/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/array8_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:31:45,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:31:45,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:31:45,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:31:45,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:31:45,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:31:45,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:31:45,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:31:45,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:31:45,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:31:45,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:31:45,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:31:45,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:31:45,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:31:45,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:31:45,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:31:45,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:31:45,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:31:45,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:31:45,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:31:45,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:31:45,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:31:45,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:31:45,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:31:45,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:31:45,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:31:45,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:31:45,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:31:45,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:31:45,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:31:45,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:31:45,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:31:45,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:31:45,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:31:45,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:31:45,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:31:45,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:31:45,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:31:45,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:31:45,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:31:45,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:31:45,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:31:45,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:31:45,750 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:31:45,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:31:45,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:31:45,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:31:45,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:31:45,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:31:45,971 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:31:45,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array8_pattern.c [2022-01-31 10:31:46,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b47d2d7/402c28b035ea4c2d9b1637396533f738/FLAG6097bcc84 [2022-01-31 10:31:46,325 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:31:46,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array8_pattern.c [2022-01-31 10:31:46,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b47d2d7/402c28b035ea4c2d9b1637396533f738/FLAG6097bcc84 [2022-01-31 10:31:46,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b47d2d7/402c28b035ea4c2d9b1637396533f738 [2022-01-31 10:31:46,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:31:46,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:31:46,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:31:46,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:31:46,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:31:46,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:46,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e426745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46, skipping insertion in model container [2022-01-31 10:31:46,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:46,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:31:46,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:31:46,892 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/array8_pattern.c[1321,1334] [2022-01-31 10:31:46,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:31:46,917 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:31:46,934 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/array8_pattern.c[1321,1334] [2022-01-31 10:31:46,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:31:46,950 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:31:46,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46 WrapperNode [2022-01-31 10:31:46,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:31:46,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:31:46,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:31:46,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:31:46,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:46,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:46,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:46,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:46,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:47,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:47,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:47,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:31:47,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:31:47,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:31:47,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:31:47,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (1/1) ... [2022-01-31 10:31:47,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:31:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:31:47,039 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 10:31:47,048 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 10:31:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:31:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:31:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:31:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:31:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:31:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:31:47,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:31:47,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:31:47,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:31:47,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:31:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:31:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:31:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:31:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:31:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:31:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:31:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:31:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:31:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:31:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:31:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:31:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:31:47,156 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:31:47,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:31:47,346 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:31:47,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:31:47,351 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 10:31:47,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:31:47 BoogieIcfgContainer [2022-01-31 10:31:47,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:31:47,353 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:31:47,353 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:31:47,356 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:31:47,358 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:31:47" (1/1) ... [2022-01-31 10:31:47,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:31:47 BasicIcfg [2022-01-31 10:31:47,383 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:31:47,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:31:47,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:31:47,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:31:47,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:31:46" (1/4) ... [2022-01-31 10:31:47,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38195de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:31:47, skipping insertion in model container [2022-01-31 10:31:47,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:31:46" (2/4) ... [2022-01-31 10:31:47,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38195de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:31:47, skipping insertion in model container [2022-01-31 10:31:47,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:31:47" (3/4) ... [2022-01-31 10:31:47,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38195de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:31:47, skipping insertion in model container [2022-01-31 10:31:47,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:31:47" (4/4) ... [2022-01-31 10:31:47,390 INFO L111 eAbstractionObserver]: Analyzing ICFG array8_pattern.cJordan [2022-01-31 10:31:47,394 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:31:47,394 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:31:47,432 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:31:47,438 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 10:31:47,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:31:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 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 10:31:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 10:31:47,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:31:47,462 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, 1] [2022-01-31 10:31:47,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:31:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:31:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1577137784, now seen corresponding path program 1 times [2022-01-31 10:31:47,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:31:47,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136827100] [2022-01-31 10:31:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:47,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:31:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:31:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:31:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:31:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:31:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:31:47,609 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 10:31:47,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:31:47,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136827100] [2022-01-31 10:31:47,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136827100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:31:47,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:31:47,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:31:47,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932670816] [2022-01-31 10:31:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:31:47,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:31:47,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:31:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:31:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:31:47,634 INFO L87 Difference]: Start difference. First operand has 36 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 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 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 10:31:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:31:47,695 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-01-31 10:31:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:31:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 21 [2022-01-31 10:31:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:31:47,701 INFO L225 Difference]: With dead ends: 36 [2022-01-31 10:31:47,702 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 10:31:47,703 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 10:31:47,707 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:31:47,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:31:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 10:31:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 10:31:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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 10:31:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 10:31:47,743 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2022-01-31 10:31:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:31:47,744 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 10:31:47,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 10:31:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 10:31:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 10:31:47,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:31:47,746 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] [2022-01-31 10:31:47,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:31:47,747 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:31:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:31:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash -271724733, now seen corresponding path program 1 times [2022-01-31 10:31:47,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:31:47,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184428866] [2022-01-31 10:31:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:47,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:31:47,800 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:31:47,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528299932] [2022-01-31 10:31:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:47,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:31:47,803 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 10:31:47,804 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 10:31:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:31:47,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:31:47,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:31:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:31:48,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:31:48,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:31:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184428866] [2022-01-31 10:31:48,021 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:31:48,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528299932] [2022-01-31 10:31:48,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528299932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:31:48,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:31:48,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:31:48,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694655729] [2022-01-31 10:31:48,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:31:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:31:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:31:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:31:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:31:48,030 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:31:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:31:48,088 