/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-fpi/ms1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 11:21:58,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 11:21:58,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 11:21:58,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 11:21:58,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 11:21:58,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 11:21:58,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 11:21:58,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 11:21:58,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 11:21:58,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 11:21:58,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 11:21:58,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 11:21:58,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 11:21:58,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 11:21:58,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 11:21:58,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 11:21:58,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 11:21:58,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 11:21:58,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 11:21:58,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 11:21:58,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 11:21:58,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 11:21:58,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 11:21:58,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 11:21:58,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 11:21:59,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 11:21:59,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 11:21:59,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 11:21:59,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 11:21:59,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 11:21:59,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 11:21:59,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 11:21:59,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 11:21:59,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 11:21:59,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:21:59,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 11:21:59,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 11:21:59,021 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 11:21:59,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 11:21:59,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 11:21:59,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 11:21:59,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 11:21:59,234 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 11:21:59,234 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 11:21:59,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1.c [2022-01-31 11:21:59,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb14b65c/25f694ead1c04b0caee016489da372f4/FLAGa5349ea8a [2022-01-31 11:21:59,664 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 11:21:59,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1.c [2022-01-31 11:21:59,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb14b65c/25f694ead1c04b0caee016489da372f4/FLAGa5349ea8a [2022-01-31 11:21:59,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb14b65c/25f694ead1c04b0caee016489da372f4 [2022-01-31 11:21:59,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 11:21:59,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 11:21:59,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 11:21:59,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 11:21:59,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 11:21:59,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbd6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59, skipping insertion in model container [2022-01-31 11:21:59,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 11:21:59,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 11:21:59,842 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-fpi/ms1.c[586,599] [2022-01-31 11:21:59,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:21:59,862 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 11:21:59,879 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-fpi/ms1.c[586,599] [2022-01-31 11:21:59,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:21:59,927 INFO L208 MainTranslator]: Completed translation [2022-01-31 11:21:59,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59 WrapperNode [2022-01-31 11:21:59,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 11:21:59,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 11:21:59,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 11:21:59,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 11:21:59,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 11:21:59,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 11:21:59,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 11:21:59,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 11:21:59,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (1/1) ... [2022-01-31 11:21:59,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:21:59,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:00,005 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 11:22:00,044 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 11:22:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 11:22:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 11:22:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 11:22:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 11:22:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 11:22:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 11:22:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 11:22:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 11:22:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 11:22:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 11:22:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 11:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 11:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 11:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 11:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 11:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 11:22:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 11:22:00,132 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 11:22:00,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 11:22:00,256 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 11:22:00,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 11:22:00,259 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 11:22:00,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:22:00 BoogieIcfgContainer [2022-01-31 11:22:00,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 11:22:00,261 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 11:22:00,261 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 11:22:00,281 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 11:22:00,284 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:22:00" (1/1) ... [2022-01-31 11:22:00,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:22:00 BasicIcfg [2022-01-31 11:22:00,301 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 11:22:00,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 11:22:00,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 11:22:00,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 11:22:00,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:21:59" (1/4) ... [2022-01-31 11:22:00,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68859d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:22:00, skipping insertion in model container [2022-01-31 11:22:00,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:59" (2/4) ... [2022-01-31 11:22:00,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68859d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:22:00, skipping insertion in model container [2022-01-31 11:22:00,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:22:00" (3/4) ... [2022-01-31 11:22:00,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68859d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:22:00, skipping insertion in model container [2022-01-31 11:22:00,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:22:00" (4/4) ... [2022-01-31 11:22:00,306 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1.cJordan [2022-01-31 11:22:00,309 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 11:22:00,309 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 11:22:00,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 11:22:00,357 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 11:22:00,357 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 11:22:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:22:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 11:22:00,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:00,374 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 11:22:00,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash -219332792, now seen corresponding path program 1 times [2022-01-31 11:22:00,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:00,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290164910] [2022-01-31 11:22:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:00,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,586 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 