/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/array20_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:16:57,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:16:57,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:16:57,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:16:57,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:16:57,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:16:57,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:16:57,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:16:57,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:16:57,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:16:57,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:16:57,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:16:57,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:16:57,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:16:57,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:16:57,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:16:57,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:16:57,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:16:57,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:16:57,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:16:57,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:16:57,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:16:57,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:16:57,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:16:57,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:16:57,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:16:57,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:16:57,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:16:57,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:16:57,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:16:57,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:16:57,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:16:57,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:16:57,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:16:57,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:16:57,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:16:57,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:16:57,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:16:57,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:16:57,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:16:57,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:16:57,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:16:57,633 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:16:57,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:16:57,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:16:57,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:16:57,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:16:57,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:16:57,903 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:16:57,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array20_pattern.c [2022-01-31 10:16:57,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42988728d/aa64002db43347dbbd2f1bc01cf700e9/FLAGb28174a27 [2022-01-31 10:16:58,366 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:16:58,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array20_pattern.c [2022-01-31 10:16:58,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42988728d/aa64002db43347dbbd2f1bc01cf700e9/FLAGb28174a27 [2022-01-31 10:16:58,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42988728d/aa64002db43347dbbd2f1bc01cf700e9 [2022-01-31 10:16:58,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:16:58,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:16:58,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:16:58,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:16:58,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:16:58,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b538dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58, skipping insertion in model container [2022-01-31 10:16:58,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:16:58,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:16:58,548 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/array20_pattern.c[1444,1457] [2022-01-31 10:16:58,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:16:58,572 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:16:58,581 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/array20_pattern.c[1444,1457] [2022-01-31 10:16:58,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:16:58,600 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:16:58,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58 WrapperNode [2022-01-31 10:16:58,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:16:58,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:16:58,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:16:58,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:16:58,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:16:58,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:16:58,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:16:58,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:16:58,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (1/1) ... [2022-01-31 10:16:58,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:16:58,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:16:58,684 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 10:16:58,695 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 10:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:16:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:16:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:16:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:16:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:16:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:16:58,825 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:16:58,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:16:59,076 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:16:59,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:16:59,081 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 10:16:59,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:16:59 BoogieIcfgContainer [2022-01-31 10:16:59,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:16:59,083 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:16:59,083 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:16:59,084 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:16:59,087 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:16:59" (1/1) ... [2022-01-31 10:16:59,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:16:59 BasicIcfg [2022-01-31 10:16:59,105 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:16:59,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:16:59,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:16:59,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:16:59,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:16:58" (1/4) ... [2022-01-31 10:16:59,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fcc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:16:59, skipping insertion in model container [2022-01-31 10:16:59,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:16:58" (2/4) ... [2022-01-31 10:16:59,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fcc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:16:59, skipping insertion in model container [2022-01-31 10:16:59,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:16:59" (3/4) ... [2022-01-31 10:16:59,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fcc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:16:59, skipping insertion in model container [2022-01-31 10:16:59,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:16:59" (4/4) ... [2022-01-31 10:16:59,111 INFO L111 eAbstractionObserver]: Analyzing ICFG array20_pattern.cJordan [2022-01-31 10:16:59,116 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:16:59,116 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:16:59,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:16:59,172 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 10:16:59,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:16:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 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 10:16:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 10:16:59,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:16:59,200 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 10:16:59,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:16:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:16:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1563598307, now seen corresponding path program 1 times [2022-01-31 10:16:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:16:59,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438553025] [2022-01-31 10:16:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:16:59,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:16:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:16:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:16:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:16:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:16:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:16:59,414 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 10:16:59,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:16:59,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438553025] [2022-01-31 10:16:59,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438553025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:16:59,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:16:59,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:16:59,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979122191] [2022-01-31 