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-01-31 10:31:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 10:31:48,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-01-31 10:31:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:31:48,089 INFO L225 Difference]: With dead ends: 37 [2022-01-31 10:31:48,089 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 10:31:48,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:31:48,091 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:31:48,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 80 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:31:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 10:31:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-01-31 10:31:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 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 10:31:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-01-31 10:31:48,095 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2022-01-31 10:31:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:31:48,095 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-01-31 10:31:48,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 10:31:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-01-31 10:31:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 10:31:48,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:31:48,096 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, 1, 1, 1] [2022-01-31 10:31:48,117 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 10:31:48,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:48,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:31:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:31:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash 456737219, now seen corresponding path program 1 times [2022-01-31 10:31:48,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:31:48,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120825008] [2022-01-31 10:31:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:48,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:31:48,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:31:48,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015941194] [2022-01-31 10:31:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:48,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:31:48,319 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 10:31:48,320 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 10:31:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:31:48,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-31 10:31:48,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:31:48,455 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 10:31:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:48,500 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 18 treesize of output 18 [2022-01-31 10:31:48,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:31:48,829 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 23 treesize of output 22 [2022-01-31 10:31:48,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:31:48,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-01-31 10:31:49,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:31:49,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2022-01-31 10:31:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:31:49,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:31:49,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:31:49,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120825008] [2022-01-31 10:31:49,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:31:49,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015941194] [2022-01-31 10:31:49,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015941194] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:31:49,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:31:49,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-01-31 10:31:49,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67466751] [2022-01-31 10:31:49,517 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:31:49,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:31:49,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:31:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:31:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-01-31 10:31:49,518 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 15 states have internal predecessors, (26), 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 10:31:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:31:49,760 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2022-01-31 10:31:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 10:31:49,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 15 states have internal predecessors, (26), 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 34 [2022-01-31 10:31:49,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:31:49,762 INFO L225 Difference]: With dead ends: 58 [2022-01-31 10:31:49,762 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 10:31:49,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2022-01-31 10:31:49,763 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:31:49,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 280 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 121 Invalid, 0 Unknown, 96 Unchecked, 0.1s Time] [2022-01-31 10:31:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 10:31:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-01-31 10:31:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 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 10:31:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-01-31 10:31:49,768 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 34 [2022-01-31 10:31:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:31:49,768 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-01-31 10:31:49,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 15 states have internal predecessors, (26), 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 10:31:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-01-31 10:31:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 10:31:49,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:31:49,769 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:31:49,791 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 10:31:49,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 10:31:49,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:31:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:31:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1746308063, now seen corresponding path program 2 times [2022-01-31 10:31:49,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:31:49,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473476088] [2022-01-31 10:31:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:49,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:31:49,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:31:49,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256518939] [2022-01-31 10:31:49,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:31:49,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:31:49,999 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 10:31:50,000 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 10:31:50,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:31:50,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:31:50,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:31:50,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:31:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:31:50,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:31:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:31:50,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:31:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473476088] [2022-01-31 10:31:50,171 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:31:50,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256518939] [2022-01-31 10:31:50,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256518939] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:31:50,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:31:50,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:31:50,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611684005] [2022-01-31 10:31:50,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:31:50,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:31:50,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:31:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:31:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:31:50,173 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 10:31:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:31:50,269 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-01-31 10:31:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 10:31:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 36 [2022-01-31 10:31:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:31:50,270 INFO L225 Difference]: With dead ends: 61 [2022-01-31 10:31:50,270 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 10:31:50,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:31:50,271 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:31:50,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 124 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:31:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 10:31:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-01-31 10:31:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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 10:31:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-01-31 10:31:50,275 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 36 [2022-01-31 10:31:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:31:50,275 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-01-31 10:31:50,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 10:31:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-01-31 10:31:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 10:31:50,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:31:50,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:31:50,292 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 10:31:50,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:50,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:31:50,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:31:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1542734119, now seen corresponding path program 3 times [2022-01-31 10:31:50,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:31:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657143767] [2022-01-31 10:31:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:50,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:31:50,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:31:50,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58109445] [2022-01-31 10:31:50,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:31:50,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:31:50,520 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 10:31:50,521 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 10:31:50,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-31 10:31:50,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:31:50,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:31:50,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:31:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:31:50,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:31:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:31:50,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:31:50,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657143767] [2022-01-31 10:31:50,732 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:31:50,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58109445] [2022-01-31 10:31:50,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58109445] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:31:50,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:31:50,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:31:50,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419783549] [2022-01-31 10:31:50,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:31:50,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:31:50,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:31:50,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:31:50,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:31:50,733 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 10:31:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:31:50,799 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-01-31 10:31:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 10:31:50,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 36 [2022-01-31 10:31:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:31:50,803 INFO L225 Difference]: With dead ends: 40 [2022-01-31 10:31:50,803 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 10:31:50,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-31 10:31:50,804 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:31:50,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 75 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:31:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 10:31:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 10:31:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 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 10:31:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-01-31 10:31:50,806 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 36 [2022-01-31 10:31:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:31:50,807 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-01-31 10:31:50,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 10:31:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-01-31 10:31:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 10:31:50,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:31:50,807 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:31:50,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 10:31:51,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:51,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:31:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:31:51,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1712276035, now seen corresponding path program 4 times [2022-01-31 10:31:51,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:31:51,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564238367] [2022-01-31 10:31:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:31:51,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:31:51,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:31:51,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918541641] [2022-01-31 10:31:51,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:31:51,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:31:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:31:51,040 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 10:31:51,041 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 10:31:51,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:31:51,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:31:51,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-31 10:31:51,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:31:51,139 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 