11:22:00,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:00,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290164910] [2022-01-31 11:22:00,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290164910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:22:00,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:22:00,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 11:22:00,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034478038] [2022-01-31 11:22:00,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:22:00,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 11:22:00,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 11:22:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:22:00,620 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 11:22:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:00,677 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-01-31 11:22:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 11:22:00,680 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 11:22:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:00,687 INFO L225 Difference]: With dead ends: 32 [2022-01-31 11:22:00,687 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 11:22:00,688 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 11:22:00,690 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:00,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 11:22:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 11:22:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 11:22:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-01-31 11:22:00,711 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2022-01-31 11:22:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:00,712 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-01-31 11:22:00,712 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 11:22:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-01-31 11:22:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 11:22:00,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:00,713 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 11:22:00,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 11:22:00,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1681189413, now seen corresponding path program 1 times [2022-01-31 11:22:00,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413625541] [2022-01-31 11:22:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:00,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,782 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 11:22:00,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:00,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413625541] [2022-01-31 11:22:00,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413625541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:22:00,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:22:00,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 11:22:00,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161662172] [2022-01-31 11:22:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:22:00,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 11:22:00,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 11:22:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 11:22:00,786 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:00,834 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-01-31 11:22:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 11:22:00,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-01-31 11:22:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:00,835 INFO L225 Difference]: With dead ends: 30 [2022-01-31 11:22:00,835 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 11:22:00,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 11:22:00,836 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:00,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 11:22:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 11:22:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-31 11:22:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-01-31 11:22:00,840 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2022-01-31 11:22:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:00,840 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-01-31 11:22:00,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-01-31 11:22:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 11:22:00,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:00,841 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, 1, 1, 1, 1, 1] [2022-01-31 11:22:00,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 11:22:00,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 982061835, now seen corresponding path program 1 times [2022-01-31 11:22:00,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868884023] [2022-01-31 11:22:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:00,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 11:22:00,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868884023] [2022-01-31 11:22:00,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868884023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:22:00,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:22:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 11:22:00,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700147823] [2022-01-31 11:22:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:22:00,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 11:22:00,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 11:22:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-31 11:22:00,931 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:01,017 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-01-31 11:22:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 11:22:01,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-01-31 11:22:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:01,018 INFO L225 Difference]: With dead ends: 35 [2022-01-31 11:22:01,018 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 11:22:01,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 11:22:01,019 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:01,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 92 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:22:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 11:22:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-31 11:22:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-01-31 11:22:01,023 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 26 [2022-01-31 11:22:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:01,023 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-01-31 11:22:01,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-01-31 11:22:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 11:22:01,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:01,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:22:01,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 11:22:01,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1617004712, now seen corresponding path program 1 times [2022-01-31 11:22:01,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:01,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237112888] [2022-01-31 11:22:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:01,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:01,119 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 11:22:01,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237112888] [2022-01-31 11:22:01,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237112888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:01,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906747772] [2022-01-31 11:22:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:01,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:01,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:01,124 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 11:22:01,126 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 11:22:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:01,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:22:01,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:01,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:22:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:01,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906747772] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:22:01,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:22:01,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-01-31 11:22:01,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108873745] [2022-01-31 11:22:01,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:22:01,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 11:22:01,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 11:22:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:22:01,412 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:01,502 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-01-31 11:22:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 11:22:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-01-31 11:22:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:01,503 INFO L225 Difference]: With dead ends: 40 [2022-01-31 11:22:01,503 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 11:22:01,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-01-31 11:22:01,504 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:01,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 54 