/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/array-patterns/array12_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:05:42,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:05:42,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:05:42,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:05:42,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:05:42,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:05:42,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:05:42,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:05:42,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:05:42,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:05:42,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:05:42,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:05:42,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:05:42,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:05:42,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:05:42,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:05:42,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:05:42,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:05:42,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:05:42,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:05:42,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:05:42,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:05:42,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:05:42,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:05:42,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:05:42,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:05:42,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:05:42,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:05:42,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:05:42,786 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:05:42,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:05:42,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:05:42,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:05:42,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:05:42,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:05:42,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:05:42,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:05:42,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:05:42,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:05:42,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:05:42,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:05:42,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:05:42,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:05:42,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:05:42,789 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:05:42,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:05:42,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:05:42,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:05:42,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:05:42,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:05:42,970 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:05:42,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array12_pattern.c [2022-01-31 10:05:43,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a574df217/bdb8d460c9154d56bbe10bf985c1cedf/FLAG983f1c25e [2022-01-31 10:05:43,505 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:05:43,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c [2022-01-31 10:05:43,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a574df217/bdb8d460c9154d56bbe10bf985c1cedf/FLAG983f1c25e [2022-01-31 10:05:44,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a574df217/bdb8d460c9154d56bbe10bf985c1cedf [2022-01-31 10:05:44,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:05:44,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:05:44,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:05:44,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:05:44,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:05:44,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3957f919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44, skipping insertion in model container [2022-01-31 10:05:44,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:05:44,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:05:44,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c[1349,1362] [2022-01-31 10:05:44,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:05:44,182 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:05:44,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c[1349,1362] [2022-01-31 10:05:44,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:05:44,209 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:05:44,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44 WrapperNode [2022-01-31 10:05:44,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:05:44,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:05:44,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:05:44,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:05:44,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:05:44,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:05:44,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:05:44,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:05:44,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:05:44,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:44,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 10:05:44,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 10:05:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:05:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:05:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:05:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:05:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:05:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:05:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:05:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:05:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:05:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:05:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:05:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:05:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:05:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:05:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:05:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:05:44,372 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:05:44,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:05:44,552 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:05:44,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:05:44,563 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 10:05:44,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:05:44 BoogieIcfgContainer [2022-01-31 10:05:44,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:05:44,565 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:05:44,565 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:05:44,565 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:05:44,572 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:05:44" (1/1) ... [2022-01-31 10:05:44,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:05:44 BasicIcfg [2022-01-31 10:05:44,593 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:05:44,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:05:44,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:05:44,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:05:44,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:05:44" (1/4) ... [2022-01-31 10:05:44,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756734a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:05:44, skipping insertion in model container [2022-01-31 10:05:44,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:05:44" (2/4) ... [2022-01-31 10:05:44,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756734a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:05:44, skipping insertion in model container [2022-01-31 10:05:44,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:05:44" (3/4) ... [2022-01-31 10:05:44,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756734a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:05:44, skipping insertion in model container [2022-01-31 10:05:44,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:05:44" (4/4) ... [2022-01-31 10:05:44,599 INFO L111 eAbstractionObserver]: Analyzing ICFG array12_pattern.cJordan [2022-01-31 10:05:44,603 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:05:44,603 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:05:44,637 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:05:44,644 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 [2022-01-31 10:05:44,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:05:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 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) [2022-01-31 10:05:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 10:05:44,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:44,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:44,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 841962851, now seen corresponding path program 1 times [2022-01-31 10:05:44,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:44,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120269499] [2022-01-31 10:05:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:05:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:05:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:05:44,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:05:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120269499] [2022-01-31 10:05:44,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120269499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:05:44,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:05:44,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:05:44,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954928344] [2022-01-31 10:05:44,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:05:44,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:05:44,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:05:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:05:44,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:05:44,842 INFO L87 Difference]: Start difference. First operand has 38 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:05:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:05:44,908 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-01-31 