10:31:51,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:51,156 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 18 treesize of output 18 [2022-01-31 10:31:51,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:31:51,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:51,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-01-31 10:31:51,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:51,705 INFO L353 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-01-31 10:31:51,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-01-31 10:31:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:51,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:31:51,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:51,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2022-01-31 10:31:53,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:31:53,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:53,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:31:53,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:31:53,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 20 [2022-01-31 10:31:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:31:54,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:03,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:03,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564238367] [2022-01-31 10:32:03,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:03,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918541641] [2022-01-31 10:32:03,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918541641] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:32:03,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:32:03,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-01-31 10:32:03,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953602771] [2022-01-31 10:32:03,799 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:03,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 10:32:03,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 10:32:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=994, Unknown=8, NotChecked=0, Total=1190 [2022-01-31 10:32:03,801 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 21 states have internal predecessors, (30), 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 10:32:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:04,043 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2022-01-31 10:32:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 10:32:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 21 states have internal predecessors, (30), 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 38 [2022-01-31 10:32:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:04,045 INFO L225 Difference]: With dead ends: 64 [2022-01-31 10:32:04,045 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 10:32:04,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=225, Invalid=1173, Unknown=8, NotChecked=0, Total=1406 [2022-01-31 10:32:04,047 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:04,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 291 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 115 Unchecked, 0.1s Time] [2022-01-31 10:32:04,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 10:32:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2022-01-31 10:32:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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 10:32:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2022-01-31 10:32:04,052 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 38 [2022-01-31 10:32:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:04,052 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2022-01-31 10:32:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 21 states have internal predecessors, (30), 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 10:32:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2022-01-31 10:32:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 10:32:04,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:04,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:32:04,075 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 10:32:04,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:04,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1418873028, now seen corresponding path program 1 times [2022-01-31 10:32:04,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:04,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613543459] [2022-01-31 10:32:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:04,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:04,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:04,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081582798] [2022-01-31 10:32:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:04,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:04,289 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 10:32:04,290 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 10:32:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:32:04,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-31 10:32:04,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:04,376 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 10:32:04,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:04,405 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-01-31 10:32:04,409 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 28 treesize of output 28 [2022-01-31 10:32:04,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:04,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:04,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:04,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 54 treesize of output 43 [2022-01-31 10:32:05,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:05,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:05,062 INFO L353 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-01-31 10:32:05,062 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 2 case distinctions, treesize of input 48 treesize of output 68 [2022-01-31 10:32:05,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:05,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:05,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:32:05,280 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 0 case distinctions, treesize of input 56 treesize of output 55 [2022-01-31 10:32:05,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:05,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:32:05,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 22 [2022-01-31 10:32:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:32:05,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:20,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:20,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613543459] [2022-01-31 10:32:20,313 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081582798] [2022-01-31 10:32:20,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081582798] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:32:20,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:32:20,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-01-31 10:32:20,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221425892] [2022-01-31 10:32:20,313 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:20,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 10:32:20,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:20,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 10:32:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=780, Unknown=3, NotChecked=0, Total=930 [2022-01-31 10:32:20,314 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 19 states have internal predecessors, (30), 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 10:32:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:20,728 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2022-01-31 10:32:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 10:32:20,728 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 19 states have internal predecessors, (30), 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 38 [2022-01-31 10:32:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:20,729 INFO L225 Difference]: With dead ends: 77 [2022-01-31 10:32:20,729 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 10:32:20,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=200, Invalid=1057, Unknown=3, NotChecked=0, Total=1260 [2022-01-31 10:32:20,730 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:20,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 369 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 209 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2022-01-31 10:32:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 10:32:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2022-01-31 10:32:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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 10:32:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2022-01-31 10:32:20,734 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 38 [2022-01-31 10:32:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:20,734 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2022-01-31 10:32:20,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 19 states have internal predecessors, (30), 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 10:32:20,734 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2022-01-31 10:32:20,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 10:32:20,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:20,735 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:32:20,754 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 10:32:20,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:20,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1433300063, now seen corresponding path program 5 times [2022-01-31 10:32:20,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:20,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078410058] [2022-01-31 10:32:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:20,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:20,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:20,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575344115] [2022-01-31 10:32:20,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:32:20,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:20,965 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 10:32:20,969 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 10:32:21,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-31 10:32:21,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:32:21,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:32:21,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:32:21,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:32:21,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:21,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078410058] [2022-01-31 10:32:21,214 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:21,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575344115] [2022-01-31 10:32:21,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575344115] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:32:21,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:32:21,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:32:21,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277169194] [2022-01-31 10:32:21,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:21,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:32:21,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:32:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:32:21,215 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 10:32:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:21,304 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2022-01-31 10:32:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 10:32:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 10:32:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:21,305 INFO L225 Difference]: With dead ends: 84 [2022-01-31 10:32:21,305 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 10:32:21,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-31 10:32:21,305 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 77 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:21,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 100 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:32:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 10:32:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2022-01-31 10:32:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:32:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2022-01-31 10:32:21,310 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 40 [2022-01-31 10:32:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:21,310 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2022-01-31 10:32:21,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 10:32:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2022-01-31 10:32:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 10:32:21,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:21,310 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:32:21,329 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 10:32:21,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:21,520 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -927731801, now seen corresponding path program 6 times [2022-01-31 10:32:21,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:21,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762049986] [2022-01-31 10:32:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:21,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:21,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:21,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258532908] [2022-01-31 10:32:21,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:32:21,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:21,534 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 10:32:21,535 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 10:32:21,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-31 10:32:21,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:32:21,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:32:21,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:32:21,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:32:21,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762049986] [2022-01-31 10:32:21,784 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:21,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258532908] [2022-01-31 10:32:21,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258532908] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:32:21,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:32:21,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 10:32:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521118729] [2022-01-31 10:32:21,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:21,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 10:32:21,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 10:32:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:32:21,788 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 10:32:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:21,935 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-01-31 10:32:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:32:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 