10:16:59,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:16:59,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:16:59,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:16:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:16:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:16:59,450 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 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 10:16:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:16:59,541 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-01-31 10:16:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:16:59,544 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 10:16:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:16:59,553 INFO L225 Difference]: With dead ends: 41 [2022-01-31 10:16:59,553 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 10:16:59,554 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 10:16:59,559 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:16:59,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:16:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 10:16:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-31 10:16:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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 10:16:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-01-31 10:16:59,595 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2022-01-31 10:16:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:16:59,595 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-01-31 10:16:59,596 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 10:16:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-01-31 10:16:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 10:16:59,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:16:59,598 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] [2022-01-31 10:16:59,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:16:59,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:16:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:16:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1530716502, now seen corresponding path program 1 times [2022-01-31 10:16:59,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:16:59,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789413017] [2022-01-31 10:16:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:16:59,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:16:59,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:16:59,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86725237] [2022-01-31 10:16:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:16:59,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:16:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:16:59,640 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 10:16:59,651 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 10:16:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:16:59,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 10:16:59,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:16:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 10:16:59,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:16:59,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:16:59,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789413017] [2022-01-31 10:16:59,845 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:16:59,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86725237] [2022-01-31 10:16:59,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86725237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:16:59,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:16:59,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:16:59,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763528567] [2022-01-31 10:16:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:16:59,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:16:59,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:16:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:16:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:16:59,848 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:16:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:16:59,866 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-01-31 10:16:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 10:16:59,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-01-31 10:16:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:16:59,868 INFO L225 Difference]: With dead ends: 40 [2022-01-31 10:16:59,868 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 10:16:59,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:16:59,869 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:16:59,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:16:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 10:16:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-31 10:16:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 10:16:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-01-31 10:16:59,875 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 35 [2022-01-31 10:16:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:16:59,876 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-01-31 10:16:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:16:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-01-31 10:16:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 10:16:59,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:16:59,878 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] [2022-01-31 10:16:59,900 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 10:17:00,095 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 10:17:00,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:17:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:17:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash 978510442, now seen corresponding path program 1 times [2022-01-31 10:17:00,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:17:00,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688668651] [2022-01-31 10:17:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:17:00,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:17:00,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:17:00,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173073221] [2022-01-31 10:17:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:17:00,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:17:00,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:17:00,117 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 10:17:00,135 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 10:17:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:17:00,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:17:00,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:17:00,283 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 10:17:00,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:17:00,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:17:00,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688668651] [2022-01-31 10:17:00,285 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:17:00,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173073221] [2022-01-31 10:17:00,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173073221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:17:00,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:17:00,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:17:00,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505971920] [2022-01-31 10:17:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:17:00,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:17:00,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:17:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:17:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:17:00,288 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 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 10:17:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:17:00,374 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2022-01-31 10:17:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:17:00,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 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 40 [2022-01-31 10:17:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:17:00,377 INFO L225 Difference]: With dead ends: 61 [2022-01-31 10:17:00,378 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 10:17:00,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 10:17:00,381 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:17:00,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 94 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:17:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 10:17:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-01-31 10:17:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 10:17:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-01-31 10:17:00,393 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 40 [2022-01-31 10:17:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:17:00,394 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-01-31 10:17:00,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 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 10:17:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-01-31 10:17:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 10:17:00,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:17:00,398 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, 1] [2022-01-31 