10:05:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:05:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-01-31 10:05:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:05:44,917 INFO L225 Difference]: With dead ends: 38 [2022-01-31 10:05:44,917 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 10:05:44,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:05:44,921 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:05:44,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:05:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 10:05:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 10:05:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:05:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-01-31 10:05:44,949 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 20 [2022-01-31 10:05:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:05:44,949 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-01-31 10:05:44,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:05:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-01-31 10:05:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 10:05:44,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:44,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:05:44,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1555986832, now seen corresponding path program 1 times [2022-01-31 10:05:44,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:44,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075835131] [2022-01-31 10:05:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:44,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:05:44,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915703966] [2022-01-31 10:05:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:44,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:45,005 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) [2022-01-31 10:05:45,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 10:05:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:45,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:05:45,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:05:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:05:45,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:05:45,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:05:45,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075835131] [2022-01-31 10:05:45,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:05:45,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915703966] [2022-01-31 10:05:45,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915703966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:05:45,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:05:45,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:05:45,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164464405] [2022-01-31 10:05:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:05:45,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:05:45,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:05:45,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:05:45,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:05:45,199 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:05:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:05:45,284 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-01-31 10:05:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 10:05:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 10:05:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:05:45,285 INFO L225 Difference]: With dead ends: 43 [2022-01-31 10:05:45,285 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 10:05:45,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:05:45,286 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:05:45,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 79 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:05:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 10:05:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2022-01-31 10:05:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:05:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-01-31 10:05:45,292 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 32 [2022-01-31 10:05:45,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:05:45,292 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-01-31 10:05:45,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:05:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-01-31 10:05:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 10:05:45,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:45,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:45,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 10:05:45,510 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 [2022-01-31 10:05:45,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:45,511 INFO L85 PathProgramCache]: Analyzing trace with hash 384739205, now seen corresponding path program 1 times [2022-01-31 10:05:45,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:45,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441933358] [2022-01-31 10:05:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:45,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:45,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:05:45,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081474343] [2022-01-31 10:05:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:45,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:45,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:45,526 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) [2022-01-31 10:05:45,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 10:05:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:45,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:05:45,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:05:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:05:45,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:05:45,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:05:45,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441933358] [2022-01-31 10:05:45,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:05:45,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081474343] [2022-01-31 10:05:45,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081474343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:05:45,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:05:45,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:05:45,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748485515] [2022-01-31 10:05:45,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:05:45,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:05:45,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:05:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:05:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:05:45,669 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:05:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:05:45,705 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-01-31 10:05:45,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:05:45,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-01-31 10:05:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:05:45,706 INFO L225 Difference]: With dead ends: 41 [2022-01-31 10:05:45,706 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 10:05:45,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:05:45,707 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:05:45,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 65 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:05:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 10:05:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-01-31 10:05:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:05:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-01-31 10:05:45,711 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 38 [2022-01-31 10:05:45,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:05:45,711 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-01-31 10:05:45,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:05:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-01-31 10:05:45,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 10:05:45,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:05:45,712 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:05:45,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-31 10:05:45,939 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 [2022-01-31 10:05:45,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:05:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:05:45,941 INFO L85 PathProgramCache]: Analyzing trace with hash -991127462, now seen corresponding path program 1 times [2022-01-31 10:05:45,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:05:45,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92407873] [2022-01-31 10:05:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:45,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:05:45,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:05:45,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769839380] [2022-01-31 10:05:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:05:45,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:45,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:05:45,983 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) [2022-01-31 10:05:45,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 10:05:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:05:46,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-31 10:05:46,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:05:46,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2022-01-31 10:05:46,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:05:46,234 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:05:46,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 91 [2022-01-31 10:05:46,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:46,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:46,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:46,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:46,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:05:46,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 60 [2022-01-31 10:05:46,850 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:05:46,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 3 [2022-01-31 10:05:47,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:05:47,224 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:05:47,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 27 [2022-01-31 