10:32:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:21,936 INFO L225 Difference]: With dead ends: 76 [2022-01-31 10:32:21,937 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 10:32:21,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:32:21,937 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:21,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 193 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:32:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 10:32:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2022-01-31 10:32:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 10:32:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2022-01-31 10:32:21,941 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 40 [2022-01-31 10:32:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:21,941 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2022-01-31 10:32:21,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 10:32:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2022-01-31 10:32:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 10:32:21,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:21,942 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, 1, 1, 1] [2022-01-31 10:32:21,962 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 10:32:22,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 10:32:22,154 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1583525693, now seen corresponding path program 7 times [2022-01-31 10:32:22,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:22,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129176271] [2022-01-31 10:32:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:22,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:22,166 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477574332] [2022-01-31 10:32:22,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 10:32:22,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:22,170 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 10:32:22,171 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 10:32:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:32:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-31 10:32:22,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:22,321 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 10:32:22,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,351 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 27 treesize of output 31 [2022-01-31 10:32:22,354 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 28 treesize of output 28 [2022-01-31 10:32:22,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:22,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 64 treesize of output 53 [2022-01-31 10:32:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2022-01-31 10:32:22,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,031 INFO L353 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-01-31 10:32:23,032 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 3 case distinctions, treesize of input 66 treesize of output 98 [2022-01-31 10:32:23,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:23,276 INFO L353 Elim1Store]: treesize reduction 164, result has 13.7 percent of original size [2022-01-31 10:32:23,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 112 [2022-01-31 10:32:24,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 49 [2022-01-31 10:32:24,121 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 10:32:24,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:26,558 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~index~0 Int) (v_ArrVal_421 Int)) (or (<= (let ((.cse0 (store (select |c_#memory_int| |c_main_~#array1~0.base|) (+ (* main_~index~0 4) |c_main_~#array1~0.offset|) v_ArrVal_421))) (let ((.cse1 (select (store |c_#memory_int| |c_main_~#array1~0.base| .cse0) |c_main_~#array2~0.base|))) (+ (select .cse0 (+ 8 |c_main_~#array1~0.offset|)) (select .cse1 |c_main_~#array2~0.offset|) (select .cse1 (+ |c_main_~#array2~0.offset| 4)) (select .cse1 (+ |c_main_~#array2~0.offset| 8)) (select .cse0 (+ |c_main_~#array1~0.offset| 4)) (select .cse0 |c_main_~#array1~0.offset|) c_main_~sum~0))) (div (+ c_~ARR_SIZE~0 1) 2)) (not (<= v_ArrVal_421 (* c_main_~count~0 c_main_~num~0 c_main_~num~0))))) is different from false [2022-01-31 10:32:26,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129176271] [2022-01-31 10:32:26,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477574332] [2022-01-31 10:32:26,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477574332] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:32:26,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:32:26,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-01-31 10:32:26,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333750916] [2022-01-31 10:32:26,577 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:26,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 10:32:26,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 10:32:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=698, Unknown=1, NotChecked=54, Total=870 [2022-01-31 10:32:26,578 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 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 10:32:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:27,178 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-01-31 10:32:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 10:32:27,187 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 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 42 [2022-01-31 10:32:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:27,189 INFO L225 Difference]: With dead ends: 96 [2022-01-31 10:32:27,189 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 10:32:27,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=158, Invalid=901, Unknown=1, NotChecked=62, Total=1122 [2022-01-31 10:32:27,190 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:27,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 289 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 364 Invalid, 0 Unknown, 31 Unchecked, 0.4s Time] [2022-01-31 10:32:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 10:32:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-01-31 10:32:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 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 10:32:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2022-01-31 10:32:27,208 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 42 [2022-01-31 10:32:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:27,208 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2022-01-31 10:32:27,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 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 10:32:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2022-01-31 10:32:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 10:32:27,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:27,209 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, 1, 1, 1] [2022-01-31 10:32:27,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 10:32:27,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 10:32:27,428 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -75973884, now seen corresponding path program 2 times [2022-01-31 10:32:27,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:27,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377657850] [2022-01-31 10:32:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:27,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:27,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:27,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546089425] [2022-01-31 10:32:27,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:32:27,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:27,448 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:32:27,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 10:32:27,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:32:27,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:32:27,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-31 10:32:27,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:27,577 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 10:32:27,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,605 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 27 treesize of output 31 [2022-01-31 10:32:27,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:27,616 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 27 treesize of output 26 [2022-01-31 10:32:27,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 54 treesize of output 43 [2022-01-31 10:32:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:27,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2022-01-31 10:32:28,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,359 INFO L353 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-01-31 10:32:28,359 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 3 case distinctions, treesize of input 66 treesize of output 98 [2022-01-31 10:32:28,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:28,590 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-31 10:32:28,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 120 [2022-01-31 10:32:30,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:30,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:32:30,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:30,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:30,170 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:32:30,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 74 [2022-01-31 10:32:30,630 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 10:32:30,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:33,861 WARN L838 $PredicateComparison]: unable to prove that (forall ((aux_div_main_~index~0_21 Int) (v_ArrVal_499 Int) (v_ArrVal_497 Int) (aux_mod_main_~index~0_21 Int)) (let ((.cse0 (+ (* 2 aux_div_main_~index~0_21) aux_mod_main_~index~0_21))) (or (< (* c_main_~count~0 c_main_~num~0) v_ArrVal_499) (< .cse0 0) (> 0 aux_mod_main_~index~0_21) (<= 3 .cse0) (>= aux_mod_main_~index~0_21 2) (= aux_mod_main_~index~0_21 0) (<= (let ((.cse4 (* aux_div_main_~index~0_21 8)) (.cse5 (* aux_mod_main_~index~0_21 4))) (let ((.cse3 (store |c_#memory_int| |c_main_~#array1~0.base| (store (select |c_#memory_int| |c_main_~#array1~0.base|) (+ .cse4 |c_main_~#array1~0.offset| .cse5) v_ArrVal_497)))) (let ((.cse2 (store (select .cse3 |c_main_~#array2~0.base|) (+ .cse4 |c_main_~#array2~0.offset| .cse5) v_ArrVal_499))) (let ((.cse1 (select (store .cse3 |c_main_~#array2~0.base| .cse2) |c_main_~#array1~0.base|))) (+ (select .cse1 (+ |c_main_~#array1~0.offset| 4)) (select .cse1 (+ 8 |c_main_~#array1~0.offset|)) (select .cse2 |c_main_~#array2~0.offset|) (select .cse2 (+ |c_main_~#array2~0.offset| 8)) (select .cse1 |c_main_~#array1~0.offset|) (select .cse2 (+ |c_main_~#array2~0.offset| 4)) c_main_~sum~0))))) 2) (not (<= v_ArrVal_497 (* c_main_~count~0 c_main_~num~0 c_main_~num~0)))))) is different from false [2022-01-31 10:32:33,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377657850] [2022-01-31 10:32:33,864 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546089425] [2022-01-31 10:32:33,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546089425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:32:33,864 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:32:33,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-01-31 10:32:33,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921055071] [2022-01-31 10:32:33,865 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:33,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 10:32:33,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 10:32:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1222, Unknown=1, NotChecked=72, Total=1482 [2022-01-31 10:32:33,866 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 23 states have internal predecessors, (34), 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 10:32:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:34,802 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2022-01-31 10:32:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 10:32:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 23 states have internal predecessors, (34), 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 42 [2022-01-31 10:32:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:34,803 INFO L225 Difference]: With dead ends: 104 [2022-01-31 10:32:34,803 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 10:32:34,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=312, Invalid=1947, Unknown=1, NotChecked=92, Total=2352 [2022-01-31 10:32:34,804 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:34,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 510 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 373 Invalid, 0 Unknown, 244 Unchecked, 0.3s Time] [2022-01-31 10:32:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 10:32:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2022-01-31 10:32:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 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 10:32:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2022-01-31 10:32:34,808 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 42 [2022-01-31 10:32:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:34,808 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2022-01-31 10:32:34,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 23 states have internal predecessors, (34), 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 10:32:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2022-01-31 10:32:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 10:32:34,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:34,808 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, 1, 1, 1] [2022-01-31 10:32:34,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 10:32:35,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 10:32:35,015 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -441263393, now seen corresponding path program 8 times [2022-01-31 10:32:35,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:35,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301628614] [2022-01-31 10:32:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:35,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:35,032 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:35,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826849948] [2022-01-31 10:32:35,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:32:35,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:35,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:35,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:32:35,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 10:32:35,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:32:35,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:32:35,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 10:32:35,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:35,229 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 10:32:35,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:32:35,325 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 10:32:35,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:32:35,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301628614] [2022-01-31 10:32:35,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:32:35,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826849948] [2022-01-31 