/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/reducercommutativity/avg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 08:23:21,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 08:23:21,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 08:23:21,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 08:23:21,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 08:23:21,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 08:23:21,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 08:23:21,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 08:23:21,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 08:23:21,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 08:23:21,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 08:23:21,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 08:23:21,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 08:23:21,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 08:23:21,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 08:23:21,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 08:23:21,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 08:23:21,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 08:23:21,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 08:23:21,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 08:23:21,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 08:23:21,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 08:23:21,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 08:23:21,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 08:23:21,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 08:23:21,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 08:23:21,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 08:23:21,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 08:23:21,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 08:23:21,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 08:23:21,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 08:23:21,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 08:23:21,828 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 08:23:21,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 08:23:21,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 08:23:21,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 08:23:21,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 08:23:21,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 08:23:21,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 08:23:21,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 08:23:21,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 08:23:21,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 08:23:21,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 08:23:21,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 08:23:21,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 08:23:21,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 08:23:21,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 08:23:21,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 08:23:21,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 08:23:21,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 08:23:21,832 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 08:23:21,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 08:23:22,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 08:23:22,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 08:23:22,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 08:23:22,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 08:23:22,034 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 08:23:22,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg.i [2022-01-31 08:23:22,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801df4143/fdc414c9d80f429da184c2fc87a800cb/FLAGbfc283aa1 [2022-01-31 08:23:22,544 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 08:23:22,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg.i [2022-01-31 08:23:22,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801df4143/fdc414c9d80f429da184c2fc87a800cb/FLAGbfc283aa1 [2022-01-31 08:23:22,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801df4143/fdc414c9d80f429da184c2fc87a800cb [2022-01-31 08:23:22,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 08:23:23,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 08:23:23,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 08:23:23,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 08:23:23,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 08:23:23,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:23:22" (1/1) ... [2022-01-31 08:23:23,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3010cd48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23, skipping insertion in model container [2022-01-31 08:23:23,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:23:22" (1/1) ... [2022-01-31 08:23:23,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 08:23:23,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 08:23:23,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg.i[1286,1299] [2022-01-31 08:23:23,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 08:23:23,187 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 08:23:23,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg.i[1286,1299] [2022-01-31 08:23:23,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 08:23:23,217 INFO L208 MainTranslator]: Completed translation [2022-01-31 08:23:23,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23 WrapperNode [2022-01-31 08:23:23,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 08:23:23,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 08:23:23,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 08:23:23,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 08:23:23,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 08:23:23,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 08:23:23,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 08:23:23,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 08:23:23,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 08:23:23,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:23:23,293 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 08:23:23,300 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 08:23:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 08:23:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 08:23:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 08:23:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-01-31 08:23:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 08:23:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 08:23:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 08:23:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 08:23:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 08:23:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 08:23:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 08:23:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 08:23:23,367 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 08:23:23,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 08:23:23,568 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 08:23:23,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 08:23:23,572 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 08:23:23,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:23:23 BoogieIcfgContainer [2022-01-31 08:23:23,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 08:23:23,574 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 08:23:23,574 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 08:23:23,600 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 08:23:23,602 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:23:23" (1/1) ... [2022-01-31 