/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/array6_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:27:04,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:27:04,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:27:04,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:27:04,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:27:04,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:27:04,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:27:04,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:27:04,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:27:04,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:27:04,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:27:04,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:27:04,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:27:04,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:27:04,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:27:04,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:27:04,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:27:04,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:27:04,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:27:04,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:27:04,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:27:04,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:27:04,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:27:04,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:27:04,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:27:04,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:27:04,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:27:04,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:27:04,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:27:04,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:27:04,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:27:04,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:27:04,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:27:04,646 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:27:04,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:27:04,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:27:04,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:27:04,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:27:04,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:27:04,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:27:04,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:27:04,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:27:04,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:27:04,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:27:04,648 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:27:04,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:27:04,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:27:04,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:27:04,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:27:04,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:27:04,839 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:27:04,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array6_pattern.c [2022-01-31 10:27:04,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce95d8cff/218f5d93edfe49b38f58ce70afd738a4/FLAGa16d72bf2 [2022-01-31 10:27:05,238 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:27:05,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array6_pattern.c [2022-01-31 10:27:05,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce95d8cff/218f5d93edfe49b38f58ce70afd738a4/FLAGa16d72bf2 [2022-01-31 10:27:05,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce95d8cff/218f5d93edfe49b38f58ce70afd738a4 [2022-01-31 10:27:05,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:27:05,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:27:05,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:27:05,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:27:05,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:27:05,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5117c05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05, skipping insertion in model container [2022-01-31 10:27:05,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:27:05,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:27:05,417 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/array6_pattern.c[1356,1369] [2022-01-31 10:27:05,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:27:05,451 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:27:05,492 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/array6_pattern.c[1356,1369] [2022-01-31 10:27:05,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:27:05,512 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:27:05,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05 WrapperNode [2022-01-31 10:27:05,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:27:05,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:27:05,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:27:05,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:27:05,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:27:05,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:27:05,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:27:05,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:27:05,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:27:05,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:05,593 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 10:27:05,610 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 10:27:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:27:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:27:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:27:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:27:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:27:05,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:27:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:27:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:27:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:27:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:27:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:27:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:27:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:27:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:27:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:27:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:27:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:27:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:27:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:27:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:27:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:27:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:27:05,701 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:27:05,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:27:05,812 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:27:05,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:27:05,817 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 10:27:05,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:27:05 BoogieIcfgContainer [2022-01-31 10:27:05,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:27:05,820 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:27:05,820 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:27:05,821 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:27:05,824 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:27:05" (1/1) ... [2022-01-31 10:27:05,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:27:05 BasicIcfg [2022-01-31 10:27:05,838 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:27:05,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:27:05,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:27:05,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:27:05,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:27:05" (1/4) ... [2022-01-31 10:27:05,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283a6e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:27:05, skipping insertion in model container [2022-01-31 10:27:05,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:27:05" (2/4) ... [2022-01-31 10:27:05,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283a6e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:27:05, skipping insertion in model container [2022-01-31 10:27:05,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:27:05" (3/4) ... [2022-01-31 10:27:05,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283a6e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:27:05, skipping insertion in model container [2022-01-31 10:27:05,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:27:05" (4/4) ... [2022-01-31 10:27:05,848 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.cJordan [2022-01-31 10:27:05,853 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:27:05,854 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:27:05,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:27:05,894 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 10:27:05,895 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:27:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:27:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 