10:32:35,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826849948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:32:35,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:32:35,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-31 10:32:35,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045971552] [2022-01-31 10:32:35,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:32:35,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 10:32:35,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:32:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 10:32:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:32:35,327 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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 10:32:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:32:35,508 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2022-01-31 10:32:35,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 10:32:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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 44 [2022-01-31 10:32:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:32:35,509 INFO L225 Difference]: With dead ends: 138 [2022-01-31 10:32:35,509 INFO L226 Difference]: Without dead ends: 130 [2022-01-31 10:32:35,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-01-31 10:32:35,509 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 120 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:32:35,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 211 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:32:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-31 10:32:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 109. [2022-01-31 10:32:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 90 states have internal predecessors, (104), 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 10:32:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2022-01-31 10:32:35,515 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 44 [2022-01-31 10:32:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:32:35,515 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2022-01-31 10:32:35,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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 10:32:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2022-01-31 10:32:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 10:32:35,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:32:35,516 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, 1, 1, 1] [2022-01-31 10:32:35,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 10:32:35,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 10:32:35,720 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:32:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:32:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -45028029, now seen corresponding path program 9 times [2022-01-31 10:32:35,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:32:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104769838] [2022-01-31 10:32:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:32:35,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:32:35,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:32:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666087903] [2022-01-31 10:32:35,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:32:35,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:32:35,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:32:35,740 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:32:35,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 10:32:35,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-31 10:32:35,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:32:35,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 83 conjunts are in the unsatisfiable core [2022-01-31 10:32:35,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:32:35,918 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 10:32:35,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:35,942 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 27 treesize of output 31 [2022-01-31 10:32:35,947 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 28 treesize of output 28 [2022-01-31 10:32:35,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:35,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:32:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,017 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 38 treesize of output 37 [2022-01-31 10:32:36,030 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 31 treesize of output 29 [2022-01-31 10:32:36,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,037 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 16 treesize of output 20 [2022-01-31 10:32:36,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,043 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 16 treesize of output 20 [2022-01-31 10:32:36,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,128 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 60 treesize of output 55 [2022-01-31 10:32:36,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,160 INFO L353 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-01-31 10:32:36,161 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 46 [2022-01-31 10:32:36,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,184 INFO L353 Elim1Store]: treesize reduction 68, result has 29.9 percent of original size [2022-01-31 10:32:36,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 94 [2022-01-31 10:32:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,339 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 92 treesize of output 83 [2022-01-31 10:32:36,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,382 INFO L353 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2022-01-31 10:32:36,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 69 [2022-01-31 10:32:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:36,421 INFO L353 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2022-01-31 10:32:36,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 95 treesize of output 124 [2022-01-31 10:32:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:46,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:46,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:46,098 INFO L353 Elim1Store]: treesize reduction 167, result has 39.7 percent of original size [2022-01-31 10:32:46,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 105 treesize of output 195 [2022-01-31 10:32:52,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:52,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:52,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:52,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:52,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:32:52,220 INFO L353 Elim1Store]: treesize reduction 237, result has 27.7 percent of original size [2022-01-31 10:32:52,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 7 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 151 treesize of output 226 [2022-01-31 10:33:21,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:21,770 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:33:21,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 15 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 196 [2022-01-31 10:33:24,162 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 10:33:24,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:33:36,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:33:36,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104769838] [2022-01-31 10:33:36,849 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:33:36,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666087903] [2022-01-31 10:33:36,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666087903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:33:36,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:33:36,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-01-31 10:33:36,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416445137] [2022-01-31 10:33:36,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:33:36,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 10:33:36,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:33:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 10:33:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2004, Unknown=20, NotChecked=0, Total=2256 [2022-01-31 10:33:36,851 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 28 states have internal predecessors, (38), 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 10:33:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:33:43,148 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2022-01-31 10:33:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 10:33:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 28 states have internal predecessors, (38), 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 46 [2022-01-31 10:33:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:33:43,150 INFO L225 Difference]: With dead ends: 145 [2022-01-31 10:33:43,150 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 10:33:43,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=281, Invalid=2665, Unknown=24, NotChecked=0, Total=2970 [2022-01-31 10:33:43,152 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:33:43,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 559 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 317 Unchecked, 0.1s Time] [2022-01-31 10:33:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 10:33:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2022-01-31 10:33:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 104 states have internal predecessors, (121), 11 states have call successors, (11), 11 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 10:33:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 141 transitions. [2022-01-31 10:33:43,156 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 141 transitions. Word has length 46 [2022-01-31 10:33:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:33:43,156 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 141 transitions. [2022-01-31 10:33:43,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 28 states have internal predecessors, (38), 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 10:33:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2022-01-31 10:33:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 10:33:43,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:33:43,157 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, 1, 1, 1] [2022-01-31 10:33:43,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 10:33:43,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 10:33:43,364 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:33:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:33:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1308281668, now seen corresponding path program 3 times [2022-01-31 10:33:43,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:33:43,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288496291] [2022-01-31 10:33:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:33:43,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:33:43,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:33:43,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018967191] [2022-01-31 10:33:43,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:33:43,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:33:43,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:33:43,388 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:33:43,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-31 10:33:43,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-31 10:33:43,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:33:43,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 81 conjunts are in the unsatisfiable core [2022-01-31 10:33:43,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:33:43,538 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 10:33:43,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,563 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 27 treesize of output 31 [2022-01-31 10:33:43,566 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 28 treesize of output 28 [2022-01-31 10:33:43,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:33:43,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:33:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,636 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 38 treesize of output 37 [2022-01-31 10:33:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,640 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 16 treesize of output 20 [2022-01-31 10:33:43,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,644 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 37 treesize of output 42 [2022-01-31 10:33:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,706 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 60 treesize of output 55 [2022-01-31 10:33:43,713 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 44 treesize of output 40 [2022-01-31 10:33:43,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,737 INFO L353 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-01-31 10:33:43,737 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 46 [2022-01-31 10:33:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,759 INFO L353 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-01-31 10:33:43,759 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 40 [2022-01-31 10:33:43,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,907 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 92 treesize of output 83 [2022-01-31 10:33:43,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,945 INFO L353 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2022-01-31 10:33:43,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 61 [2022-01-31 10:33:43,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:43,985 INFO L353 Elim1Store]: treesize reduction 130, result has 15.0 percent of original size [2022-01-31 10:33:43,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 103 treesize of output 126 [2022-01-31 10:33:49,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:49,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:49,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:49,480 INFO L353 Elim1Store]: treesize reduction 177, result has 36.1 percent of original size [2022-01-31 10:33:49,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 106 treesize of output 186 [2022-01-31 10:33:55,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:33:55,939 INFO L353 Elim1Store]: treesize reduction 218, result has 26.4 percent of original size [2022-01-31 10:33:55,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 171 treesize of output 231 [2022-01-31 10:38:26,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:38:26,195 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:38:26,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 14 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 16 case distinctions, treesize of input 226 treesize of output 360 [2022-01-31 10:38:31,870 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 10:38:31,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:39:15,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:39:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288496291] [2022-01-31 10:39:15,760 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:39:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018967191] [2022-01-31 