08:23:23,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 08:23:23 BasicIcfg [2022-01-31 08:23:23,638 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 08:23:23,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 08:23:23,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 08:23:23,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 08:23:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:23:22" (1/4) ... [2022-01-31 08:23:23,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8e3523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:23:23, skipping insertion in model container [2022-01-31 08:23:23,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:23:23" (2/4) ... [2022-01-31 08:23:23,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8e3523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:23:23, skipping insertion in model container [2022-01-31 08:23:23,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:23:23" (3/4) ... [2022-01-31 08:23:23,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8e3523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:23:23, skipping insertion in model container [2022-01-31 08:23:23,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 08:23:23" (4/4) ... [2022-01-31 08:23:23,657 INFO L111 eAbstractionObserver]: Analyzing ICFG avg.iJordan [2022-01-31 08:23:23,661 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 08:23:23,661 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 08:23:23,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 08:23:23,780 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 08:23:23,781 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 08:23:23,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 08:23:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 08:23:23,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:23:23,836 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:23:23,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:23:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:23:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1496605831, now seen corresponding path program 1 times [2022-01-31 08:23:23,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:23:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703232715] [2022-01-31 08:23:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:23,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:23:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:23:24,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:23:24,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703232715] [2022-01-31 08:23:24,010 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-01-31 08:23:24,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631692469] [2022-01-31 08:23:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:24,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:24,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:23:24,013 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 08:23:24,052 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 08:23:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:23:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-31 08:23:24,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:23:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 08:23:24,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:23:24,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631692469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:23:24,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:23:24,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-31 08:23:24,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790342376] [2022-01-31 08:23:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:23:24,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-31 08:23:24,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:23:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-31 08:23:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-31 08:23:24,187 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:23:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:23:24,197 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-01-31 08:23:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-31 08:23:24,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 08:23:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:23:24,205 INFO L225 Difference]: With dead ends: 31 [2022-01-31 08:23:24,205 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 08:23:24,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-31 08:23:24,210 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:23:24,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:23:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 08:23:24,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 08:23:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:23:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-31 08:23:24,245 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 32 [2022-01-31 08:23:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:23:24,245 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-31 08:23:24,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:23:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-31 08:23:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 08:23:24,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:23:24,248 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:23:24,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 08:23:24,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-31 08:23:24,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:23:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:23:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1321388457, now seen corresponding path program 1 times [2022-01-31 08:23:24,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:23:24,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961604452] [2022-01-31 08:23:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:24,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:23:24,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 08:23:24,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017234460] [2022-01-31 08:23:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:24,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:23:24,509 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 08:23:24,549 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 08:23:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:23:24,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 08:23:24,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:23:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 08:23:24,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:23:24,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:23:24,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961604452] [2022-01-31 08:23:24,730 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 08:23:24,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017234460] [2022-01-31 08:23:24,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017234460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:23:24,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:23:24,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 08:23:24,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531165494] [2022-01-31 08:23:24,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:23:24,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 08:23:24,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:23:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 08:23:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 08:23:24,732 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 08:23:24,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:23:24,758 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-01-31 