10:05:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:05:47,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:13,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92407873] [2022-01-31 10:06:13,490 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769839380] [2022-01-31 10:06:13,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769839380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:06:13,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:06:13,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-01-31 10:06:13,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645285794] [2022-01-31 10:06:13,490 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:13,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 10:06:13,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:13,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 10:06:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-01-31 10:06:13,492 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 15 states have internal predecessors, (29), 5 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) [2022-01-31 10:06:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:14,028 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2022-01-31 10:06:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 10:06:14,034 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 15 states have internal predecessors, (29), 5 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) Word has length 42 [2022-01-31 10:06:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:14,039 INFO L225 Difference]: With dead ends: 72 [2022-01-31 10:06:14,039 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 10:06:14,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2022-01-31 10:06:14,040 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:14,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 231 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 118 Unchecked, 0.2s Time] [2022-01-31 10:06:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 10:06:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2022-01-31 10:06:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 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) [2022-01-31 10:06:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-01-31 10:06:14,049 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 42 [2022-01-31 10:06:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:14,049 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-01-31 10:06:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 15 states have internal predecessors, (29), 5 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) [2022-01-31 10:06:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-01-31 10:06:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 10:06:14,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:14,051 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:14,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 10:06:14,251 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 [2022-01-31 10:06:14,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2101761932, now seen corresponding path program 2 times [2022-01-31 10:06:14,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:14,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650394883] [2022-01-31 10:06:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:14,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:14,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797582719] [2022-01-31 10:06:14,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:06:14,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:14,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:14,284 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) [2022-01-31 10:06:14,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 10:06:14,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:06:14,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:06:14,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:06:14,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:06:14,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 10:06:14,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:14,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650394883] [2022-01-31 10:06:14,517 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:14,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797582719] [2022-01-31 10:06:14,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797582719] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:06:14,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:06:14,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:06:14,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346562695] [2022-01-31 10:06:14,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:06:14,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:06:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:06:14,519 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:14,664 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2022-01-31 10:06:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 10:06:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2022-01-31 10:06:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:14,665 INFO L225 Difference]: With dead ends: 115 [2022-01-31 10:06:14,665 INFO L226 Difference]: Without dead ends: 115 [2022-01-31 10:06:14,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:06:14,666 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 79 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:14,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 142 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:06:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-31 10:06:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-01-31 10:06:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 10:06:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-01-31 10:06:14,677 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 44 [2022-01-31 10:06:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:14,677 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-01-31 10:06:14,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-01-31 10:06:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 10:06:14,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:14,679 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:14,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 10:06:14,896 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 [2022-01-31 10:06:14,896 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:14,897 INFO L85 PathProgramCache]: Analyzing trace with hash -278747883, now seen corresponding path program 3 times [2022-01-31 10:06:14,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:14,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635478551] [2022-01-31 10:06:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:14,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:14,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:14,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699182446] [2022-01-31 10:06:14,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:06:14,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:14,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:14,914 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) [2022-01-31 10:06:14,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 10:06:14,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 10:06:14,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:06:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-31 10:06:14,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:15,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 86 [2022-01-31 10:06:15,271 INFO L353 Elim1Store]: treesize reduction 100, result has 45.4 percent of original size [2022-01-31 10:06:15,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 141 [2022-01-31 10:06:15,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 3 [2022-01-31 10:06:15,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:15,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 20 [2022-01-31 10:06:15,615 INFO L353 Elim1Store]: treesize reduction 52, result has 37.3 percent of original size [2022-01-31 10:06:15,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 54 [2022-01-31 10:06:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:06:15,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:16,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 86 [2022-01-31 10:06:16,271 INFO L353 Elim1Store]: treesize reduction 146, result has 36.8 percent of original size [2022-01-31 10:06:16,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 107 [2022-01-31 10:06:16,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 6 [2022-01-31 10:06:16,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:06:16,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2022-01-31 10:06:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 10:06:17,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:17,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635478551] [2022-01-31 10:06:17,025 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:17,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699182446] [2022-01-31 10:06:17,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699182446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:06:17,025 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:06:17,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 30 [2022-01-31 10:06:17,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784515926] [2022-01-31 10:06:17,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:17,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 10:06:17,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 10:06:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2022-01-31 10:06:17,027 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 30 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 24 states have internal predecessors, (56), 8 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 10:06:19,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 10:06:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:20,098 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2022-01-31 10:06:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 10:06:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 24 states have internal predecessors, (56), 8 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 44 [2022-01-31 10:06:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:20,104 INFO L225 Difference]: With dead ends: 115 [2022-01-31 10:06:20,104 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 