10:27:05,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:05,910 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 10:27:05,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1504316797, now seen corresponding path program 1 times [2022-01-31 10:27:05,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:05,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565589435] [2022-01-31 10:27:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:05,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:27:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:27:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,118 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 10:27:06,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:06,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565589435] [2022-01-31 10:27:06,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565589435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:27:06,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:27:06,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:27:06,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312829118] [2022-01-31 10:27:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:27:06,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:27:06,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:27:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:27:06,150 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 10:27:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:06,203 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-01-31 10:27:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:27:06,205 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 10:27:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:06,211 INFO L225 Difference]: With dead ends: 33 [2022-01-31 10:27:06,211 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 10:27:06,212 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 10:27:06,215 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:06,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:27:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 10:27:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 10:27:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:27:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-31 10:27:06,244 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 20 [2022-01-31 10:27:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:06,244 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-31 10:27:06,244 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 10:27:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-31 10:27:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 10:27:06,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:06,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:06,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:27:06,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -879387650, now seen corresponding path program 1 times [2022-01-31 10:27:06,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:06,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249858595] [2022-01-31 10:27:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:06,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:27:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:27:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 10:27:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:27:06,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:06,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249858595] [2022-01-31 10:27:06,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249858595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:27:06,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:27:06,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:27:06,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234736624] [2022-01-31 10:27:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:27:06,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:27:06,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:27:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:27:06,457 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:06,567 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-01-31 10:27:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:27:06,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-01-31 10:27:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:06,571 INFO L225 Difference]: With dead ends: 30 [2022-01-31 10:27:06,571 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 10:27:06,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-31 10:27:06,574 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:06,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 10:27:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 10:27:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:27:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-31 10:27:06,580 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 27 [2022-01-31 10:27:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:06,581 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-31 10:27:06,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-31 10:27:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 10:27:06,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:06,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:06,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 10:27:06,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1925561755, now seen corresponding path program 1 times [2022-01-31 10:27:06,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702742186] [2022-01-31 10:27:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:06,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:27:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:27:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 10:27:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:27:06,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:06,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702742186] [2022-01-31 10:27:06,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702742186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:27:06,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:27:06,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:27:06,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122863525] [2022-01-31 10:27:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:27:06,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:27:06,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:27:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:27:06,705 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:06,787 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-01-31 10:27:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 10:27:06,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-01-31 10:27:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:06,791 INFO L225 Difference]: With dead ends: 40 [2022-01-31 10:27:06,791 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 10:27:06,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 10:27:06,798 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:06,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 49 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 10:27:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-31 10:27:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:27:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-31 10:27:06,811 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 29 [2022-01-31 10:27:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:06,811 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-31 10:27:06,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-31 10:27:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 10:27:06,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:06,812 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:06,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 10:27:06,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:06,813 INFO L85 PathProgramCache]: Analyzing trace with hash -74774123, now seen corresponding path program 1 times [2022-01-31 10:27:06,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:06,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755800433] [2022-01-31 10:27:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:06,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:06,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:06,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894221215] [2022-01-31 10:27:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:06,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:06,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:06,851 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 10:27:06,853 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 10:27:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:06,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:27:06,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:27:07,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 10:27:07,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755800433] [2022-01-31 10:27:07,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:07,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894221215] [2022-01-31 