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:22:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 11:22:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-01-31 11:22:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-01-31 11:22:01,507 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2022-01-31 11:22:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:01,507 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-01-31 11:22:01,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-01-31 11:22:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 11:22:01,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:01,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:22:01,544 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 11:22:01,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:01,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash 66776460, now seen corresponding path program 2 times [2022-01-31 11:22:01,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:01,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716957365] [2022-01-31 11:22:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:01,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:02,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716957365] [2022-01-31 11:22:02,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716957365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:02,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704878595] [2022-01-31 11:22:02,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 11:22:02,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:02,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:02,009 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 11:22:02,010 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 11:22:02,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 11:22:02,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:22:02,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-31 11:22:02,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:02,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2022-01-31 11:22:02,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:02,207 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 11:22:02,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:02,276 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 42 treesize of output 27 [2022-01-31 11:22:02,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:02,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2022-01-31 11:22:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:02,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:22:06,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2022-01-31 11:22:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:06,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704878595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:22:06,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:22:06,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2022-01-31 11:22:06,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158341329] [2022-01-31 11:22:06,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:22:06,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 11:22:06,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 11:22:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=797, Unknown=9, NotChecked=0, Total=930 [2022-01-31 11:22:06,899 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 31 states, 30 states have (on average 1.9) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:07,377 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-01-31 11:22:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 11:22:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-01-31 11:22:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:07,378 INFO L225 Difference]: With dead ends: 41 [2022-01-31 11:22:07,378 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 11:22:07,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=266, Invalid=1617, Unknown=9, NotChecked=0, Total=1892 [2022-01-31 11:22:07,380 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:07,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 163 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 424 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2022-01-31 11:22:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 11:22:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-01-31 11:22:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-01-31 11:22:07,383 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2022-01-31 11:22:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:07,383 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-01-31 11:22:07,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.9) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-01-31 11:22:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 11:22:07,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:07,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:22:07,422 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 11:22:07,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:07,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1197206905, now seen corresponding path program 3 times [2022-01-31 11:22:07,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:07,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001242328] [2022-01-31 11:22:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:07,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:07,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001242328] [2022-01-31 11:22:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001242328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020326100] [2022-01-31 11:22:07,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 11:22:07,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:07,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:07,699 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 11:22:07,701 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 11:22:07,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-31 11:22:07,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:22:07,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 11:22:07,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:07,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:22:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:07,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020326100] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:22:07,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:22:07,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2022-01-31 11:22:07,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865950782] [2022-01-31 11:22:07,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:22:07,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 11:22:07,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:07,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 11:22:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-31 11:22:07,896 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:07,999 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-01-31 11:22:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 11:22:08,000 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-01-31 11:22:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:08,000 INFO L225 Difference]: With dead ends: 48 [2022-01-31 11:22:08,000 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 11:22:08,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-01-31 11:22:08,001 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:08,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 49 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:22:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 11:22:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-01-31 11:22:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-01-31 11:22:08,004 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2022-01-31 11:22:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:08,004 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-01-31 11:22:08,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-01-31 11:22:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 11:22:08,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:08,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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 11:22:08,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-31 11:22:08,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:08,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1772479453, now seen corresponding path program 4 times [2022-01-31 11:22:08,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:08,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848738589] [2022-01-31 11:22:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:08,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:08,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848738589] [2022-01-31 11:22:08,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848738589] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501210094] [2022-01-31 11:22:08,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 11:22:08,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:08,639 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 11:22:08,641 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 11:22:08,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 11:22:08,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:22:08,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-31 