:03:55,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 22:03:55,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 22:03:55,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 22:03:55,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 22:03:55,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 22:03:55,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 22:03:55,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 22:03:55,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 22:03:55,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:55,267 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) [2022-02-14 22:03:55,269 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 [2022-02-14 22:03:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 22:03:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 22:03:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 22:03:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 22:03:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 22:03:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 22:03:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 22:03:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 22:03:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 22:03:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 22:03:55,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 22:03:55,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 22:03:55,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 22:03:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 22:03:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 22:03:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 22:03:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 22:03:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 22:03:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 22:03:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 22:03:55,351 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 22:03:55,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 22:03:55,441 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 22:03:55,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 22:03:55,445 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 22:03:55,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:03:55 BoogieIcfgContainer [2022-02-14 22:03:55,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 22:03:55,447 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 22:03:55,447 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 22:03:55,447 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 22:03:55,449 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 10:03:55 BasicIcfg [2022-02-14 22:03:55,462 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 22:03:55,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 22:03:55,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 22:03:55,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 22:03:55,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:03:55" (1/4) ... [2022-02-14 22:03:55,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f798b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (2/4) ... [2022-02-14 22:03:55,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f798b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:03:55" (3/4) ... [2022-02-14 22:03:55,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f798b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 10:03:55" (4/4) ... [2022-02-14 22:03:55,467 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound50.cJordan [2022-02-14 22:03:55,470 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 22:03:55,470 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 22:03:55,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 22:03:55,499 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 22:03:55,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 22:03:55,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 22:03:55,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-14 22:03:55,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:55,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:55,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:55,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2022-02-14 22:03:55,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:55,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112151542] [2022-02-14 22:03:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 22:03:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 22:03:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 22:03:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 22:03:55,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:55,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112151542] [2022-02-14 22:03:55,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112151542] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:03:55,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:03:55,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 22:03:55,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539499601] [2022-02-14 22:03:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:03:55,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 22:03:55,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:55,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 22:03:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 22:03:55,703 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 22:03:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:55,756 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-02-14 22:03:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 22:03:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-02-14 22:03:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:55,766 INFO L225 Difference]: With dead ends: 32 [2022-02-14 22:03:55,766 INFO L226 Difference]: Without dead ends: 27 [2022-02-14 22:03:55,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 22:03:55,774 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:55,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:03:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-14 22:03:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-14 22:03:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 22:03:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-02-14 22:03:55,810 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-02-14 22:03:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:55,811 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-02-14 22:03:55,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 22:03:55,812 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-02-14 22:03:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-14 22:03:55,813 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:55,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:55,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 22:03:55,814 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2022-02-14 22:03:55,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:55,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040598437] [2022-02-14 22:03:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:55,849 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:55,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400323591] [2022-02-14 22:03:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:55,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:55,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:55,860 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) [2022-02-14 22:03:55,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 22:03:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-14 22:03:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 22:03:56,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:03:56,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:56,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040598437] [2022-02-14 22:03:56,090 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:03:56,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400323591] [2022-02-14 22:03:56,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400323591] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:03:56,094 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:03:56,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 22:03:56,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130083187] [2022-02-14 22:03:56,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:03:56,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 22:03:56,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 22:03:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:03:56,097 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 22:03:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:56,160 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-02-14 22:03:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 22:03:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-02-14 22:03:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:56,162 INFO L225 Difference]: With dead ends: 37 [2022-02-14 22:03:56,162 INFO L226 Difference]: Without dead ends: 35 [2022-02-14 22:03:56,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-14 22:03:56,163 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:56,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:03:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-14 22:03:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-02-14 22:03:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 