10:27:07,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894221215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:27:07,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:27:07,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:27:07,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998645162] [2022-01-31 10:27:07,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:07,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:27:07,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:27:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:27:07,213 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:27:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:07,407 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2022-01-31 10:27:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 10:27:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-01-31 10:27:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:07,411 INFO L225 Difference]: With dead ends: 62 [2022-01-31 10:27:07,411 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 10:27:07,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-01-31 10:27:07,415 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:07,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 135 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 10:27:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2022-01-31 10:27:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:27:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-01-31 10:27:07,424 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-01-31 10:27:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:07,425 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-01-31 10:27:07,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:27:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-01-31 10:27:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 10:27:07,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:07,427 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:07,455 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 10:27:07,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:07,644 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 890764809, now seen corresponding path program 2 times [2022-01-31 10:27:07,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:07,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426062113] [2022-01-31 10:27:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:07,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:07,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:07,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371474134] [2022-01-31 10:27:07,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:27:07,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:07,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:07,664 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 10:27:07,667 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 10:27:07,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:27:07,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:27:07,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:27:07,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:07,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:27:07,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426062113] [2022-01-31 10:27:07,936 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371474134] [2022-01-31 10:27:07,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371474134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:27:07,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:27:07,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-01-31 10:27:07,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197157755] [2022-01-31 10:27:07,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:27:07,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:27:07,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:27:07,938 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:27:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:08,058 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-01-31 10:27:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 10:27:08,058 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-01-31 10:27:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:08,059 INFO L225 Difference]: With dead ends: 40 [2022-01-31 10:27:08,059 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 10:27:08,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:27:08,060 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:08,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 110 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 10:27:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-31 10:27:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 10:27:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2022-01-31 10:27:08,064 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2022-01-31 10:27:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:08,065 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2022-01-31 10:27:08,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:27:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-01-31 10:27:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 10:27:08,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:08,067 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:08,091 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 10:27:08,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:08,286 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1284526211, now seen corresponding path program 3 times [2022-01-31 10:27:08,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644102828] [2022-01-31 10:27:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:08,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:08,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:08,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874450454] [2022-01-31 10:27:08,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:27:08,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:08,311 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 10:27:08,312 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 10:27:08,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-31 10:27:08,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:27:08,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-31 10:27:08,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:08,532 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 10 treesize of output 8 [2022-01-31 10:27:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-31 10:27:08,594 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 10:27:08,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-01-31 10:27:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-01-31 10:27:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-01-31 10:27:08,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2022-01-31 10:27:08,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-01-31 10:27:08,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,858 INFO L353 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-01-31 10:27:08,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-01-31 10:27:08,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:08,887 INFO L353 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-01-31 10:27:08,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-01-31 10:27:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:09,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:09,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:09,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:09,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:09,714 INFO L353 Elim1Store]: treesize reduction 302, result has 8.8 percent of original size [2022-01-31 10:27:09,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 147 treesize of output 143 [2022-01-31 10:27:13,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:13,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:14,246 INFO L353 Elim1Store]: treesize reduction 402, result has 34.8 percent of original size [2022-01-31 10:27:14,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 11 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 136 treesize of output 262 [2022-01-31 10:27:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:20,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:35,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644102828] [2022-01-31 10:27:35,869 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874450454] [2022-01-31 10:27:35,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874450454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:27:35,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:27:35,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-01-31 10:27:35,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165941916] [2022-01-31 10:27:35,870 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:35,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 10:27:35,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 10:27:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=896, Unknown=9, NotChecked=0, Total=1056 [2022-01-31 10:27:35,871 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 20 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:36,093 