08:23:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 08:23:24,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-01-31 08:23:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:23:24,759 INFO L225 Difference]: With dead ends: 27 [2022-01-31 08:23:24,759 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 08:23:24,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 08:23:24,760 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:23:24,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:23:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 08:23:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-01-31 08:23:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:23:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-31 08:23:24,764 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 32 [2022-01-31 08:23:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:23:24,765 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-31 08:23:24,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 08:23:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-31 08:23:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 08:23:24,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:23:24,766 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:23:24,786 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 08:23:24,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-31 08:23:24,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:23:24,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:23:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash -208069594, now seen corresponding path program 1 times [2022-01-31 08:23:24,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:23:24,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435780150] [2022-01-31 08:23:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:24,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:23:24,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 08:23:24,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758599965] [2022-01-31 08:23:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:24,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:24,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:23:25,009 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 08:23:25,010 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 08:23:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:23:25,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 08:23:25,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:23:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-31 08:23:25,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:23:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 08:23:25,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:23:25,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435780150] [2022-01-31 08:23:25,302 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 08:23:25,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758599965] [2022-01-31 08:23:25,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758599965] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:23:25,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 08:23:25,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2022-01-31 08:23:25,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344570721] [2022-01-31 08:23:25,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 08:23:25,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 08:23:25,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:23:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 08:23:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 08:23:25,304 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 08:23:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:23:25,350 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-01-31 08:23:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 08:23:25,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 38 [2022-01-31 08:23:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:23:25,351 INFO L225 Difference]: With dead ends: 29 [2022-01-31 08:23:25,352 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 08:23:25,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-31 08:23:25,353 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:23:25,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:23:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 08:23:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-31 08:23:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:23:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-31 08:23:25,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 38 [2022-01-31 08:23:25,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:23:25,356 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-31 08:23:25,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 08:23:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-31 08:23:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 08:23:25,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:23:25,357 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:23:25,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 08:23:25,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:25,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:23:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:23:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1799578397, now seen corresponding path program 2 times [2022-01-31 08:23:25,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:23:25,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030514976] [2022-01-31 08:23:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:25,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:23:25,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 08:23:25,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765102667] [2022-01-31 08:23:25,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 08:23:25,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:25,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:23:25,604 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 08:23:25,628 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 08:23:25,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 08:23:25,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:23:25,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 08:23:25,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:23:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-31 08:23:25,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:23:25,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:23:25,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030514976] [2022-01-31 08:23:25,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 08:23:25,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765102667] [2022-01-31 08:23:25,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765102667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:23:25,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:23:25,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 08:23:25,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615848698] [2022-01-31 08:23:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:23:25,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 08:23:25,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:23:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 08:23:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 08:23:25,809 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 08:23:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:23:25,834 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-01-31 08:23:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 08:23:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2022-01-31 