22:03:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-02-14 22:03:56,171 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-02-14 22:03:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:56,172 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-02-14 22:03:56,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 22:03:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-02-14 22:03:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-14 22:03:56,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:56,173 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-14 22:03:56,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-14 22:03:56,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:56,391 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:56,392 INFO L85 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2022-02-14 22:03:56,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:56,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496593437] [2022-02-14 22:03:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:56,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:56,403 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:56,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086205746] [2022-02-14 22:03:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:56,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:56,405 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) [2022-02-14 22:03:56,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 22:03:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:56,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-14 22:03:56,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 22:03:56,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:03:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-14 22:03:56,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:56,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496593437] [2022-02-14 22:03:56,738 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:03:56,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086205746] [2022-02-14 22:03:56,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086205746] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:03:56,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:03:56,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-02-14 22:03:56,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564133647] [2022-02-14 22:03:56,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:03:56,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 22:03:56,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 22:03:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-14 22:03:56,740 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-14 22:03:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:56,960 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-02-14 22:03:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 22:03:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-02-14 22:03:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:56,963 INFO L225 Difference]: With dead ends: 46 [2022-02-14 22:03:56,963 INFO L226 Difference]: Without dead ends: 42 [2022-02-14 22:03:56,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-02-14 22:03:56,964 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:56,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 138 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 22:03:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-14 22:03:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-02-14 22:03:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 22:03:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-02-14 22:03:56,968 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2022-02-14 22:03:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:56,968 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-02-14 22:03:56,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-14 22:03:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-02-14 22:03:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-14 22:03:56,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:56,969 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-02-14 22:03:56,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 22:03:57,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 22:03:57,186 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2022-02-14 22:03:57,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:57,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910632516] [2022-02-14 22:03:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:57,202 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:57,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358949811] [2022-02-14 22:03:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:57,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:57,203 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) [2022-02-14 22:03:57,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 22:03:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:57,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-14 22:03:57,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-14 22:03:57,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:03:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-14 22:03:57,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:57,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910632516] [2022-02-14 22:03:57,977 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:03:57,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358949811] [2022-02-14 22:03:57,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358949811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:03:57,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:03:57,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-02-14 22:03:57,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052109783] [2022-02-14 22:03:57,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:03:57,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-14 22:03:57,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:57,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-14 22:03:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-02-14 22:03:57,980 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:03:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:58,464 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-02-14 22:03:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-14 22:03:58,465 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-02-14 22:03:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:58,466 INFO L225 Difference]: With dead ends: 59 [2022-02-14 22:03:58,466 INFO L226 Difference]: Without dead ends: 53 [2022-02-14 22:03:58,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-02-14 22:03:58,467 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:58,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 248 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 188 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-02-14 22:03:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-14 22:03:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-02-14 22:03:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 22:03:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-02-14 22:03:58,472 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 39 [2022-02-14 22:03:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:58,472 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-02-14 22:03:58,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:03:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-02-14 22:03:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-14 22:03:58,473 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:58,473 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:58,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-14 22:03:58,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:58,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1381917339, now seen corresponding path program 1 times [2022-02-14 22:03:58,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:58,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34621278] [2022-02-14 22:03:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:58,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:58,693 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:58,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041899852] [2022-02-14 22:03:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:58,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:58,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:58,694 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) [2022-02-14 22:03:58,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-14 22:03:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:58,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-14 22:03:58,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:58,821 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:03:58,823 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-02-14 22:04:02,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-02-14 22:04:02,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:02,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34621278] [2022-02-14 22:04:02,576 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:02,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041899852] [2022-02-14 22:04:02,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041899852] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:02,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:02,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-02-14 