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-01-31 10:27:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 10:27:36,094 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 20 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-01-31 10:27:36,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:36,095 INFO L225 Difference]: With dead ends: 61 [2022-01-31 10:27:36,095 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 10:27:36,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=172, Invalid=1079, Unknown=9, NotChecked=0, Total=1260 [2022-01-31 10:27:36,096 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:36,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 308 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 95 Unchecked, 0.1s Time] [2022-01-31 10:27:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 10:27:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2022-01-31 10:27:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:27:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-01-31 10:27:36,101 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 39 [2022-01-31 10:27:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:36,102 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-01-31 10:27:36,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 20 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-01-31 10:27:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 10:27:36,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:36,103 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2022-01-31 10:27:36,165 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 10:27:36,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:36,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1612356384, now seen corresponding path program 4 times [2022-01-31 10:27:36,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717341106] [2022-01-31 10:27:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:36,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:36,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:36,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227974015] [2022-01-31 10:27:36,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:27:36,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:36,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:36,345 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 10:27:36,346 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 10:27:36,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:27:36,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:27:36,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 10:27:36,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:36,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:27:36,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717341106] [2022-01-31 10:27:36,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227974015] [2022-01-31 10:27:36,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227974015] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:27:36,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:27:36,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-31 10:27:36,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793286277] [2022-01-31 10:27:36,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:36,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 10:27:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 10:27:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:27:36,672 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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 10:27:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:36,811 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2022-01-31 10:27:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:27:36,812 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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 41 [2022-01-31 10:27:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:36,812 INFO L225 Difference]: With dead ends: 100 [2022-01-31 10:27:36,812 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 10:27:36,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-01-31 10:27:36,813 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:36,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 178 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 10:27:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2022-01-31 10:27:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.096774193548387) internal successors, (68), 62 states have internal predecessors, (68), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:27:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-01-31 10:27:36,835 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 41 [2022-01-31 10:27:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:36,835 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-01-31 10:27:36,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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 10:27:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-01-31 10:27:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 10:27:36,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:36,837 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:36,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 10:27:37,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:37,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:37,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2013694426, now seen corresponding path program 5 times [2022-01-31 10:27:37,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:37,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146365737] [2022-01-31 10:27:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:37,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:37,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:37,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908517560] [2022-01-31 10:27:37,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:27:37,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:37,086 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 10:27:37,108 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 10:27:37,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-31 10:27:37,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:27:37,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-31 10:27:37,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:37,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-01-31 10:27:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-31 10:27:37,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 34 treesize of output 34 [2022-01-31 10:27:37,410 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 10:27:37,414 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 14 treesize of output 13 [2022-01-31 10:27:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2022-01-31 10:27:37,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2022-01-31 10:27:37,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-31 10:27:37,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-01-31 10:27:37,632 INFO L353 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-01-31 10:27:37,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 88 [2022-01-31 10:27:37,639 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2022-01-31 10:27:37,655 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-31 10:27:37,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 66 treesize of output 72 [2022-01-31 10:27:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-01-31 10:27:37,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 40 [2022-01-31 10:27:37,727 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-31 10:27:37,727 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 54 treesize of output 44 [2022-01-31 10:27:37,732 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 11 treesize of output 5 [2022-01-31 10:27:37,868 INFO L353 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2022-01-31 10:27:37,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 96 [2022-01-31 10:27:37,874 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2022-01-31 10:27:37,902 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-31 10:27:37,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 71 treesize of output 75 [2022-01-31 10:27:37,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 48 [2022-01-31 10:27:37,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-01-31 10:27:37,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:37,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 17 [2022-01-31 10:27:37,957 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 11 treesize of output 5 [2022-01-31 10:27:38,523 INFO L353 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-01-31 10:27:38,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 361 treesize of output 238 [2022-01-31 10:27:38,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,534 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 158 treesize of output 130 [2022-01-31 10:27:38,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 135 [2022-01-31 10:27:38,637 INFO L353 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-01-31 10:27:38,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 202 [2022-01-31 