10:06:20,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=1670, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 10:06:20,106 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:20,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 223 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 283 Invalid, 1 Unknown, 131 Unchecked, 2.6s Time] [2022-01-31 10:06:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 10:06:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 84. [2022-01-31 10:06:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.164179104477612) internal successors, (78), 69 states have internal predecessors, (78), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 10:06:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2022-01-31 10:06:20,111 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 44 [2022-01-31 10:06:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:20,112 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2022-01-31 10:06:20,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 24 states have internal predecessors, (56), 8 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-01-31 10:06:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2022-01-31 10:06:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 10:06:20,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:20,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:20,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 10:06:20,333 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 [2022-01-31 10:06:20,334 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash -404786577, now seen corresponding path program 4 times [2022-01-31 10:06:20,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:20,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286118006] [2022-01-31 10:06:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:20,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:20,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:20,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958532023] [2022-01-31 10:06:20,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:06:20,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:20,359 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) [2022-01-31 10:06:20,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 10:06:20,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:06:20,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:06:20,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:06:20,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:06:20,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 10:06:20,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286118006] [2022-01-31 10:06:20,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958532023] [2022-01-31 10:06:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958532023] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:06:20,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:06:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:06:20,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080024353] [2022-01-31 10:06:20,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:20,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:06:20,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:06:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:06:20,641 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:21,099 INFO L93 Difference]: Finished difference Result 170 states and 196 transitions. [2022-01-31 10:06:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:06:21,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-01-31 10:06:21,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:21,100 INFO L225 Difference]: With dead ends: 170 [2022-01-31 10:06:21,101 INFO L226 Difference]: Without dead ends: 170 [2022-01-31 10:06:21,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-01-31 10:06:21,102 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 51 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:21,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 145 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 10:06:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-31 10:06:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 91. [2022-01-31 10:06:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 76 states have internal predecessors, (88), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 10:06:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2022-01-31 10:06:21,113 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 46 [2022-01-31 10:06:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:21,113 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2022-01-31 10:06:21,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2022-01-31 10:06:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:06:21,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:21,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:21,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 10:06:21,331 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 [2022-01-31 10:06:21,331 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:21,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash 217575831, now seen corresponding path program 5 times [2022-01-31 10:06:21,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:21,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268031843] [2022-01-31 10:06:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:21,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:21,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371615210] [2022-01-31 10:06:21,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:06:21,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:21,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:21,342 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) [2022-01-31 10:06:21,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 10:06:21,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-31 10:06:21,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:06:21,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:06:21,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:06:21,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:06:21,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:21,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268031843] [2022-01-31 10:06:21,601 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:21,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371615210] [2022-01-31 10:06:21,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371615210] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:06:21,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:06:21,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:06:21,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024148809] [2022-01-31 10:06:21,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:21,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:06:21,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:06:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:06:21,604 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:06:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:21,804 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-01-31 10:06:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 10:06:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-01-31 10:06:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:21,805 INFO L225 Difference]: With dead ends: 101 [2022-01-31 10:06:21,805 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 10:06:21,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:06:21,806 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:21,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 120 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:06:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 10:06:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2022-01-31 10:06:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 50 states have internal predecessors, (56), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:06:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-01-31 10:06:21,809 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 47 [2022-01-31 10:06:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:21,809 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-01-31 10:06:21,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:06:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-01-31 10:06:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 10:06:21,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:21,810 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:21,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 10:06:22,010 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 [2022-01-31 10:06:22,011 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1040433893, now seen corresponding path program 6 times [2022-01-31 10:06:22,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202997450] [2022-01-31 10:06:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:22,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:22,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:22,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442380821] [2022-01-31 10:06:22,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:06:22,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:22,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:22,038 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:06:22,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 10:06:22,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-31 10:06:22,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:06:22,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:06:22,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 10:06:22,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 10:06:22,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:22,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202997450] [2022-01-31 10:06:22,331 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:22,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442380821] [2022-01-31 10:06:22,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442380821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:06:22,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:06:22,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:06:22,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728689992] [2022-01-31 10:06:22,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:22,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:06:22,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:22,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:06:22,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:06:22,334 