22:04:02,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728289620] [2022-02-14 22:04:02,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:02,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 22:04:02,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 22:04:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-02-14 22:04:02,578 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:04:04,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:08,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:10,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:12,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:14,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:16,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:04:19,328 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-02-14 22:04:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 22:04:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2022-02-14 22:04:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:04:19,329 INFO L225 Difference]: With dead ends: 59 [2022-02-14 22:04:19,329 INFO L226 Difference]: Without dead ends: 55 [2022-02-14 22:04:19,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-02-14 22:04:19,330 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:04:19,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 186 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 12.1s Time] [2022-02-14 22:04:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-14 22:04:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-02-14 22:04:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 22:04:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-02-14 22:04:19,335 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 48 [2022-02-14 22:04:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:04:19,335 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-02-14 22:04:19,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:04:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-02-14 22:04:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-14 22:04:19,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:04:19,336 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:04:19,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-14 22:04:19,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:19,553 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:04:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:04:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -545218702, now seen corresponding path program 1 times [2022-02-14 22:04:19,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:04:19,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250857616] [2022-02-14 22:04:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:04:19,577 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:04:19,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839747298] [2022-02-14 22:04:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:19,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:19,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:19,578 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) [2022-02-14 22:04:19,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-14 22:04:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:04:19,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-14 22:04:19,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:04:19,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:04:19,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:19,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250857616] [2022-02-14 22:04:19,970 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:19,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839747298] [2022-02-14 22:04:19,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839747298] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:19,971 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:19,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-02-14 22:04:19,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055009504] [2022-02-14 22:04:19,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:19,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 22:04:19,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 22:04:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-14 22:04:19,972 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-02-14 22:04:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:04:20,112 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2022-02-14 22:04:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 22:04:20,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-02-14 22:04:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:04:20,113 INFO L225 Difference]: With dead ends: 72 [2022-02-14 22:04:20,113 INFO L226 Difference]: Without dead ends: 72 [2022-02-14 22:04:20,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-02-14 22:04:20,114 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:04:20,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 241 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:04:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-14 22:04:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-02-14 22:04:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-14 22:04:20,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-02-14 22:04:20,119 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 57 [2022-02-14 22:04:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:04:20,119 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-02-14 22:04:20,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-02-14 22:04:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-02-14 22:04:20,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-14 22:04:20,131 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:04:20,131 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:04:20,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-14 22:04:20,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:20,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:04:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:04:20,333 INFO L85 PathProgramCache]: Analyzing trace with hash 494880272, now seen corresponding path program 2 times [2022-02-14 22:04:20,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:04:20,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585833006] [2022-02-14 22:04:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:20,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:04:20,341 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:04:20,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580774547] [2022-02-14 22:04:20,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 22:04:20,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:20,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:20,353 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) [2022-02-14 22:04:20,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-14 22:04:20,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 22:04:20,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 22:04:20,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-14 22:04:20,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-14 22:04:20,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:04:20,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:20,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585833006] [2022-02-14 22:04:20,643 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:20,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580774547] [2022-02-14 22:04:20,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580774547] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:20,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:20,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-02-14 22:04:20,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412699710] [2022-02-14 22:04:20,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:20,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 22:04:20,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 22:04:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:04:20,645 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-02-14 22:04:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:04:20,697 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2022-02-14 22:04:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 22:04:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 57 [2022-02-14 22:04:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:04:20,699 INFO L225 Difference]: With dead ends: 77 [2022-02-14 22:04:20,699 INFO L226 Difference]: Without dead ends: 77 [2022-02-14 22:04:20,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-14 22:04:20,699 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:04:20,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 134 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:04:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-14 22:04:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-02-14 22:04:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-14 22:04:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-02-14 22:04:20,704 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 57 [2022-02-14 22:04:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:04:20,705 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-02-14 22:04:20,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-02-14 