10:17:00,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 10:17:00,620 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 10:17:00,621 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:17:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:17:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2042070073, now seen corresponding path program 1 times [2022-01-31 10:17:00,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:17:00,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312078895] [2022-01-31 10:17:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:17:00,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:17:00,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:17:00,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550335087] [2022-01-31 10:17:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:17:00,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:17:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:17:00,640 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 10:17:00,646 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 10:17:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:17:00,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:17:00,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:17:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:17:00,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:17:00,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:17:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312078895] [2022-01-31 10:17:00,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:17:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550335087] [2022-01-31 10:17:00,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550335087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:17:00,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:17:00,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:17:00,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812364508] [2022-01-31 10:17:00,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:17:00,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:17:00,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:17:00,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:17:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:17:00,784 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 10:17:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:17:00,823 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-01-31 10:17:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:17:00,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 43 [2022-01-31 10:17:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:17:00,825 INFO L225 Difference]: With dead ends: 41 [2022-01-31 10:17:00,825 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 10:17:00,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 10:17:00,826 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:17:00,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 70 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:17:00,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 10:17:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-01-31 10:17:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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 10:17:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-01-31 10:17:00,831 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 43 [2022-01-31 10:17:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:17:00,831 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-01-31 10:17:00,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 10:17:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-01-31 10:17:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 10:17:00,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:17:00,832 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, 1, 1, 1] [2022-01-31 10:17:00,852 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 10:17:01,043 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 10:17:01,044 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:17:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:17:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1553445182, now seen corresponding path program 1 times [2022-01-31 10:17:01,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:17:01,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495873419] [2022-01-31 10:17:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:17:01,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:17:01,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:17:01,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540768697] [2022-01-31 10:17:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:17:01,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:17:01,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:17:01,072 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 10:17:01,079 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 10:17:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:17:01,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-31 10:17:01,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:17:01,822 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 151 treesize of output 142 [2022-01-31 10:17:01,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:17:01,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:17:01,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:17:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:17:01,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 151 [2022-01-31 10:17:01,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:17:01,900 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 23 treesize of output 3 [2022-01-31 10:17:01,921 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 25 treesize of output 3 [2022-01-31 10:17:01,930 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 20 treesize of output 3 [2022-01-31 10:17:02,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:17:02,156 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:17:02,156 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 50 treesize of output 27 [2022-01-31 10:17:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:17:02,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:17:02,523 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 390 treesize of output 374 [2022-01-31 10:17:02,554 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:17:02,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 374 treesize of output 399 [2022-01-31 10:17:02,636 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 28 treesize of output 4 [2022-01-31 10:17:02,670 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 28 treesize of output 4 [2022-01-31 10:17:02,711 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 28 treesize of output 4 [2022-01-31 10:17:02,880 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 28 treesize of output 4 [2022-01-31 10:17:02,947 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 28 treesize of output 4 [2022-01-31 10:17:03,009 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 28 treesize of output 4 [2022-01-31 10:17:03,209 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 27 treesize of output 4 [2022-01-31 10:17:03,234 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 27 treesize of output 4 [2022-01-31 10:17:03,284 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 27 treesize of output 4 [2022-01-31 10:17:03,515 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 30 treesize of output 4 [2022-01-31 10:17:03,541 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 30 treesize of output 4 [2022-01-31 10:17:03,597 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 30 treesize of output 4 [2022-01-31 10:17:03,768 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 31 treesize of output 4 [2022-01-31 10:17:03,804 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 31 treesize of output 4 [2022-01-31 10:17:03,838 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 31 treesize of output 4 [2022-01-31 10:17:04,029 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 26 treesize of output 4 [2022-01-31 10:17:04,063 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 26 treesize of output 4 [2022-01-31 10:17:04,080 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 26 treesize of output 4 [2022-01-31 10:17:04,251 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 29 treesize of output 4 [2022-01-31 10:17:04,277 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 29 treesize of output 4 [2022-01-31 10:17:04,341 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 29 treesize of output 4 [2022-01-31 10:17:04,496 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 29 treesize of output 4 [2022-01-31 10:17:04,523 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 29 treesize of output 4 [2022-01-31 10:17:04,546 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 29 treesize of output 4 [2022-01-31 10:17:10,995 WARN L228 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 184 DAG size of output: 120 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:17:10,999 INFO L353 Elim1Store]: treesize reduction 1295, result has 25.1 percent of original size [2022-01-31 10:17:11,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 381 treesize of output 614 [2022-01-31 10:22:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:22:25,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:22:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495873419] [2022-01-31 10:22:25,676 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:22:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540768697] [2022-01-31 