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:22,634 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2022-01-31 10:06:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 10:06:22,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-01-31 10:06:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:22,635 INFO L225 Difference]: With dead ends: 72 [2022-01-31 10:06:22,635 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 10:06:22,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:06:22,636 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 62 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:22,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 104 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 10:06:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 10:06:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2022-01-31 10:06:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.150943396226415) internal successors, (61), 54 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:06:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-01-31 10:06:22,639 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 53 [2022-01-31 10:06:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:22,639 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-01-31 10:06:22,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-01-31 10:06:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 10:06:22,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:22,640 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:22,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-31 10:06:22,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 10:06:22,841 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash 90578294, now seen corresponding path program 7 times [2022-01-31 10:06:22,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:22,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669318057] [2022-01-31 10:06:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:22,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:22,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:22,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245465138] [2022-01-31 10:06:22,850 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 10:06:22,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:22,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:22,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:06:22,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 10:06:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:06:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:06:22,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-31 10:06:23,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:06:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 10:06:23,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:06:23,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669318057] [2022-01-31 10:06:23,121 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:06:23,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245465138] [2022-01-31 10:06:23,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245465138] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:06:23,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:06:23,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:06:23,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287949883] [2022-01-31 10:06:23,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:06:23,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:06:23,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:06:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:06:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:06:23,122 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:06:23,545 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-01-31 10:06:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 10:06:23,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-01-31 10:06:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:06:23,546 INFO L225 Difference]: With dead ends: 66 [2022-01-31 10:06:23,547 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 10:06:23,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:06:23,547 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:06:23,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 141 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 10:06:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 10:06:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2022-01-31 10:06:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 52 states have internal predecessors, (58), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:06:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2022-01-31 10:06:23,553 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 58 [2022-01-31 10:06:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:06:23,553 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2022-01-31 10:06:23,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:06:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2022-01-31 10:06:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 10:06:23,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:06:23,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:06:23,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 10:06:23,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 10:06:23,776 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:06:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:06:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1964616048, now seen corresponding path program 8 times [2022-01-31 10:06:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:06:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620095759] [2022-01-31 10:06:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:06:23,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:06:23,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:06:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794768736] [2022-01-31 10:06:23,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:06:23,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:06:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:06:23,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:06:23,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 10:06:25,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:06:25,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:06:25,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 81 conjunts are in the unsatisfiable core [2022-01-31 10:06:25,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:06:25,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-01-31 10:06:25,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:06:25,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-01-31 10:06:25,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 69 [2022-01-31 10:06:25,706 INFO L353 Elim1Store]: treesize reduction 124, result has 17.9 percent of original size [2022-01-31 10:06:25,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 88 [2022-01-31 10:06:25,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:25,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2022-01-31 10:06:26,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 68 [2022-01-31 10:06:26,067 INFO L353 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2022-01-31 10:06:26,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 89 [2022-01-31 10:06:26,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 19 [2022-01-31 10:06:26,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2022-01-31 10:06:26,273 INFO L353 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2022-01-31 10:06:26,274 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 104 [2022-01-31 10:06:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:26,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 20 [2022-01-31 10:06:43,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 121 [2022-01-31 10:06:45,450 INFO L353 Elim1Store]: treesize reduction 958, result has 24.9 percent of original size [2022-01-31 10:06:45,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 120 treesize of output 388 [2022-01-31 10:06:45,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:06:45,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 100 [2022-01-31 10:06:45,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:06:45,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:45,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 91 [2022-01-31 10:06:46,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:06:46,374 INFO L353 Elim1Store]: treesize reduction 78, result has 36.6 percent of original size [2022-01-31 10:06:46,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 208 treesize of output 182 [2022-01-31 10:07:17,501 INFO L353 Elim1Store]: treesize reduction 203, result has 29.0 percent of original size [2022-01-31 10:07:17,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 301 treesize of output 168 [2022-01-31 10:07:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:07:18,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:08:02,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:08:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620095759] [2022-01-31 10:08:02,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:08:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794768736] [2022-01-31 10:08:02,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794768736] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:08:02,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:08:02,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-01-31 10:08:02,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364103650] [2022-01-31 10:08:02,915 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:08:02,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 10:08:02,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:08:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 10:08:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2079, Unknown=16, NotChecked=0, Total=2352 [2022-01-31 10:08:02,917 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 31 states have internal predecessors, (47), 5 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) [2022-01-31 10:08:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:08:08,416 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2022-01-31 10:08:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 10:08:08,416 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 31 states have internal