10:39:15,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018967191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:39:15,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:39:15,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-01-31 10:39:15,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131040500] [2022-01-31 10:39:15,760 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:39:15,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 10:39:15,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:39:15,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 10:39:15,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1820, Unknown=18, NotChecked=0, Total=2070 [2022-01-31 10:39:15,761 INFO L87 Difference]: Start difference. First operand 125 states and 141 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 28 states have internal predecessors, (38), 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 10:39:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:39:19,805 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2022-01-31 10:39:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 10:39:19,805 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 28 states have internal predecessors, (38), 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 46 [2022-01-31 10:39:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:39:19,806 INFO L225 Difference]: With dead ends: 148 [2022-01-31 10:39:19,806 INFO L226 Difference]: Without dead ends: 145 [2022-01-31 10:39:19,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 53.5s TimeCoverageRelationStatistics Valid=314, Invalid=2637, Unknown=19, NotChecked=0, Total=2970 [2022-01-31 10:39:19,807 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:39:19,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 562 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 422 Unchecked, 0.3s Time] [2022-01-31 10:39:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-31 10:39:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-01-31 10:39:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 104 states have internal predecessors, (121), 11 states have call successors, (11), 11 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 10:39:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 141 transitions. [2022-01-31 10:39:19,810 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 141 transitions. Word has length 46 [2022-01-31 10:39:19,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:39:19,811 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 141 transitions. [2022-01-31 10:39:19,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 28 states have internal predecessors, (38), 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 10:39:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2022-01-31 10:39:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:39:19,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:39:19,811 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:39:19,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-31 10:39:20,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 10:39:20,020 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:39:20,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:39:20,020 INFO L85 PathProgramCache]: Analyzing trace with hash -316585203, now seen corresponding path program 1 times [2022-01-31 10:39:20,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:39:20,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536501939] [2022-01-31 10:39:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:39:20,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:39:20,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:39:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354708661] [2022-01-31 10:39:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:39:20,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:39:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:39:20,030 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:39:20,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-31 10:39:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:39:20,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-31 10:39:20,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:39:20,140 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 10:39:20,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:20,162 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 18 treesize of output 18 [2022-01-31 10:39:20,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:39:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:20,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-01-31 10:39:20,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:20,766 INFO L353 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-01-31 10:39:20,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 56 [2022-01-31 10:39:21,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:21,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:21,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:21,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 65 [2022-01-31 10:39:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:23,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:23,344 INFO L353 Elim1Store]: treesize reduction 69, result has 30.3 percent of original size [2022-01-31 10:39:23,345 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 2 case distinctions, treesize of input 73 treesize of output 76 [2022-01-31 10:39:24,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:24,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:24,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 59 [2022-01-31 10:39:25,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:25,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:25,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 20 [2022-01-31 10:39:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:39:25,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:39:39,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:39:39,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536501939] [2022-01-31 10:39:39,542 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:39:39,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354708661] [2022-01-31 10:39:39,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354708661] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:39:39,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:39:39,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-01-31 10:39:39,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469691777] [2022-01-31 10:39:39,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:39:39,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 10:39:39,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:39:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 10:39:39,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1202, Unknown=7, NotChecked=0, Total=1406 [2022-01-31 10:39:39,544 INFO L87 Difference]: Start difference. First operand 125 states and 141 transitions. Second operand has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 10:39:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:39:41,227 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2022-01-31 10:39:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 10:39:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 48 [2022-01-31 10:39:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:39:41,228 INFO L225 Difference]: With dead ends: 148 [2022-01-31 10:39:41,228 INFO L226 Difference]: Without dead ends: 139 [2022-01-31 10:39:41,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=257, Invalid=1541, Unknown=8, NotChecked=0, Total=1806 [2022-01-31 10:39:41,228 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:39:41,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 319 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 149 Invalid, 0 Unknown, 139 Unchecked, 0.3s Time] [2022-01-31 10:39:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-31 10:39:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2022-01-31 10:39:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 112 states have (on average 1.1607142857142858) internal successors, (130), 112 states have internal predecessors, (130), 12 states have call successors, (12), 12 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 10:39:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 152 transitions. [2022-01-31 10:39:41,232 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 152 transitions. Word has length 48 [2022-01-31 10:39:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:39:41,232 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 152 transitions. [2022-01-31 10:39:41,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 10:39:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 152 transitions. [2022-01-31 10:39:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:39:41,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:39:41,232 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:39:41,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-31 10:39:41,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:39:41,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:39:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:39:41,439 INFO L85 PathProgramCache]: Analyzing trace with hash -609988210, now seen corresponding path program 1 times [2022-01-31 10:39:41,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:39:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160371844] [2022-01-31 10:39:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:39:41,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:39:41,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:39:41,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116016415] [2022-01-31 10:39:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:39:41,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:39:41,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:39:41,456 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:39:41,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-31 10:39:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:39:41,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-31 10:39:41,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:39:41,586 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 10:39:41,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:41,610 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 27 treesize of output 31 [2022-01-31 10:39:41,613 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 28 treesize of output 28 [2022-01-31 10:39:41,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:39:41,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:39:41,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:41,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:41,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 64 treesize of output 53 [2022-01-31 10:39:42,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:42,313 INFO L353 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2022-01-31 10:39:42,313 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 2 case distinctions, treesize of input 52 treesize of output 72 [2022-01-31 10:39:43,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:43,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:39:43,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:43,933 INFO L353 Elim1Store]: treesize reduction 224, result has 12.8 percent of original size [2022-01-31 10:39:43,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 63 treesize of output 59 [2022-01-31 10:39:57,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:57,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:39:57,878 INFO L353 Elim1Store]: treesize reduction 232, result has 18.6 percent of original size [2022-01-31 10:39:57,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 83 [2022-01-31 10:40:01,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:01,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:01,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:01,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:01,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:01,282 INFO L353 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2022-01-31 10:40:01,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2022-01-31 10:40:07,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:07,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:07,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:07,848 INFO L353 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-01-31 10:40:07,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 70 treesize of output 38 [2022-01-31 10:40:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:40:08,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:40:20,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:40:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160371844] [2022-01-31 10:40:20,513 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:40:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116016415] [2022-01-31 10:40:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116016415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:40:20,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:40:20,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-01-31 10:40:20,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517064428] [2022-01-31 10:40:20,514 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:40:20,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 10:40:20,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:40:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 10:40:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1189, Unknown=31, NotChecked=0, Total=1406 [2022-01-31 10:40:20,515 INFO L87 Difference]: Start difference. First operand 135 states and 152 transitions. Second operand has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 10:40:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:40:26,728 INFO L93 Difference]: Finished difference Result 162 states and 182 transitions. [2022-01-31 10:40:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 10:40:26,728 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 48 [2022-01-31 10:40:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:40:26,729 INFO L225 Difference]: With dead ends: 162 [2022-01-31 10:40:26,729 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 10:40:26,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=239, Invalid=1530, Unknown=37, NotChecked=0, Total=1806 [2022-01-31 10:40:26,730 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 468 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:40:26,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 572 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 468 Unchecked, 0.3s Time] [2022-01-31 10:40:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 10:40:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2022-01-31 10:40:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 120 states have (on average 1.1583333333333334) internal successors, (139), 120 states have internal predecessors, (139), 13 states have call successors, (13), 13 states have call predecessors, (13), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 10:40:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2022-01-31 10:40:26,733 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 48 [2022-01-31 10:40:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:40:26,733 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2022-01-31 