10:22:25,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540768697] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:22:25,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:22:25,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 34 [2022-01-31 10:22:25,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355359678] [2022-01-31 10:22:25,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:22:25,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 10:22:25,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:22:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 10:22:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 10:22:25,678 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 34 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 6 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-31 10:22:37,649 WARN L228 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 67 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:22:44,706 WARN L228 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 70 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:23:00,258 WARN L228 SmtUtils]: Spent 14.52s on a formula simplification. DAG size of input: 87 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 10:23:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:02,039 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2022-01-31 10:23:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 10:23:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 6 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2022-01-31 10:23:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:02,042 INFO L225 Difference]: With dead ends: 120 [2022-01-31 10:23:02,042 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 10:23:02,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=761, Invalid=3931, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 10:23:02,044 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 279 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:02,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 395 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 654 Invalid, 0 Unknown, 187 Unchecked, 3.4s Time] [2022-01-31 10:23:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 10:23:02,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 71. [2022-01-31 10:23:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:23:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2022-01-31 10:23:02,052 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 45 [2022-01-31 10:23:02,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:02,053 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2022-01-31 10:23:02,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.9375) internal successors, (62), 31 states have internal predecessors, (62), 6 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-31 10:23:02,053 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2022-01-31 10:23:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 10:23:02,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:02,054 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, 1, 1, 1] [2022-01-31 10:23:02,071 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 10:23:02,259 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 10:23:02,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 537352380, now seen corresponding path program 1 times [2022-01-31 10:23:02,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664833996] [2022-01-31 10:23:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:02,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:02,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:02,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652349601] [2022-01-31 10:23:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:02,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:02,276 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 10:23:02,278 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 10:23:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:23:02,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 10:23:02,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 10:23:02,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:23:02,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664833996] [2022-01-31 10:23:02,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:02,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652349601] [2022-01-31 10:23:02,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652349601] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:02,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:02,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2022-01-31 10:23:02,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304067136] [2022-01-31 10:23:02,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:02,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:23:02,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:23:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:23:02,874 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 18 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 10:23:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:03,252 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2022-01-31 10:23:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 10:23:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2022-01-31 10:23:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:03,254 INFO L225 Difference]: With dead ends: 127 [2022-01-31 10:23:03,254 INFO L226 Difference]: Without dead ends: 127 [2022-01-31 10:23:03,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-01-31 10:23:03,255 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 117 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:03,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 193 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:23:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-31 10:23:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 73. [2022-01-31 10:23:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 60 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:23:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-01-31 10:23:03,263 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 45 [2022-01-31 10:23:03,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:03,263 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-01-31 10:23:03,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 10:23:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-01-31 10:23:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:23:03,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:03,264 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, 1, 1, 1] [2022-01-31 10:23:03,293 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 10:23:03,479 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 10:23:03,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 254999865, now seen corresponding path program 2 times [2022-01-31 10:23:03,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:03,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882278609] [2022-01-31 10:23:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:03,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:03,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:03,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592992422] [2022-01-31 10:23:03,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:23:03,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:03,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:03,494 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 10:23:03,495 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 10:23:03,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:23:03,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:23:03,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:03,653 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 10:23:03,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:03,740 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 10:23:03,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:03,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882278609] [2022-01-31 10:23:03,740 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:03,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592992422] [2022-01-31 10:23:03,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592992422] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:03,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:03,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:23:03,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31620360] [2022-01-31 10:23:03,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:03,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:23:03,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:23:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:23:03,744 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 10:23:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:03,902 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2022-01-31 10:23:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 10:23:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 47 [2022-01-31 10:23:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:03,904 INFO L225 Difference]: With dead ends: 112 [2022-01-31 10:23:03,904 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 10:23:03,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 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 10:23:03,905 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 75 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:03,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 155 