predecessors, (47), 5 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) Word has length 60 [2022-01-31 10:08:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:08:08,417 INFO L225 Difference]: With dead ends: 127 [2022-01-31 10:08:08,417 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 10:08:08,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 76.1s TimeCoverageRelationStatistics Valid=328, Invalid=2846, Unknown=18, NotChecked=0, Total=3192 [2022-01-31 10:08:08,418 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 10:08:08,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 404 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 465 Invalid, 0 Unknown, 519 Unchecked, 0.8s Time] [2022-01-31 10:08:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 10:08:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2022-01-31 10:08:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 94 states have internal predecessors, (106), 12 states have call successors, (12), 9 states have call predecessors, (12), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 10:08:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2022-01-31 10:08:08,424 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 60 [2022-01-31 10:08:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:08:08,424 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2022-01-31 10:08:08,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 31 states have internal predecessors, (47), 5 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) [2022-01-31 10:08:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2022-01-31 10:08:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 10:08:08,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:08:08,425 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:08:08,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 10:08:08,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 10:08:08,648 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:08:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:08:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1321422550, now seen corresponding path program 9 times [2022-01-31 10:08:08,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:08:08,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118993676] [2022-01-31 10:08:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:08:08,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:08:08,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:08:08,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193391203] [2022-01-31 10:08:08,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:08:08,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:08:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:08:08,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:08:08,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 10:08:08,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-31 10:08:08,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:08:08,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:08:08,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:08:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-31 10:08:09,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:08:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-31 10:08:09,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:08:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118993676] [2022-01-31 10:08:09,236 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:08:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193391203] [2022-01-31 10:08:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193391203] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:08:09,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:08:09,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:08:09,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789867796] [2022-01-31 10:08:09,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:08:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:08:09,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:08:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:08:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:08:09,237 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:08:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:08:09,571 INFO L93 Difference]: Finished difference Result 181 states and 206 transitions. [2022-01-31 10:08:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 10:08:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2022-01-31 10:08:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:08:09,573 INFO L225 Difference]: With dead ends: 181 [2022-01-31 10:08:09,573 INFO L226 Difference]: Without dead ends: 181 [2022-01-31 10:08:09,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-31 10:08:09,573 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:08:09,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 162 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 10:08:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-01-31 10:08:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2022-01-31 10:08:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 125 states have (on average 1.136) internal successors, (142), 128 states have internal predecessors, (142), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 10:08:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 170 transitions. [2022-01-31 10:08:09,580 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 170 transitions. Word has length 62 [2022-01-31 10:08:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:08:09,580 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 170 transitions. [2022-01-31 10:08:09,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:08:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 170 transitions. [2022-01-31 10:08:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 10:08:09,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:08:09,582 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:08:09,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 10:08:09,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 10:08:09,800 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:08:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:08:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2078722699, now seen corresponding path program 10 times [2022-01-31 10:08:09,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:08:09,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44235683] [2022-01-31 10:08:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:08:09,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:08:09,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:08:09,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009895384] [2022-01-31 10:08:09,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:08:09,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:08:09,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:08:09,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:08:09,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 10:08:09,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:08:09,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:08:09,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:08:09,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:08:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-31 10:08:10,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:08:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-31 10:08:10,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:08:10,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44235683] [2022-01-31 10:08:10,145 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:08:10,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009895384] [2022-01-31 10:08:10,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009895384] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:08:10,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:08:10,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:08:10,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55784382] [2022-01-31 10:08:10,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:08:10,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:08:10,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:08:10,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:08:10,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:08:10,146 INFO L87 Difference]: Start difference. First operand 150 states and 170 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:08:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:08:10,491 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2022-01-31 10:08:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:08:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-01-31 10:08:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:08:10,492 INFO L225 Difference]: With dead ends: 140 [2022-01-31 10:08:10,492 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 10:08:10,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:08:10,493 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 64 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:08:10,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 129 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 10:08:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 10:08:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 126. [2022-01-31 10:08:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 108 states have internal predecessors, (119), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 10:08:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2022-01-31 10:08:10,499 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 62 [2022-01-31 10:08:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:08:10,499 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2022-01-31 10:08:10,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:08:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2022-01-31 10:08:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-31 10:08:10,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:08:10,500 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:08:10,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 10:08:10,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 10:08:10,711 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:08:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:08:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1040686971, now seen corresponding path program 11 times [2022-01-31 10:08:10,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:08:10,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512390780] [2022-01-31 