11:22:08,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:08,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 13 [2022-01-31 11:22:08,797 INFO L353 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-01-31 11:22:08,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-01-31 11:22:08,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:08,885 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-31 11:22:08,885 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 1 case distinctions, treesize of input 34 treesize of output 36 [2022-01-31 11:22:08,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:08,970 INFO L353 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-01-31 11:22:08,970 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 3 case distinctions, treesize of input 55 treesize of output 52 [2022-01-31 11:22:09,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:09,069 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-31 11:22:09,069 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 41 [2022-01-31 11:22:09,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:09,153 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-31 11:22:09,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 21 [2022-01-31 11:22:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:09,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:22:10,006 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_~#sum~0.offset| Int)) (= (let ((.cse1 (select |c_#memory_int| |c_main_~#sum~0.base|)) (.cse2 (* c_main_~i~0 4))) (let ((.cse0 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| 0)) c_main_~a~0.base) (+ .cse2 c_main_~a~0.offset 4)))) (+ .cse0 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| .cse0)) c_main_~a~0.base) (+ .cse2 c_main_~a~0.offset 8))))) 0)) is different from false [2022-01-31 11:22:10,689 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_~#sum~0.offset| Int)) (= (let ((.cse1 (select |c_#memory_int| |c_main_~#sum~0.base|))) (let ((.cse0 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| 0)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)))) (+ .cse0 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| .cse0)) c_main_~a~0.base) (+ c_main_~a~0.offset 8))))) 0)) is different from false [2022-01-31 11:22:17,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_~#sum~0.offset| Int)) (= (let ((.cse1 (store |c_#memory_int| c_main_~a~0.base (store (select |c_#memory_int| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset 4) (mod 0 1))))) (let ((.cse2 (select .cse1 |c_main_~#sum~0.base|))) (let ((.cse0 (select (select (store .cse1 |c_main_~#sum~0.base| (store .cse2 |main_~#sum~0.offset| 0)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)))) (+ .cse0 (select (select (store .cse1 |c_main_~#sum~0.base| (store .cse2 |main_~#sum~0.offset| .cse0)) c_main_~a~0.base) (+ c_main_~a~0.offset 8)))))) 0)) is different from false [2022-01-31 11:22:17,763 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-31 11:22:17,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5702 treesize of output 5174 [2022-01-31 11:22:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-01-31 11:22:41,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501210094] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:22:41,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:22:41,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 16] total 42 [2022-01-31 11:22:41,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368777687] [2022-01-31 11:22:41,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:22:41,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 11:22:41,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 11:22:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1325, Unknown=6, NotChecked=228, Total=1722 [2022-01-31 11:22:41,645 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 42 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 39 states have internal predecessors, (72), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:45,141 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-01-31 11:22:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 11:22:45,142 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 39 states have internal predecessors, (72), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-01-31 11:22:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:45,144 INFO L225 Difference]: With dead ends: 74 [2022-01-31 11:22:45,144 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 11:22:45,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=436, Invalid=3476, Unknown=6, NotChecked=372, Total=4290 [2022-01-31 11:22:45,145 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:45,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 190 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 468 Invalid, 0 Unknown, 168 Unchecked, 0.3s Time] [2022-01-31 11:22:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 11:22:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2022-01-31 11:22:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-01-31 11:22:45,150 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 36 [2022-01-31 11:22:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:45,150 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-01-31 11:22:45,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 39 states have internal predecessors, (72), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-01-31 11:22:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 11:22:45,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:45,151 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:22:45,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 11:22:45,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:45,352 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 722651280, now seen corresponding path program 5 times [2022-01-31 11:22:45,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:45,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638695236] [2022-01-31 11:22:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:45,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:45,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:45,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638695236] [2022-01-31 11:22:45,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638695236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:45,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119568721] [2022-01-31 11:22:45,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 11:22:45,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:45,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:45,457 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 11:22:45,476 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 11:22:45,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-31 11:22:45,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:22:45,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 11:22:45,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:45,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:22:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119568721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:22:45,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:22:45,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 18 [2022-01-31 11:22:45,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246140265] [2022-01-31 11:22:45,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:22:45,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 11:22:45,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 11:22:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-01-31 11:22:45,717 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:45,847 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-01-31 11:22:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 11:22:45,847 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-01-31 11:22:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:45,848 INFO L225 Difference]: With dead ends: 74 [2022-01-31 11:22:45,848 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 11:22:45,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-31 11:22:45,850 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:45,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 55 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:22:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 11:22:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2022-01-31 11:22:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-01-31 11:22:45,853 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 39 [2022-01-31 11:22:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:45,853 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-01-31 11:22:45,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-01-31 11:22:45,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 11:22:45,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:45,854 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 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 11:22:45,875 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 11:22:46,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:46,064 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2027162203, now seen corresponding path program 6 times [2022-01-31 11:22:46,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:46,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684471929] [2022-01-31 