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:23:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 10:23:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2022-01-31 10:23:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 73 states have internal predecessors, (86), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:23:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2022-01-31 10:23:03,919 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 47 [2022-01-31 10:23:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:03,920 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2022-01-31 10:23:03,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 10:23:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2022-01-31 10:23:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:23:03,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:03,921 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, 1, 1, 1] [2022-01-31 10:23:03,938 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 10:23:04,123 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 10:23:04,124 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:04,124 INFO L85 PathProgramCache]: Analyzing trace with hash 136360195, now seen corresponding path program 3 times [2022-01-31 10:23:04,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:04,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168181782] [2022-01-31 10:23:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:04,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:04,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:04,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581223403] [2022-01-31 10:23:04,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:23:04,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:04,140 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 10:23:04,141 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 10:23:04,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 10:23:04,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:04,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-31 10:23:04,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:04,475 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 151 treesize of output 142 [2022-01-31 10:23:04,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 153 [2022-01-31 10:23:04,518 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 25 treesize of output 3 [2022-01-31 10:23:04,527 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 23 treesize of output 3 [2022-01-31 10:23:04,533 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 22 treesize of output 3 [2022-01-31 10:23:04,705 INFO L353 Elim1Store]: treesize reduction 59, result has 35.2 percent of original size [2022-01-31 10:23:04,706 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 69 treesize of output 55 [2022-01-31 10:23:05,047 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 10:23:05,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:05,339 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 390 treesize of output 374 [2022-01-31 10:23:05,366 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:23:05,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 374 treesize of output 399 [2022-01-31 10:23:05,391 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-01-31 10:23:05,405 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 27 treesize of output 4 [2022-01-31 10:23:05,438 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 27 treesize of output 4 [2022-01-31 10:23:05,559 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 28 treesize of output 4 [2022-01-31 10:23:05,571 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 29 treesize of output 4 [2022-01-31 10:23:05,602 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 29 treesize of output 4 [2022-01-31 10:23:05,831 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 26 treesize of output 4 [2022-01-31 10:23:05,841 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 26 treesize of output 4 [2022-01-31 10:23:05,939 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 28 treesize of output 4 [2022-01-31 10:23:05,982 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 28 treesize of output 4 [2022-01-31 10:23:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:06,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:23:06,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:23:06,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:23:06,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:23:06,109 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:23:06,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 147 [2022-01-31 10:23:07,456 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 29 treesize of output 4 [2022-01-31 10:23:07,462 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 30 treesize of output 4 [2022-01-31 10:23:07,468 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 31 treesize of output 4 [2022-01-31 10:23:08,893 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 10:23:08,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:08,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168181782] [2022-01-31 10:23:08,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:08,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581223403] [2022-01-31 10:23:08,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581223403] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:08,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:08,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2022-01-31 10:23:08,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435244394] [2022-01-31 10:23:08,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:08,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 10:23:08,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 10:23:08,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-01-31 10:23:08,895 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 27 states, 25 states have (on average 2.36) internal successors, (59), 26 states have internal predecessors, (59), 6 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-31 10:23:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:10,453 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2022-01-31 10:23:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 10:23:10,453 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.36) internal successors, (59), 26 states have internal predecessors, (59), 6 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2022-01-31 10:23:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:10,454 INFO L225 Difference]: With dead ends: 115 [2022-01-31 10:23:10,454 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 10:23:10,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=246, Invalid=1394, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 10:23:10,456 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 96 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:10,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 212 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 445 Invalid, 0 Unknown, 83 Unchecked, 0.8s Time] [2022-01-31 10:23:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 10:23:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2022-01-31 10:23:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 73 states have internal predecessors, (86), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:23:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2022-01-31 10:23:10,464 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 47 [2022-01-31 10:23:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:10,464 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2022-01-31 10:23:10,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.36) internal successors, (59), 26 states have internal predecessors, (59), 6 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-31 10:23:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2022-01-31 10:23:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:23:10,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:10,467 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, 1, 1, 1] [2022-01-31 10:23:10,485 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 10:23:10,675 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 10:23:10,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -879732607, now seen corresponding path program 2 times [2022-01-31 10:23:10,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:10,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356434463] [2022-01-31 10:23:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:10,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:10,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:10,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399928674] [2022-01-31 10:23:10,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:23:10,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:10,690 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 10:23:10,711 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 10:23:10,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:23:10,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:10,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:23:10,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:23:10,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-31 10:23:10,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356434463] [2022-01-31 10:23:10,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:10,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399928674] [2022-01-31 