22:04:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-02-14 22:04:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-14 22:04:20,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:04:20,706 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:04:20,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-14 22:04:20,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:20,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:04:20,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:04:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1739644753, now seen corresponding path program 3 times [2022-02-14 22:04:20,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:04:20,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282712321] [2022-02-14 22:04:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:04:20,932 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:04:20,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855763303] [2022-02-14 22:04:20,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 22:04:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:20,935 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) [2022-02-14 22:04:20,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-14 22:04:21,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-14 22:04:21,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 22:04:21,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-14 22:04:21,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:22,535 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:22,539 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:22,540 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:34,308 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse3 (+ c_main_~X~0 1)) (.cse2 (+ (* (- 1) c_main_~Y~0) (div (+ c_main_~v~0 c_main_~X~0) 2) (* c_main_~X~0 c_main_~y~0))) (.cse0 (= c_main_~Y~0 0)) (.cse4 (= (mod (+ (* 2 c_main_~X~0 c_main_~y~0) c_main_~v~0 c_main_~X~0) 2) 0))) (or (let ((.cse1 (div .cse2 c_main_~Y~0))) (and (not .cse0) (not (<= .cse1 c_main_~X~0)) (= (mod .cse2 c_main_~Y~0) 0) (= c_main_~xy~0 (* c_main_~y~0 .cse1)) (<= .cse1 .cse3) (= c_main_~yx~0 (* c_main_~Y~0 .cse1)) .cse4)) (and (let ((.cse6 (= c_main_~y~0 0))) (or (let ((.cse5 (div c_main_~xy~0 c_main_~y~0))) (and (<= .cse5 .cse3) (= (mod c_main_~xy~0 c_main_~y~0) 0) (not .cse6) (< c_main_~X~0 .cse5))) (and .cse6 (= c_main_~xy~0 0)))) (= 0 .cse2) .cse0 (= c_main_~yx~0 0) .cse4))) (<= 0 c_main_~X~0) (<= c_main_~X~0 50) (< c_main_~v~0 (* 2 c_main_~Y~0)) (<= c_main_~Y~0 50) (<= 0 c_main_~Y~0)) is different from false [2022-02-14 22:04:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-02-14 22:04:44,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:45,157 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:47,093 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:05:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-02-14 22:05:10,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:05:10,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282712321] [2022-02-14 22:05:10,708 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:05:10,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855763303] [2022-02-14 22:05:10,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855763303] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:05:10,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:05:10,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-02-14 22:05:10,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968772844] [2022-02-14 22:05:10,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:05:10,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-14 22:05:10,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:05:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-14 22:05:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=456, Unknown=6, NotChecked=44, Total=600 [2022-02-14 22:05:10,710 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-02-14 22:05:59,802 WARN L228 SmtUtils]: Spent 14.61s on a formula simplification. DAG size of input: 72 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-14 22:06:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:06:00,040 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-02-14 22:06:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-14 22:06:00,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2022-02-14 22:06:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:06:00,040 INFO L225 Difference]: With dead ends: 78 [2022-02-14 22:06:00,040 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 22:06:00,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 70.9s TimeCoverageRelationStatistics Valid=200, Invalid=909, Unknown=17, NotChecked=64, Total=1190 [2022-02-14 22:06:00,041 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:06:00,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 163 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 169 Invalid, 0 Unknown, 67 Unchecked, 1.0s Time] [2022-02-14 22:06:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 22:06:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 22:06:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-14 22:06:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 22:06:00,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-02-14 22:06:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:06:00,042 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 22:06:00,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-02-14 22:06:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 22:06:00,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 22:06:00,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 22:06:00,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-14 22:06:00,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:06:00,248 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-02-14 22:06:00,248 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 22:06:00,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:06:00 BasicIcfg [2022-02-14 22:06:00,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 22:06:00,250 INFO L158 Benchmark]: Toolchain (without parser) took 125192.77ms. Allocated memory was 166.7MB in the beginning and 211.8MB in the end (delta: 45.1MB). Free memory was 111.3MB in the beginning and 157.9MB in the end (delta: -46.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 22:06:00,250 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 22:06:00,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.50ms. Allocated memory was 166.7MB in the beginning and 211.8MB in the end (delta: 45.1MB). Free memory was 111.1MB in the beginning and 185.5MB in the end (delta: -74.4MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-02-14 22:06:00,251 INFO L158 Benchmark]: Boogie Preprocessor took 16.95ms. Allocated memory is still 211.8MB. Free memory was 185.5MB in the beginning and 184.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 22:06:00,251 INFO L158 Benchmark]: RCFGBuilder took 206.76ms. Allocated memory is still 211.8MB. Free memory was 183.9MB in the beginning and 171.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-14 22:06:00,251 INFO L158 Benchmark]: IcfgTransformer took 15.42ms. Allocated memory is still 211.8MB. Free memory was 171.9MB in the beginning and 170.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-14 22:06:00,251 INFO L158 Benchmark]: TraceAbstraction took 124786.90ms. Allocated memory is still 211.8MB. Free memory was 169.8MB in the beginning and 157.9MB in the end (delta: 11.8MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2022-02-14 22:06:00,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.50ms. Allocated memory was 166.7MB in the beginning and 211.8MB in the end (delta: 45.1MB). Free memory was 111.1MB in the beginning and 185.5MB in the end (delta: -74.4MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.95ms. Allocated memory is still 211.8MB. Free memory was 185.5MB in the beginning and 184.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 206.76ms. Allocated memory is still 211.8MB. Free memory was 183.9MB in the beginning and 171.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 15.42ms. Allocated memory is still 211.8MB. Free memory was 171.9MB in the beginning and 170.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 124786.90ms. Allocated memory is still 211.8MB. Free memory was 169.8MB in the beginning and 157.9MB in the end (delta: 11.8MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 124.8s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 67.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 1245 SdHoareTripleChecker+Invalid, 13.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 136 IncrementalHoareTripleChecker+Unchecked, 1047 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 930 IncrementalHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 198 mSDtfsCounter, 930 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 515 SyntacticMatches, 8 SemanticMatches, 123 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 78.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 31 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 55.1s InterpolantComputationTime, 336 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 612 ConstructedInterpolants, 6 QuantifiedInterpolants, 3260 SizeOfPredicates, 49 NumberOfNonLiveVariables, 873 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 389/480 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-14 22:06:00,476 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-02-14 22:06:00,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...