10:27:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,720 INFO L353 Elim1Store]: treesize reduction 209, result has 11.1 percent of original size [2022-01-31 10:27:38,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 108 treesize of output 169 [2022-01-31 10:27:38,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:38,778 INFO L353 Elim1Store]: treesize reduction 110, result has 22.0 percent of original size [2022-01-31 10:27:38,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 96 [2022-01-31 10:27:38,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:27:39,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 80 treesize of output 70 [2022-01-31 10:27:39,034 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 65 treesize of output 49 [2022-01-31 10:27:39,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 46 treesize of output 40 [2022-01-31 10:27:39,091 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 35 treesize of output 27 [2022-01-31 10:27:39,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 246 treesize of output 212 [2022-01-31 10:27:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:39,223 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 207 treesize of output 155 [2022-01-31 10:27:39,309 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 192 treesize of output 168 [2022-01-31 10:27:40,367 INFO L353 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-01-31 10:27:40,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 180 treesize of output 80 [2022-01-31 10:27:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:40,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:40,888 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (= (let ((.cse3 (* c_main_~index~0 4))) (let ((.cse0 (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_383) |c_main_~#array2~0.base|) (+ |c_main_~#array2~0.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_384) |c_main_~#array2~0.base|))) (+ (select .cse4 (+ (- 4) |c_main_~#array2~0.offset| .cse3)) (select .cse4 (+ |c_main_~#array2~0.offset| .cse3 4))))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse2 (select |c_#memory_int| |c_main_~#array1~0.base|))) (store .cse2 (+ .cse3 |c_main_~#array1~0.offset|) (+ (select .cse2 (+ (- 4) .cse3 |c_main_~#array1~0.offset|)) (select .cse2 (+ .cse3 |c_main_~#array1~0.offset| 4)))))) |c_main_~#array2~0.base| .cse0) |c_main_~#array1~0.base|))) (+ (select .cse0 (+ |c_main_~#array2~0.offset| 8)) (select .cse0 (+ |c_main_~#array2~0.offset| 12)) (select .cse1 (+ 12 |c_main_~#array1~0.offset|)) (select .cse1 |c_main_~#array1~0.offset|) (select .cse0 |c_main_~#array2~0.offset|) (select .cse0 (+ |c_main_~#array2~0.offset| 4)) (select .cse1 (+ 8 |c_main_~#array1~0.offset|)) (select .cse1 (+ |c_main_~#array1~0.offset| 4)) c_main_~sum~0)))) 0)) is different from false [2022-01-31 10:27:43,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146365737] [2022-01-31 10:27:43,103 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908517560] [2022-01-31 10:27:43,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908517560] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:27:43,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:27:43,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-01-31 10:27:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954585437] [2022-01-31 10:27:43,103 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:43,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 10:27:43,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 10:27:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=935, Unknown=3, NotChecked=62, Total=1122 [2022-01-31 10:27:43,105 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 21 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:43,750 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2022-01-31 10:27:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 10:27:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 21 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-01-31 10:27:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:43,751 INFO L225 Difference]: With dead ends: 104 [2022-01-31 10:27:43,752 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 10:27:43,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=142, Invalid=1119, Unknown=3, NotChecked=68, Total=1332 [2022-01-31 10:27:43,753 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:43,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 329 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 37 Unchecked, 0.5s Time] [2022-01-31 10:27:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 10:27:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2022-01-31 10:27:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 9 states have call successors, (9), 9 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:27:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2022-01-31 10:27:43,758 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 43 [2022-01-31 10:27:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:43,781 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2022-01-31 10:27:43,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 21 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:27:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2022-01-31 10:27:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 10:27:43,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:43,786 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:43,811 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 10:27:44,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:44,008 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:44,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash -961371017, now seen corresponding path program 6 times [2022-01-31 10:27:44,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:44,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035299495] [2022-01-31 10:27:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:44,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:44,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:44,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002325172] [2022-01-31 10:27:44,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:27:44,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:44,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:44,023 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 10:27:44,024 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 10:27:44,166 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-31 10:27:44,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:27:44,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 10:27:44,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:44,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:27:44,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:44,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035299495] [2022-01-31 10:27:44,411 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002325172] [2022-01-31 10:27:44,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002325172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:27:44,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:27:44,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-01-31 10:27:44,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805297414] [2022-01-31 10:27:44,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:44,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:27:44,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:27:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:27:44,413 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 10:27:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:44,633 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2022-01-31 10:27:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 10:27:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 45 [2022-01-31 10:27:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:44,635 INFO L225 Difference]: With dead ends: 134 [2022-01-31 10:27:44,635 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 10:27:44,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2022-01-31 10:27:44,636 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 84 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:44,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 130 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 10:27:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 103. [2022-01-31 10:27:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 84 states have internal predecessors, (93), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 10:27:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2022-01-31 10:27:44,649 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 45 [2022-01-31 10:27:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:44,650 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2022-01-31 10:27:44,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 10:27:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2022-01-31 10:27:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 10:27:44,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:44,652 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:44,681 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 10:27:44,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:44,879 