10:23:10,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399928674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:10,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:10,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:23:10,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660659114] [2022-01-31 10:23:10,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:10,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:23:10,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:23:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:23:10,970 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 10:23:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:11,097 INFO L93 Difference]: Finished difference Result 116 states and 140 transitions. [2022-01-31 10:23:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:23:11,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 47 [2022-01-31 10:23:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:11,098 INFO L225 Difference]: With dead ends: 116 [2022-01-31 10:23:11,098 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 10:23:11,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-31 10:23:11,099 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 46 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:11,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 133 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:23:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 10:23:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2022-01-31 10:23:11,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 87 states have internal predecessors, (104), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:23:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2022-01-31 10:23:11,105 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 47 [2022-01-31 10:23:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:11,105 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2022-01-31 10:23:11,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 10:23:11,106 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2022-01-31 10:23:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 10:23:11,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:11,106 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, 1, 1, 1] [2022-01-31 10:23:11,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 10:23:11,315 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 10:23:11,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:11,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash -934952062, now seen corresponding path program 4 times [2022-01-31 10:23:11,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224857664] [2022-01-31 10:23:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:11,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:11,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666509032] [2022-01-31 10:23:11,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:23:11,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:11,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:11,326 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 10:23:11,343 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 10:23:11,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:23:11,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:11,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:23:11,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:23:11,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-31 10:23:11,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:11,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224857664] [2022-01-31 10:23:11,550 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:11,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666509032] [2022-01-31 10:23:11,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666509032] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:11,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:11,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:23:11,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423739054] [2022-01-31 10:23:11,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:11,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:23:11,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:23:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:23:11,551 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 10:23:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:11,685 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2022-01-31 10:23:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 10:23:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 50 [2022-01-31 10:23:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:11,686 INFO L225 Difference]: With dead ends: 111 [2022-01-31 10:23:11,686 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 10:23:11,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:23:11,687 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:11,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 137 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:23:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 10:23:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2022-01-31 10:23:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 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 10:23:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2022-01-31 10:23:11,691 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 50 [2022-01-31 10:23:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:11,691 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2022-01-31 10:23:11,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 10:23:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2022-01-31 10:23:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 10:23:11,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:11,692 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:23:11,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-31 10:23:11,892 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 10:23:11,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1798136888, now seen corresponding path program 3 times [2022-01-31 10:23:11,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:11,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299828985] [2022-01-31 10:23:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:11,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:11,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:11,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051063457] [2022-01-31 10:23:11,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:23:11,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:11,924 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 10:23:11,953 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 10:23:12,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 10:23:12,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:12,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 10:23:12,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 10:23:12,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-31 10:23:12,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:12,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299828985] [2022-01-31 10:23:12,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:12,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051063457] [2022-01-31 10:23:12,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051063457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:12,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:12,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2022-01-31 10:23:12,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454646116] [2022-01-31 10:23:12,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:12,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 10:23:12,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 10:23:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:23:12,480 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 19 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-31 10:23:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:12,744 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2022-01-31 10:23:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 10:23:12,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 54 [2022-01-31 10:23:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:12,745 INFO L225 Difference]: With dead ends: 129 [2022-01-31 10:23:12,745 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 10:23:12,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2022-01-31 10:23:12,746 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 107 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:12,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 201 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:23:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 10:23:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 69. [2022-01-31 10:23:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 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 10:23:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2022-01-31 10:23:12,751 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 54 [2022-01-31 10:23:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:12,751 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2022-01-31 10:23:12,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-31 10:23:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2022-01-31 10:23:12,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 10:23:12,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:12,752 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:23:12,774 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 10:23:12,974 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 