10:40:26,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 10:40:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2022-01-31 10:40:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:40:26,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:40:26,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:40:26,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-31 10:40:26,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-31 10:40:26,939 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:40:26,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:40:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash 928179278, now seen corresponding path program 2 times [2022-01-31 10:40:26,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:40:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985790150] [2022-01-31 10:40:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:40:26,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:40:26,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:40:26,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152166744] [2022-01-31 10:40:26,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:40:26,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:40:26,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:40:26,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:40:26,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-31 10:40:27,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:40:27,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:40:27,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-31 10:40:27,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:40:27,058 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 10:40:27,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:27,084 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 27 treesize of output 31 [2022-01-31 10:40:27,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:40:27,090 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 27 treesize of output 26 [2022-01-31 10:40:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:27,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 64 treesize of output 53 [2022-01-31 10:40:27,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:27,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:27,985 INFO L353 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-01-31 10:40:27,985 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 2 case distinctions, treesize of input 48 treesize of output 68 [2022-01-31 10:40:29,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:29,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:29,931 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 0 case distinctions, treesize of input 59 treesize of output 58 [2022-01-31 10:40:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:37,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:37,718 INFO L353 Elim1Store]: treesize reduction 51, result has 44.0 percent of original size [2022-01-31 10:40:37,718 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 2 case distinctions, treesize of input 60 treesize of output 86 [2022-01-31 10:40:39,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:39,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:39,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:39,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 68 [2022-01-31 10:40:43,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:43,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:43,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:43,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 22 [2022-01-31 10:40:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:40:43,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:40:47,383 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_951 Int) (aux_div_main_~index~0_21 Int) (v_ArrVal_953 Int)) (let ((.cse6 (* aux_div_main_~index~0_21 8))) (let ((.cse5 (store |c_#memory_int| |c_main_~#array1~0.base| (store (select |c_#memory_int| |c_main_~#array1~0.base|) (+ .cse6 |c_main_~#array1~0.offset|) v_ArrVal_951)))) (let ((.cse0 (* 2 aux_div_main_~index~0_21)) (.cse1 (select .cse5 |c_main_~#array2~0.base|)) (.cse2 (+ .cse6 |c_main_~#array2~0.offset|))) (or (< .cse0 0) (< (select .cse1 .cse2) v_ArrVal_953) (<= c_~ARR_SIZE~0 .cse0) (< (* c_main_~count~0 c_main_~num~0 c_main_~num~0) v_ArrVal_951) (<= (let ((.cse4 (store .cse1 .cse2 v_ArrVal_953))) (let ((.cse3 (select (store .cse5 |c_main_~#array2~0.base| .cse4) |c_main_~#array1~0.base|))) (+ (select .cse3 (+ |c_main_~#array1~0.offset| 4)) (select .cse3 |c_main_~#array1~0.offset|) (select .cse4 (+ |c_main_~#array2~0.offset| 4)) (select .cse4 |c_main_~#array2~0.offset|) c_main_~sum~0))) (div (+ c_~ARR_SIZE~0 1) 2))))))) is different from false [2022-01-31 10:40:47,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:40:47,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985790150] [2022-01-31 10:40:47,393 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:40:47,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152166744] [2022-01-31 10:40:47,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152166744] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:40:47,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:40:47,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-01-31 10:40:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282645037] [2022-01-31 10:40:47,394 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:40:47,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 10:40:47,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:40:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 10:40:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1136, Unknown=16, NotChecked=70, Total=1406 [2022-01-31 10:40:47,396 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 10:40:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:40:47,771 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2022-01-31 10:40:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 10:40:47,771 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 48 [2022-01-31 10:40:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:40:47,772 INFO L225 Difference]: With dead ends: 169 [2022-01-31 10:40:47,772 INFO L226 Difference]: Without dead ends: 160 [2022-01-31 10:40:47,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=204, Invalid=1344, Unknown=16, NotChecked=76, Total=1640 [2022-01-31 10:40:47,773 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 29 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:40:47,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 339 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 181 Unchecked, 0.2s Time] [2022-01-31 10:40:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-31 10:40:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2022-01-31 10:40:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 128 states have (on average 1.15625) internal successors, (148), 128 states have internal predecessors, (148), 14 states have call successors, (14), 14 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 10:40:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2022-01-31 10:40:47,776 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 48 [2022-01-31 10:40:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:40:47,776 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2022-01-31 10:40:47,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 24 states have internal predecessors, (38), 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 10:40:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2022-01-31 10:40:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:40:47,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:40:47,777 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:40:47,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-31 10:40:47,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-31 10:40:47,986 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:40:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:40:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 634776271, now seen corresponding path program 1 times [2022-01-31 10:40:47,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:40:47,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676199268] [2022-01-31 10:40:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:40:47,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:40:47,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:40:47,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249812175] [2022-01-31 10:40:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:40:47,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:40:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:40:47,996 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:40:47,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-31 10:40:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:40:48,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-31 10:40:48,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:40:48,141 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 10:40:48,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:48,168 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 27 treesize of output 31 [2022-01-31 10:40:48,175 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 28 treesize of output 28 [2022-01-31 10:40:48,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:40:48,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-31 10:40:48,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:48,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:48,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 64 treesize of output 53 [2022-01-31 10:40:48,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:48,843 INFO L353 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-01-31 10:40:48,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 56 [2022-01-31 10:40:49,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:49,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:49,140 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 52 treesize of output 57 [2022-01-31 10:40:50,365 INFO L353 Elim1Store]: treesize reduction 89, result has 31.0 percent of original size [2022-01-31 10:40:50,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 93 [2022-01-31 10:40:50,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:50,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:51,049 INFO L353 Elim1Store]: treesize reduction 312, result has 18.3 percent of original size [2022-01-31 10:40:51,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 137 treesize of output 109 [2022-01-31 10:40:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:40:52,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:40:52,187 INFO L353 Elim1Store]: treesize reduction 176, result has 21.1 percent of original size [2022-01-31 10:40:52,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 82 [2022-01-31 10:40:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:40:52,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:41:10,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:41:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676199268] [2022-01-31 10:41:10,456 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:41:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249812175] [2022-01-31 10:41:10,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249812175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:41:10,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:41:10,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-01-31 10:41:10,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716414586] [2022-01-31 10:41:10,457 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:41:10,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 10:41:10,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:41:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 10:41:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1169, Unknown=6, NotChecked=0, Total=1332 [2022-01-31 10:41:10,458 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 23 states have internal predecessors, (38), 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 10:41:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:41:11,492 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2022-01-31 10:41:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 10:41:11,493 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 23 states have internal predecessors, (38), 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 48 [2022-01-31 10:41:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:41:11,493 INFO L225 Difference]: With dead ends: 177 [2022-01-31 10:41:11,494 INFO L226 Difference]: Without dead ends: 168 [2022-01-31 10:41:11,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=201, Invalid=1515, Unknown=6, NotChecked=0, Total=1722 [2022-01-31 10:41:11,494 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 39 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 328 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 10:41:11,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 377 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 158 Invalid, 0 Unknown, 328 Unchecked, 0.3s Time] [2022-01-31 10:41:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-31 10:41:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2022-01-31 10:41:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 128 states have (on average 1.15625) internal successors, (148), 128 states have internal predecessors, (148), 14 states have call successors, (14), 14 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 10:41:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2022-01-31 10:41:11,500 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 48 [2022-01-31 10:41:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:41:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2022-01-31 10:41:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 23 states have internal predecessors, (38), 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 10:41:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2022-01-31 10:41:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:41:11,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:41:11,501 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, 1, 1, 1] [2022-01-31 10:41:11,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-31 10:41:11,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-31 10:41:11,707 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:41:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:41:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 586241887, now seen corresponding path program 10 times [2022-01-31 10:41:11,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:41:11,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451906737] [2022-01-31 10:41:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:41:11,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:41:11,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:41:11,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207476199] [2022-01-31 10:41:11,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:41:11,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:41:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:41:11,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:41:11,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-31 10:41:11,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:41:11,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:41:11,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 