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash -864921516, now seen corresponding path program 7 times [2022-01-31 10:27:44,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:44,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187320126] [2022-01-31 10:27:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:44,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:44,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:44,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338452007] [2022-01-31 10:27:44,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 10:27:44,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:44,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:44,891 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 10:27:44,893 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 10:27:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:44,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 10:27:44,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:45,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:27:45,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:45,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187320126] [2022-01-31 10:27:45,224 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:45,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338452007] [2022-01-31 10:27:45,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338452007] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:27:45,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:27:45,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-01-31 10:27:45,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37628489] [2022-01-31 10:27:45,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:45,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:27:45,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:27:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:27:45,226 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 10:27:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:45,460 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2022-01-31 10:27:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 10:27:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 45 [2022-01-31 10:27:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:45,461 INFO L225 Difference]: With dead ends: 121 [2022-01-31 10:27:45,461 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 10:27:45,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-01-31 10:27:45,462 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 43 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:45,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 295 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:27:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 10:27:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2022-01-31 10:27:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 79 states have internal predecessors, (87), 9 states have call successors, (9), 9 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:27:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2022-01-31 10:27:45,468 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 45 [2022-01-31 10:27:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:45,469 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2022-01-31 10:27:45,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 10:27:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2022-01-31 10:27:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:27:45,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:45,469 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:45,497 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 10:27:45,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:45,670 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1800830885, now seen corresponding path program 1 times [2022-01-31 10:27:45,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:45,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779163797] [2022-01-31 10:27:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:45,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:45,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:45,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865644936] [2022-01-31 10:27:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:45,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:45,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:45,681 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 10:27:45,682 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 10:27:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:27:45,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 94 conjunts are in the unsatisfiable core [2022-01-31 10:27:45,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:45,898 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 10 treesize of output 8 [2022-01-31 10:27:45,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:45,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-31 10:27:45,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 34 treesize of output 34 [2022-01-31 10:27:45,929 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 14 treesize of output 13 [2022-01-31 10:27:45,933 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 10:27:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-01-31 10:27:46,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:46,099 INFO L353 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2022-01-31 10:27:46,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 128 treesize of output 76 [2022-01-31 10:27:46,667 INFO L353 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2022-01-31 10:27:46,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 297 treesize of output 232 [2022-01-31 10:27:46,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,677 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 158 treesize of output 130 [2022-01-31 10:27:46,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 135 [2022-01-31 10:27:46,734 INFO L353 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-01-31 10:27:46,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 219 treesize of output 217 [2022-01-31 10:27:46,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:46,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:46,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 127 [2022-01-31 10:27:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 32 treesize of output 37 [2022-01-31 10:27:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2022-01-31 10:27:46,809 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 17 treesize of output 11 [2022-01-31 10:27:46,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 117 treesize of output 107 [2022-01-31 10:27:46,829 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 102 treesize of output 78 [2022-01-31 10:27:46,843 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-31 10:27:46,843 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 93 treesize of output 83 [2022-01-31 10:27:46,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:46,848 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 78 treesize of output 50 [2022-01-31 10:27:47,423 INFO L353 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-01-31 10:27:47,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 368 treesize of output 245 [2022-01-31 10:27:47,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,432 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 158 treesize of output 130 [2022-01-31 10:27:47,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 135 [2022-01-31 10:27:47,473 INFO L353 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-01-31 10:27:47,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 223 [2022-01-31 10:27:47,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:47,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:47,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 65 [2022-01-31 10:27:47,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:47,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:47,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 107 [2022-01-31 10:27:47,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:27:47,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 35 [2022-01-31 10:27:47,578 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 23 [2022-01-31 10:27:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2022-01-31 10:27:47,608 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 17 treesize of output 11 [2022-01-31 10:27:47,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-01-31 10:27:47,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:47,640 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 39 treesize of output 25 [2022-01-31 10:27:48,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:48,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:48,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:48,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:48,261 INFO L353 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-01-31 10:27:48,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 143 treesize of output 47 [2022-01-31 10:27:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:48,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:27:48,692 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_659 (Array Int Int)) (v_ArrVal_653 (Array Int Int))) (= (let ((.cse3 (* c_main_~index~0 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_659) |c_main_~#array2~0.base|) (+ |c_main_~#array2~0.