10:23:12,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 59148278, now seen corresponding path program 5 times [2022-01-31 10:23:12,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:12,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534995899] [2022-01-31 10:23:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:12,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:12,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:12,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694715052] [2022-01-31 10:23:12,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:23:12,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:12,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:12,993 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 10:23:13,002 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 10:23:13,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-31 10:23:13,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:13,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:23:13,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:23:13,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:23:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 10:23:13,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:23:13,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534995899] [2022-01-31 10:23:13,308 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:23:13,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694715052] [2022-01-31 10:23:13,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694715052] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:23:13,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:23:13,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:23:13,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543578098] [2022-01-31 10:23:13,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:23:13,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:23:13,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:23:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:23:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:23:13,310 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 10:23:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:23:13,456 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-01-31 10:23:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 10:23:13,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 59 [2022-01-31 10:23:13,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:23:13,457 INFO L225 Difference]: With dead ends: 65 [2022-01-31 10:23:13,457 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 10:23:13,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:23:13,458 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:23:13,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 104 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:23:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 10:23:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2022-01-31 10:23:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 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 10:23:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-01-31 10:23:13,461 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 59 [2022-01-31 10:23:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:23:13,461 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-01-31 10:23:13,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 10:23:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-01-31 10:23:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 10:23:13,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:23:13,462 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, 1, 1, 1] [2022-01-31 10:23:13,480 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 10:23:13,671 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 10:23:13,671 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:23:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:23:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1103606634, now seen corresponding path program 6 times [2022-01-31 10:23:13,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:23:13,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960309175] [2022-01-31 10:23:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:23:13,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:23:13,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:23:13,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40187863] [2022-01-31 10:23:13,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:23:13,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:23:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:23:13,692 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 10:23:13,693 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 10:23:13,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-31 10:23:13,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:23:13,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-31 10:23:13,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:23:14,061 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 55 treesize of output 50 [2022-01-31 10:23:14,063 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 18 treesize of output 17 [2022-01-31 10:23:14,071 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 16 treesize of output 15 [2022-01-31 10:23:14,121 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 10:23:14,141 INFO L353 Elim1Store]: treesize reduction 124, result has 17.9 percent of original size [2022-01-31 10:23:14,142 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 10:23:14,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,156 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 40 treesize of output 17 [2022-01-31 10:23:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,185 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 10:23:14,408 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 100 treesize of output 91 [2022-01-31 10:23:14,440 INFO L353 Elim1Store]: treesize reduction 335, result has 17.5 percent of original size [2022-01-31 10:23:14,440 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 90 treesize of output 135 [2022-01-31 10:23:14,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:23:14,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,479 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 83 treesize of output 27 [2022-01-31 10:23:14,627 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 82 treesize of output 71 [2022-01-31 10:23:14,686 INFO L353 Elim1Store]: treesize reduction 272, result has 15.8 percent of original size [2022-01-31 10:23:14,686 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 70 treesize of output 108 [2022-01-31 10:23:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:14,744 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 85 treesize of output 44 [2022-01-31 10:23:31,204 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 354 treesize of output 329 [2022-01-31 10:23:39,618 WARN L228 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 294 DAG size of output: 107 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:23:39,619 INFO L353 Elim1Store]: treesize reduction 1983, result has 16.4 percent of original size [2022-01-31 10:23:39,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 8 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 340 treesize of output 719 [2022-01-31 10:23:39,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:39,890 INFO L353 Elim1Store]: treesize reduction 3, result has 89.7 percent of original size [2022-01-31 10:23:39,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 67 [2022-01-31 10:23:39,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:23:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,078 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 70 treesize of output 32 [2022-01-31 10:23:40,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 41 [2022-01-31 10:23:40,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 41 [2022-01-31 10:23:40,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 126 [2022-01-31 10:23:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 90 [2022-01-31 10:23:40,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 82 [2022-01-31 10:23:40,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:40,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 127 [2022-01-31 10:23:46,411 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 714 treesize of output 663 [2022-01-31 10:23:49,376 INFO L353 Elim1Store]: treesize reduction 1689, result has 16.4 percent of original size [2022-01-31 10:23:49,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 666 treesize of output 606 [2022-01-31 10:23:49,866 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:23:49,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,151 INFO L244 Elim1Store]: Index analysis took 188 ms [2022-01-31 10:23:50,172 INFO L353 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2022-01-31 10:23:50,173 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 229 treesize of output 160 [2022-01-31 10:23:50,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,530 INFO L244 Elim1Store]: Index analysis took 105 ms [2022-01-31 10:23:50,547 INFO L353 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2022-01-31 10:23:50,548 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 365 treesize of output 276 [2022-01-31 10:23:50,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:50,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:23:51,120 INFO L353 Elim1Store]: treesize reduction 158, result has 34.4 percent of original size [2022-01-31 10:23:51,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 519 treesize of output 320