08:23:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:23:25,836 INFO L225 Difference]: With dead ends: 30 [2022-01-31 08:23:25,836 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 08:23:25,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 08:23:25,837 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:23:25,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 32 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:23:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 08:23:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-31 08:23:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:23:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-01-31 08:23:25,840 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 44 [2022-01-31 08:23:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:23:25,841 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-01-31 08:23:25,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 08:23:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-01-31 08:23:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 08:23:25,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:23:25,842 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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 08:23:25,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 08:23:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:26,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:23:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:23:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1994173184, now seen corresponding path program 1 times [2022-01-31 08:23:26,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:23:26,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001056843] [2022-01-31 08:23:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:26,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:23:26,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 08:23:26,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156673189] [2022-01-31 08:23:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:23:26,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:23:26,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:23:26,093 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 08:23:26,095 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 08:23:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:23:26,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 101 conjunts are in the unsatisfiable core [2022-01-31 08:23:26,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:23:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 08:23:27,148 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 08:23:27,149 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 269 treesize of output 139 [2022-01-31 08:23:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 08:23:44,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 08:23:44,076 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 467 treesize of output 242 [2022-01-31 08:23:58,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 08:23:58,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 08:23:58,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 08:23:58,122 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 340 treesize of output 254 [2022-01-31 08:24:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 08:24:05,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 08:24:05,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 08:24:05,493 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 3 case distinctions, treesize of input 705 treesize of output 348 [2022-01-31 08:25:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 08:25:21,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:25:41,765 WARN L228 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 119 DAG size of output: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:27:04,386 WARN L228 SmtUtils]: Spent 23.59s on a formula simplification. DAG size of input: 138 DAG size of output: 134 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:29:56,995 WARN L228 SmtUtils]: Spent 14.01s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:33:40,337 WARN L228 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 212 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:35:40,177 WARN L228 SmtUtils]: Spent 30.57s on a formula simplification that was a NOOP. DAG size: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:36:11,223 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse48 (select |c_#memory_int| |c_avg_#in~x.base|)) (.cse47 (+ |c_avg_#in~x.offset| 4))) (let ((.cse44 (select .cse48 .cse47)) (.cse45 (select .cse48 |c_avg_#in~x.offset|))) (let ((.cse40 (let ((.cse46 (store (store .cse48 |c_avg_#in~x.offset| .cse44) (+ (* c_~N~0 4) (- 4) |c_avg_#in~x.offset|) .cse45))) (+ (select .cse46 .cse47) (select .cse46 |c_avg_#in~x.offset|)))) (.cse43 (+ .cse44 .cse45))) (let ((.cse42 (div .cse43 c_~N~0)) (.cse41 (div .cse40 c_~N~0)) (.cse11 (= (mod .cse40 c_~N~0) 0))) (let ((.cse19 (< c_~N~0 0)) (.cse5 (= (mod .cse43 c_~N~0) 0)) (.cse31 (not .cse11)) (.cse2 (< .cse43 0)) (.cse29 (< .cse40 0)) (.cse22 (mod (+ 4294967295 .cse41) 4294967296)) (.cse37 (mod (+ 4294967295 .cse42) 4294967296)) (.cse26 (mod .cse42 4294967296)) (.cse39 (mod (+ .cse41 1) 4294967296)) (.cse17 (mod (+ .cse42 1) 4294967296)) (.cse24 (mod .cse41 4294967296)) (.cse38 (+ c_avg_~ret~0 (select (select |c_#memory_int| c_avg_~x.base) (+ (* 4 c_avg_~i~0) c_avg_~x.offset 4))))) (let ((.cse1 (< .cse38 0)) (.cse0 (= 0 (mod .cse38 c_~N~0))) (.cse8 (not (= .cse17 .cse24))) (.cse10 (not (= .cse17 .cse39))) (.cse15 (<= 0 .cse40)) (.cse16 (not (= .cse39 .cse26))) (.cse23 (not (= .cse24 .cse37))) (.cse20 (not (= .cse22 .cse26))) (.cse9 (not .cse29)) (.cse4 (not .cse2)) (.cse21 (not (= .cse22 .cse37))) (.cse13 (not (= .cse24 .cse26))) (.cse7 (and .cse31 .cse29)) (.cse12 (not .cse5)) (.cse27 (div .cse38 c_~N~0)) (.cse25 (not .cse19))) (and (or (and (not .cse0) .cse1) (let ((.cse18 (mod .cse27 4294967296))) (let ((.cse14 (= .cse18 .cse26))) (and (or (let ((.cse6 (= .cse17 .cse18)) (.cse3 (and (or .cse13 .cse14 .cse7) (or .cse14 .cse15 .cse11 .cse16)))) (and (or .cse2 .cse3) (or .cse4 .cse5 .cse6 .cse7 .cse8) (or .cse9 .cse4 .cse5 .cse6 .cse10 .cse11) (or .cse3 .cse12))) .cse19) (or (and (or .cse13 .cse14 .cse7 .cse12) (or .cse9 .cse20 .cse2 .cse14 .cse11) (or .cse2 .cse13 .cse14 .cse7) (or .cse9 .cse20 .cse14 .cse11 .cse12) (or .cse9 .cse4 .cse5 .cse21 .cse11 (= .cse18 .cse22)) (or .cse4 .cse5 .cse23 .cse7 (= .cse18 .cse24))) .cse25))))) (or (not .cse1) .cse0 (and (or (let ((.cse32 (mod (+ .cse27 1) 4294967296))) (let ((.cse30 (let ((.cse33 (= .cse32 .cse26))) (and (or .cse33 .cse15 .cse11 .cse16) (or .cse33 .cse13 .cse7)))) (.cse28 (= .cse17 .cse32))) (and (or .cse28 .cse4 .cse5 .cse29 .cse8) (or .cse2 .cse30) (or .cse30 .cse12) (or .cse28 .cse4 .cse5 .cse31 .cse8) (or .cse28 .cse9 .cse4 .cse5 .cse10 .cse11)))) .cse19) (or (let ((.cse36 (mod (+ 4294967295 .cse27) 4294967296))) (let ((.cse35 (= .cse36 .cse37)) (.cse34 (= .cse36 .cse26))) (and (or .cse2 .cse34 .cse13 .cse7) (or .cse35 .cse4 .cse5 .cse23 .cse7) (or .cse9 .cse20 .cse2 .cse34 .cse11) (or .cse9 .cse20 .cse34 .cse11 .cse12) (or .cse9 .cse35 .cse4 .cse5 .cse21 .cse11) (or .cse34 .cse13 .cse7 .cse12)))) .cse25)))))))))) is different from true [2022-01-31 08:37:14,615 WARN L228 SmtUtils]: Spent 27.03s on a formula simplification that was a NOOP. DAG size: 133 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:37:48,621 WARN L228 SmtUtils]: Spent 16.24s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 08:37:49,546 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 9041 treesize of output 7153 [2022-01-31 08:37:49,584 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-31 08:37:49,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10737 treesize of output 8993