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_653) |c_main_~#array2~0.base|))) (+ (select .cse4 (+ |c_main_~#array2~0.offset| .cse3 4)) (select .cse4 (+ (- 4) |c_main_~#array2~0.offset| .cse3))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse2 (select |c_#memory_int| |c_main_~#array1~0.base|))) (store .cse2 (+ .cse3 |c_main_~#array1~0.offset|) (+ (select .cse2 (+ (- 4) .cse3 |c_main_~#array1~0.offset|)) (select .cse2 (+ .cse3 |c_main_~#array1~0.offset| 4)))))) |c_main_~#array2~0.base| .cse1) |c_main_~#array1~0.base|))) (+ (select .cse0 (+ 8 |c_main_~#array1~0.offset|)) (select .cse0 (+ |c_main_~#array1~0.offset| 4)) (select .cse1 (+ |c_main_~#array2~0.offset| 8)) (select .cse1 |c_main_~#array2~0.offset|) (select .cse0 |c_main_~#array1~0.offset|) (select .cse1 (+ |c_main_~#array2~0.offset| 4)) c_main_~sum~0)))) 0)) is different from false [2022-01-31 10:27:53,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:27:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779163797] [2022-01-31 10:27:53,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:27:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865644936] [2022-01-31 10:27:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865644936] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:27:53,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:27:53,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-01-31 10:27:53,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617668773] [2022-01-31 10:27:53,023 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:27:53,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 10:27:53,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:27:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 10:27:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=937, Unknown=6, NotChecked=62, Total=1122 [2022-01-31 10:27:53,024 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 21 states have internal predecessors, (37), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:27:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:27:53,082 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2022-01-31 10:27:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 10:27:53,083 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 21 states have internal predecessors, (37), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-01-31 10:27:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:27:53,083 INFO L225 Difference]: With dead ends: 117 [2022-01-31 10:27:53,084 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 10:27:53,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=121, Invalid=999, Unknown=6, NotChecked=64, Total=1190 [2022-01-31 10:27:53,085 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:27:53,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 335 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 125 Unchecked, 0.0s Time] [2022-01-31 10:27:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 10:27:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-01-31 10:27:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 85 states have internal predecessors, (93), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 10:27:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2022-01-31 10:27:53,090 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 47 [2022-01-31 10:27:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:27:53,090 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2022-01-31 10:27:53,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 21 states have internal predecessors, (37), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:27:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2022-01-31 10:27:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:27:53,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:27:53,091 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:27:53,113 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 10:27:53,307 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,SelfDestructingSolverStorable10 [2022-01-31 10:27:53,307 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:27:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:27:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1352352655, now seen corresponding path program 8 times [2022-01-31 10:27:53,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:27:53,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642329476] [2022-01-31 10:27:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:27:53,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:27:53,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:27:53,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317328338] [2022-01-31 10:27:53,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:27:53,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:27:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:27:53,327 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 10:27:53,332 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 10:27:53,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:27:53,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:27:53,601 WARN L261 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 118 conjunts are in the unsatisfiable core [2022-01-31 10:27:53,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:27:53,632 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 10 treesize of output 8 [2022-01-31 10:27:53,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-31 10:27:53,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 34 treesize of output 34 [2022-01-31 10:27:53,666 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 10:27:53,670 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 14 treesize of output 13 [2022-01-31 10:27:53,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 69 [2022-01-31 10:27:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:53,855 INFO L353 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2022-01-31 10:27:53,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 84 treesize of output 74 [2022-01-31 10:27:53,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:53,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:53,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:53,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:53,980 INFO L353 Elim1Store]: treesize reduction 48, result has 22.6 percent of original size [2022-01-31 10:27:53,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 117 treesize of output 113 [2022-01-31 10:27:54,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,146 INFO L353 Elim1Store]: treesize reduction 55, result has 16.7 percent of original size [2022-01-31 10:27:54,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 110 treesize of output 117 [2022-01-31 10:27:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:54,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:27:54,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:27:55,051 INFO L353 Elim1Store]: treesize reduction 934, result has 10.0 percent of original size [2022-01-31 10:27:55,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 19 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 98 case distinctions, treesize of input 194 treesize of output 235 [2022-01-31 10:27:56,735 INFO L353 Elim1Store]: treesize reduction 37, result has 9.8 percent of original size [2022-01-31 10:27:56,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 244 treesize of output 108 [2022-01-31 10:27:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:27:56,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:30:32,073 WARN L228 SmtUtils]: Spent 30.96s on a formula simplification. DAG size of input: 30 DAG size of output: 27 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:30:32,074 INFO L353 Elim1Store]: treesize reduction 21, result has 63.8 percent of original size [2022-01-31 10:30:32,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3390700 treesize of output 2172176 [2022-01-31 10:35:45,254 WARN L228 SmtUtils]: Spent 12.54s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:35:45,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:35:45,269 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 18505388 treesize of output 18361932 [2022-01-31 10:35:50,699 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:35:52,721 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:01,096 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:04,692 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:07,841 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| 16 (* main_~count~0 4)) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:09,898 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 16 (* main_~count~0 4)) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:11,954 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:17,565 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:19,682 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| 12) (+ (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:36:21,722 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 12) (+ (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:36:25,737 