10:08:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:08:10,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:08:10,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:08:10,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717478042] [2022-01-31 10:08:10,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:08:10,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:08:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:08:10,728 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:08:10,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-31 10:08:10,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-31 10:08:10,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:08:10,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:08:10,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:08:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-31 10:08:10,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:08:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-31 10:08:11,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:08:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512390780] [2022-01-31 10:08:11,047 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:08:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717478042] [2022-01-31 10:08:11,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717478042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:08:11,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:08:11,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-31 10:08:11,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677889902] [2022-01-31 10:08:11,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:08:11,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 10:08:11,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:08:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 10:08:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:08:11,048 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:08:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:08:11,268 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2022-01-31 10:08:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 10:08:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2022-01-31 10:08:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:08:11,269 INFO L225 Difference]: With dead ends: 137 [2022-01-31 10:08:11,269 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 10:08:11,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:08:11,270 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 65 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:08:11,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 160 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:08:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 10:08:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2022-01-31 10:08:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.0909090909090908) internal successors, (108), 100 states have internal predecessors, (108), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 10:08:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2022-01-31 10:08:11,273 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 67 [2022-01-31 10:08:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:08:11,273 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2022-01-31 10:08:11,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:08:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2022-01-31 10:08:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 10:08:11,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:08:11,274 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:08:11,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-31 10:08:11,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 10:08:11,475 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:08:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:08:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash 381300528, now seen corresponding path program 12 times [2022-01-31 10:08:11,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:08:11,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79948920] [2022-01-31 10:08:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:08:11,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:08:11,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:08:11,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494293438] [2022-01-31 10:08:11,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:08:11,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:08:11,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:08:11,485 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:08:11,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-31 10:08:11,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-01-31 10:08:11,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:08:11,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:08:11,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:08:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-31 10:08:11,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:08:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-31 10:08:12,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:08:12,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79948920] [2022-01-31 10:08:12,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:08:12,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494293438] [2022-01-31 10:08:12,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494293438] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:08:12,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:08:12,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-31 10:08:12,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213469503] [2022-01-31 10:08:12,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:08:12,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 10:08:12,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:08:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 10:08:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:08:12,047 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:08:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:08:12,367 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2022-01-31 10:08:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 10:08:12,367 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2022-01-31 10:08:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:08:12,368 INFO L225 Difference]: With dead ends: 152 [2022-01-31 10:08:12,368 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 10:08:12,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2022-01-31 10:08:12,368 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:08:12,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 125 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:08:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 10:08:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 136. [2022-01-31 10:08:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 118 states have internal predecessors, (128), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 10:08:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2022-01-31 10:08:12,372 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 68 [2022-01-31 10:08:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:08:12,372 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2022-01-31 10:08:12,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:08:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2022-01-31 10:08:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 10:08:12,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:08:12,372 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 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] [2022-01-31 10:08:12,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-31 10:08:12,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:08:12,577 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:08:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:08:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2051508345, now seen corresponding path program 1 times [2022-01-31 10:08:12,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:08:12,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809577690] [2022-01-31 10:08:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:08:12,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:08:12,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:08:12,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103335973] [2022-01-31 10:08:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:08:12,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:08:12,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:08:12,597 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:08:12,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-31 10:08:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:08:14,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 101 conjunts are in the unsatisfiable core [2022-01-31 10:08:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:08:14,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-01-31 10:08:14,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-01-31 10:08:14,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:08:14,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 73 [2022-01-31 10:08:14,611 INFO L353 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2022-01-31 10:08:14,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 96 [2022-01-31 10:08:14,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:14,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 7 [2022-01-31 10:08:14,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 68 [2022-01-31 10:08:14,860 INFO L353 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2022-01-31 10:08:14,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 89 [2022-01-31 10:08:14,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:14,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:14,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2022-01-31 10:08:14,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-01-31 10:08:15,049 INFO L353 Elim1Store]: treesize reduction 286, result has 14.1 percent of original size [2022-01-31 10:08:15,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 109 [2022-01-31 10:08:15,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:08:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:15,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:15,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:15,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:15,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 