11:22:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:46,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:46,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:46,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:46,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684471929] [2022-01-31 11:22:46,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684471929] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:46,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998635924] [2022-01-31 11:22:46,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 11:22:46,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:46,175 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 11:22:46,176 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 11:22:46,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-31 11:22:46,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:22:46,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 11:22:46,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 11:22:46,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:22:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 11:22:46,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998635924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:22:46,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 11:22:46,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 20 [2022-01-31 11:22:46,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112296832] [2022-01-31 11:22:46,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 11:22:46,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 11:22:46,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:22:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 11:22:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-31 11:22:46,452 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:22:46,760 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2022-01-31 11:22:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 11:22:46,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2022-01-31 11:22:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:22:46,762 INFO L225 Difference]: With dead ends: 67 [2022-01-31 11:22:46,762 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 11:22:46,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 11:22:46,763 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 11:22:46,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 98 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 11:22:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 11:22:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2022-01-31 11:22:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:22:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2022-01-31 11:22:46,767 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 40 [2022-01-31 11:22:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:22:46,767 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2022-01-31 11:22:46,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:22:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2022-01-31 11:22:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 11:22:46,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:22:46,768 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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 11:22:46,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-31 11:22:46,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:46,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:22:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:22:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -722575244, now seen corresponding path program 7 times [2022-01-31 11:22:46,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:22:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820690756] [2022-01-31 11:22:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:22:46,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:22:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:22:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:22:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:47,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:22:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820690756] [2022-01-31 11:22:47,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820690756] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 11:22:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989624158] [2022-01-31 11:22:47,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 11:22:47,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:22:47,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:22:47,671 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 11:22:47,671 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 11:22:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:22:47,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-31 11:22:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:22:47,745 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 11:22:47,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-01-31 11:22:47,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:47,834 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 23 treesize of output 22 [2022-01-31 11:22:47,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:47,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:47,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:47,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-01-31 11:22:48,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 49 [2022-01-31 11:22:48,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:22:48,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-01-31 11:22:48,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:22:48,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2022-01-31 11:22:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:22:48,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-01-31 11:22:48,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:22:48,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-01-31 11:22:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:22:48,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:23:02,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_~#sum~0.offset| Int)) (= (let ((.cse2 (select |c_#memory_int| |c_main_~#sum~0.base|))) (let ((.cse0 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse2 |main_~#sum~0.offset| 0)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)))) (let ((.cse1 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse2 |main_~#sum~0.offset| .cse0)) c_main_~a~0.base) (+ c_main_~a~0.offset 8)))) (+ .cse0 .cse1 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse2 |main_~#sum~0.offset| (+ .cse0 .cse1))) c_main_~a~0.base) (+ c_main_~a~0.offset 12)))))) 0)) is different from false [2022-01-31 11:23:11,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_~#sum~0.offset| Int)) (= (let ((.cse2 (store |c_#memory_int| c_main_~a~0.base (store (select |c_#memory_int| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset 4) (mod 0 1))))) (let ((.cse3 (select .cse2 |c_main_~#sum~0.base|))) (let ((.cse0 (select (select (store .cse2 |c_main_~#sum~0.base| (store .cse3 |main_~#sum~0.offset| 0)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)))) (let ((.cse1 (select (select (store .cse2 |c_main_~#sum~0.base| (store .cse3 |main_~#sum~0.offset| .cse0)) c_main_~a~0.base) (+ c_main_~a~0.offset 8)))) (+ .cse0 .cse1 (select (select (store .cse2 |c_main_~#sum~0.base| (store .cse3 |main_~#sum~0.offset| (+ .cse0 .cse1))) c_main_~a~0.base) (+ c_main_~a~0.offset 12))))))) 0)) is different from false [2022-01-31 11:23:32,017 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_~#sum~0.offset| Int)) (= (let ((.cse0 (store |c_#memory_int| c_main_~a~0.base (let ((.cse4 (* c_main_~i~0 4)) (.cse5 (mod 0 1))) (store (store (select |c_#memory_int| c_main_~a~0.base) (+ .cse4 c_main_~a~0.offset 4) .cse5) (+ .cse4 c_main_~a~0.offset 8) .cse5))))) (let ((.cse1 (select .cse0 |c_main_~#sum~0.base|))) (let ((.cse2 (select (select (store .cse0 |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| 0)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)))) (let ((.cse3 (select (select (store .cse0 |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| .cse2)) c_main_~a~0.base) (+ c_main_~a~0.offset 8)))) (+ (select (select (store .cse0 |c_main_~#sum~0.base| (store .cse1 |main_~#sum~0.offset| (+ .cse2 .cse3))) c_main_~a~0.base) (+ c_main_~a~0.offset 12)) .cse2 .cse3))))) 0)) is different from false [2022-01-31 11:23:32,082 INFO L353 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-01-31 11:23:32,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 15135496 treesize of output 14545672 [2022-01-31 11:31:26,907 WARN L228 SmtUtils]: Spent 7.91m on a formula simplification. DAG size of input: 2387 DAG size of output: 2370 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 11:33:02,210 WARN L228 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 442 DAG size of output: 378 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 11:33:15,771 WARN L228 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 370 DAG size of output: 370 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 11:33:44,879 WARN L228 SmtUtils]: Spent 23.00s on a formula simplification. DAG size of input: 370 DAG size of output: 370 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 11:34:13,194 WARN L228 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 367 DAG size of output: 367 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)