10:41:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:41:11,992 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 10:41:11,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:41:12,110 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 10:41:12,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:41:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451906737] [2022-01-31 10:41:12,111 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:41:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207476199] [2022-01-31 10:41:12,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207476199] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:41:12,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:41:12,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-01-31 10:41:12,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798276344] [2022-01-31 10:41:12,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:41:12,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:41:12,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:41:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:41:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:41:12,112 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 10:41:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:41:12,499 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2022-01-31 10:41:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 10:41:12,500 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 48 [2022-01-31 10:41:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:41:12,500 INFO L225 Difference]: With dead ends: 219 [2022-01-31 10:41:12,500 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 10:41:12,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 10:41:12,501 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 105 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:41:12,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 216 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:41:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 10:41:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 175. [2022-01-31 10:41:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 146 states have (on average 1.1575342465753424) internal successors, (169), 146 states have internal predecessors, (169), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 10:41:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2022-01-31 10:41:12,505 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 48 [2022-01-31 10:41:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:41:12,505 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2022-01-31 10:41:12,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 10:41:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2022-01-31 10:41:12,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:41:12,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:41:12,506 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, 1, 1, 1] [2022-01-31 10:41:12,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-31 10:41:12,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:41:12,711 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:41:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:41:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1514932569, now seen corresponding path program 11 times [2022-01-31 10:41:12,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:41:12,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508683436] [2022-01-31 10:41:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:41:12,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:41:12,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:41:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573257620] [2022-01-31 10:41:12,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:41:12,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:41:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:41:12,731 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:41:12,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-31 10:41:12,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-31 10:41:12,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:41:12,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 10:41:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:41:12,997 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 10:41:12,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:41:13,115 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 10:41:13,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:41:13,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508683436] [2022-01-31 10:41:13,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:41:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573257620] [2022-01-31 10:41:13,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573257620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:41:13,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:41:13,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-01-31 10:41:13,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826677335] [2022-01-31 10:41:13,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:41:13,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:41:13,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:41:13,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:41:13,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:41:13,117 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 10:41:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:41:13,473 INFO L93 Difference]: Finished difference Result 206 states and 227 transitions. [2022-01-31 10:41:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 10:41:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 48 [2022-01-31 10:41:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:41:13,474 INFO L225 Difference]: With dead ends: 206 [2022-01-31 10:41:13,474 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 10:41:13,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 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 10:41:13,475 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:41:13,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 196 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:41:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 10:41:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 161. [2022-01-31 10:41:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 134 states have internal predecessors, (154), 14 states have call successors, (14), 14 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 10:41:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 180 transitions. [2022-01-31 10:41:13,478 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 180 transitions. Word has length 48 [2022-01-31 10:41:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:41:13,478 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 180 transitions. [2022-01-31 10:41:13,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 10:41:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 180 transitions. [2022-01-31 10:41:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 10:41:13,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:41:13,479 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, 1, 1, 1] [2022-01-31 10:41:13,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-31 10:41:13,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:41:13,695 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:41:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:41:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1052219331, now seen corresponding path program 12 times [2022-01-31 10:41:13,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:41:13,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135060450] [2022-01-31 10:41:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:41:13,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:41:13,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:41:13,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200703678] [2022-01-31 10:41:13,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:41:13,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:41:13,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:41:13,706 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:41:13,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-31 10:41:13,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-31 10:41:13,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:41:13,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 101 conjunts are in the unsatisfiable core [2022-01-31 10:41:13,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:41:13,904 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 10:41:13,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:13,926 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-01-31 10:41:13,929 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 8 treesize of output 7 [2022-01-31 10:41:13,932 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 19 treesize of output 18 [2022-01-31 10:41:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:13,968 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 42 treesize of output 41 [2022-01-31 10:41:13,971 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 35 treesize of output 33 [2022-01-31 10:41:13,991 INFO L353 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-01-31 10:41:13,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-01-31 10:41:14,005 INFO L353 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-01-31 10:41:14,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-01-31 10:41:14,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,150 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 66 treesize of output 61 [2022-01-31 10:41:14,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,181 INFO L353 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2022-01-31 10:41:14,181 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 28 treesize of output 43 [2022-01-31 10:41:14,211 INFO L353 Elim1Store]: treesize reduction 118, result has 14.5 percent of original size [2022-01-31 10:41:14,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 82 [2022-01-31 10:41:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,505 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 90 treesize of output 81 [2022-01-31 10:41:14,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,552 INFO L353 Elim1Store]: treesize reduction 45, result has 22.4 percent of original size [2022-01-31 10:41:14,552 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 3 case distinctions, treesize of input 38 treesize of output 58 [2022-01-31 10:41:14,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:14,587 INFO L353 Elim1Store]: treesize reduction 89, result has 7.3 percent of original size [2022-01-31 10:41:14,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 112 [2022-01-31 10:41:15,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,105 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 114 treesize of output 101 [2022-01-31 10:41:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,145 INFO L353 Elim1Store]: treesize reduction 58, result has 18.3 percent of original size [2022-01-31 10:41:15,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 73 [2022-01-31 10:41:15,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:15,191 INFO L353 Elim1Store]: treesize reduction 115, result has 5.7 percent of original size [2022-01-31 10:41:15,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 119 treesize of output 142 [2022-01-31 10:41:20,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:20,937 INFO L353 Elim1Store]: treesize reduction 195, result has 41.6 percent of original size [2022-01-31 10:41:20,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 124 treesize of output 234 [2022-01-31 10:41:28,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:28,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:41:29,104 INFO L353 Elim1Store]: treesize reduction 437, result has 11.2 percent of original size [2022-01-31 10:41:29,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 13 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 187 treesize of output 208 [2022-01-31 10:41:57,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-01-31 10:41:57,998 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-01-31 10:41:57,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:41:57,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135060450] [2022-01-31 10:41:57,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:41:57,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200703678] [2022-01-31 10:41:57,998 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-31 10:41:58,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-31 10:41:58,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-31 10:41:58,199 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2022-01-31 10:41:58,202 INFO L158 Benchmark]: Toolchain (without parser) took 611447.60ms. Allocated memory was 168.8MB in the beginning and 266.3MB in the end (delta: 97.5MB). Free memory was 111.9MB in the beginning and 139.3MB in the end (delta: -27.4MB). Peak memory consumption was 71.0MB. Max. memory is 8.0GB. [2022-01-31 10:41:58,202 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 168.8MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 10:41:58,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.39ms. Allocated memory was 168.8MB in the beginning and 221.2MB in the end (delta: 52.4MB). Free memory was 111.7MB in the beginning and 196.2MB in the end (delta: -84.5MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-01-31 10:41:58,203 INFO L158 Benchmark]: Boogie Preprocessor took 51.76ms. Allocated memory is still 221.2MB. Free memory was 196.2MB in the beginning and 194.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 10:41:58,203 INFO L158 Benchmark]: RCFGBuilder took 348.34ms. Allocated memory is still 221.2MB. Free memory was 194.7MB in the beginning and 181.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-31 10:41:58,203 INFO L158 Benchmark]: IcfgTransformer took 30.24ms. Allocated memory is still 221.2MB. Free memory was 181.6MB in the beginning and 180.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 10:41:58,203 INFO L158 Benchmark]: TraceAbstraction took 610817.22ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 179.5MB in the beginning and 139.3MB in the end (delta: 40.2MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. [2022-01-31 10:41:58,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 168.8MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.39ms. Allocated memory was 168.8MB in the beginning and 221.2MB in the end (delta: 52.4MB). Free memory was 111.7MB in the beginning and 196.2MB in the end (delta: -84.5MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.76ms. Allocated memory is still 221.2MB. Free memory was 196.2MB in the beginning and 194.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 348.34ms. Allocated memory is still 221.2MB. Free memory was 194.7MB in the beginning and 181.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 30.24ms. Allocated memory is still 221.2MB. Free memory was 181.6MB in the beginning and 180.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 610817.22ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 179.5MB in the beginning and 139.3MB in the end (delta: 40.2MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...