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 12) (+ |main_~#array1~0.offset| (* main_~count~0 4) 4)) [2022-01-31 10:36:27,788 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 8) (+ |main_~#array1~0.offset| 12)) [2022-01-31 10:36:29,844 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 8) (+ |main_~#array1~0.offset| 12)) [2022-01-31 10:36:31,873 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| 12) (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|)) [2022-01-31 10:36:33,896 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 12) (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|)) [2022-01-31 10:36:37,418 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 12) (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|)) [2022-01-31 10:36:39,496 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| 12) (+ |main_~#array1~0.offset| 16 (* main_~count~0 4))) [2022-01-31 10:36:41,534 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 12) (+ |main_~#array1~0.offset| 16 (* main_~count~0 4))) [2022-01-31 10:36:43,592 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ |main_~#array1~0.offset| 12)) [2022-01-31 10:36:45,627 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ |main_~#array1~0.offset| 12)) [2022-01-31 10:36:47,792 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#array1~0.offset| (+ (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:36:49,856 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |main_~#array1~0.offset| (+ (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:36:53,029 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |main_~#array1~0.offset| (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|)) [2022-01-31 10:36:55,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:36:55,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:36:55,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:36:59,941 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:37:05,425 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:37:14,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:37:18,635 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 8 |main_~#array2~0.offset|) (+ (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:37:23,789 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:37:32,583 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 8 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16 (* main_~count~0 4))) [2022-01-31 10:37:34,668 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 8 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16 (* main_~count~0 4))) [2022-01-31 10:37:36,708 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 8 |main_~#array2~0.offset|) (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:37:38,812 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 8 |main_~#array2~0.offset|) (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:37:40,886 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:37:42,996 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:37:45,233 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 8 |main_~#array2~0.offset|) (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|)) [2022-01-31 10:37:47,340 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 8 |main_~#array2~0.offset|) (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|)) [2022-01-31 10:37:49,401 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:37:51,475 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:37:53,699 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) |main_~#array2~0.offset|) [2022-01-31 10:37:55,772 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) |main_~#array2~0.offset|) [2022-01-31 10:37:57,836 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) |main_~#array2~0.offset|) [2022-01-31 10:37:59,909 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) |main_~#array2~0.offset|) [2022-01-31 10:38:01,992 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|) |main_~#array2~0.offset|) [2022-01-31 10:38:04,137 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|) |main_~#array2~0.offset|) [2022-01-31 10:38:06,183 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) |main_~#array2~0.offset|) [2022-01-31 10:38:07,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:38:08,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:38:08,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:38:20,169 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) (+ 16 |main_~#array2~0.offset|)) [2022-01-31 10:38:22,314 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16 (* main_~count~0 4))) [2022-01-31 10:38:24,435 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 16 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16 (* main_~count~0 4))) [2022-01-31 10:38:26,520 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ 16 |main_~#array2~0.offset|)) [2022-01-31 10:38:34,649 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:38:36,743 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 4) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:38:38,807 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 4) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:38:49,469 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:38:51,561 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:38:57,103 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:38:59,393 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| (* main_~count~0 4) 4)) [2022-01-31 10:39:01,490 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 16 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| (* main_~count~0 4) 4)) [2022-01-31 10:39:03,583 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 |main_~#array2~0.offset|) (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|)) [2022-01-31 10:39:05,739 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 16 |main_~#array2~0.offset|) (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|)) [2022-01-31 10:39:07,870 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 |main_~#array2~0.offset|) (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:39:12,001 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:39:15,727 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|) (+ 12 |main_~#array2~0.offset|)) [2022-01-31 10:39:23,336 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) |main_~#array2~0.offset|) [2022-01-31 10:39:32,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:40,144 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:39:42,178 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:39:44,279 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:39:46,315 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:39:48,404 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| 16) (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|)) [2022-01-31 10:39:50,523 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 16) (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|)) [2022-01-31 10:39:52,638 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* main_~count~0 4) 12 |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:39:57,526 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:40:02,104 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 16)) [2022-01-31 10:40:06,012 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) (+ 4 |main_~#array2~0.offset|)) [2022-01-31 10:40:08,048 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) (+ 4 |main_~#array2~0.offset|)) [2022-01-31 10:40:11,824 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 4) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:13,856 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 4) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:15,943 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:18,037 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 16 (* main_~count~0 4) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:21,855 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:23,907 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ (* 4 |main_#t~nondet6|) |main_~#array2~0.offset|) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:27,757 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:29,850 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 12) (+ |main_~#array1~0.offset| 4)) [2022-01-31 10:40:33,748 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 8) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:40:35,889 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* main_~count~0 4) 8) (+ 8 |main_~#array2~0.offset|)) [2022-01-31 10:41:00,759 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| 16 (* main_~count~0 4)) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:41:02,874 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:41:05,096 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|)) (+ |main_~#array1~0.offset| 8)) [2022-01-31 10:41:19,107 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (+ 16 |main_~#array2~0.offset|) (+ (* main_~count~0 4) 8 |main_~#array2~0.offset|)) [2022-01-31 10:41:24,645 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|) (- 4)) (+ (* main_~count~0 4) |main_~#array2~0.offset|)) [2022-01-31 10:41:27,613 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |main_~#array1~0.offset| (* 4 |main_#t~nondet6|) (- 4)) (+ (* main_~count~0 4) 4 |main_~#array2~0.offset|))