32 [2022-01-31 10:08:31,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 133 [2022-01-31 10:08:31,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,289 INFO L353 Elim1Store]: treesize reduction 1015, result has 24.0 percent of original size [2022-01-31 10:08:33,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 132 treesize of output 395 [2022-01-31 10:08:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:33,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:08:34,240 INFO L353 Elim1Store]: treesize reduction 30, result has 75.6 percent of original size [2022-01-31 10:08:34,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 247 treesize of output 269 [2022-01-31 10:08:36,718 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:08:36,766 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:08:36,813 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:08:37,120 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:09:38,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 305 [2022-01-31 10:09:45,334 WARN L228 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 353 DAG size of output: 111 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:09:45,343 INFO L353 Elim1Store]: treesize reduction 3516, result has 14.5 percent of original size [2022-01-31 10:09:45,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 46 case distinctions, treesize of input 304 treesize of output 724 [2022-01-31 10:09:45,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:45,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:45,751 INFO L244 Elim1Store]: Index analysis took 210 ms [2022-01-31 10:09:46,438 INFO L353 Elim1Store]: treesize reduction 86, result has 55.9 percent of original size [2022-01-31 10:09:46,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 392 treesize of output 360 [2022-01-31 10:09:47,280 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:09:47,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:47,716 INFO L244 Elim1Store]: Index analysis took 316 ms [2022-01-31 10:09:48,420 INFO L353 Elim1Store]: treesize reduction 86, result has 55.9 percent of original size [2022-01-31 10:09:48,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 369 treesize of output 337 [2022-01-31 10:09:49,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:49,761 INFO L244 Elim1Store]: Index analysis took 316 ms [2022-01-31 10:09:49,767 INFO L353 Elim1Store]: treesize reduction 309, result has 0.3 percent of original size [2022-01-31 10:09:49,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 395 treesize of output 232 [2022-01-31 10:09:49,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:50,265 INFO L244 Elim1Store]: Index analysis took 342 ms [2022-01-31 10:09:50,977 INFO L353 Elim1Store]: treesize reduction 238, result has 23.2 percent of original size [2022-01-31 10:09:50,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 418 treesize of output 326 [2022-01-31 10:09:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:51,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:52,077 INFO L244 Elim1Store]: Index analysis took 245 ms [2022-01-31 10:09:52,554 INFO L353 Elim1Store]: treesize reduction 86, result has 44.5 percent of original size [2022-01-31 10:09:52,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 298 [2022-01-31 10:09:54,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:54,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:54,640 INFO L244 Elim1Store]: Index analysis took 151 ms [2022-01-31 10:09:54,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 355 treesize of output 210 [2022-01-31 10:09:54,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,090 INFO L244 Elim1Store]: Index analysis took 184 ms [2022-01-31 10:09:55,098 INFO L353 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2022-01-31 10:09:55,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 380 treesize of output 235 [2022-01-31 10:09:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,329 INFO L244 Elim1Store]: Index analysis took 160 ms [2022-01-31 10:09:55,335 INFO L353 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2022-01-31 10:09:55,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 357 treesize of output 212 [2022-01-31 10:09:55,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,761 INFO L244 Elim1Store]: Index analysis took 147 ms [2022-01-31 10:09:55,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 354 treesize of output 232 [2022-01-31 10:09:55,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:55,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:55,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:56,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:56,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 209 [2022-01-31 10:09:56,225 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:09:57,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:57,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:57,353 INFO L244 Elim1Store]: Index analysis took 112 ms [2022-01-31 10:09:57,370 INFO L353 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-01-31 10:09:57,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 372 treesize of output 247 [2022-01-31 10:09:58,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:09:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:58,204 INFO L244 Elim1Store]: Index analysis took 102 ms [2022-01-31 10:09:58,309 INFO L353 Elim1Store]: treesize reduction 21, result has 43.2 percent of original size [2022-01-31 10:09:58,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 349 treesize of output 240 [2022-01-31 10:09:59,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,411 INFO L244 Elim1Store]: Index analysis took 228 ms [2022-01-31 10:09:59,418 INFO L353 Elim1Store]: treesize reduction 106, result has 0.9 percent of original size [2022-01-31 10:09:59,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 375 treesize of output 227 [2022-01-31 10:09:59,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:09:59,798 INFO L244 Elim1Store]: Index analysis took 166 ms [2022-01-31 10:10:00,101 INFO L353 Elim1Store]: treesize reduction 87, result has 18.7 percent of original size [2022-01-31 10:10:00,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 398 treesize of output 269 [2022-01-31 10:10:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:10:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:01,317 INFO L244 Elim1Store]: Index analysis took 188 ms [2022-01-31 10:10:01,413 INFO L353 Elim1Store]: treesize reduction 21, result has 43.2 percent of original size [2022-01-31 10:10:01,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 373 treesize of output 241 [2022-01-31 10:10:03,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:03,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:03,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:03,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:10:03,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:03,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:03,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 205 [2022-01-31 10:10:04,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,610 INFO L244 Elim1Store]: Index analysis took 120 ms [2022-01-31 10:10:04,618 INFO L353 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2022-01-31 10:10:04,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 337 treesize of output 207 [2022-01-31 10:10:04,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:04,970 INFO L353 Elim1Store]: treesize reduction 67, result has 4.3 percent of original size [2022-01-31 10:10:04,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 360 treesize of output 233 [2022-01-31 10:10:06,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:10:06,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:10:06,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:06,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:06,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:06,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:06,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:06,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:06,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 334 treesize of output 227 [2022-01-31 10:10:06,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:10:07,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:07,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:07,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:07,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:07,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:07,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:10:07,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 204 [2022-01-31 10:10:49,191 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:10:52,569 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:11:14,770 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:11:17,950 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:11:25,760 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:11:46,386 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:12:25,029 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:12:29,250 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:12:38,216 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:13:02,639 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:13:40,572 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:13:45,361 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:13:54,653 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:14:20,294 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:15:03,672 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:15:08,787 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:15:19,959 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:15:48,093 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:16:32,246 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:16:37,649 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:16:48,793 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:17:17,924 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:18:05,968 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:18:11,979 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:18:24,165 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:18:59,313 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:19:54,188 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:20:01,063 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-31 10:20:15,113 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful