/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-tiling/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 08:52:07,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 08:52:07,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 08:52:07,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 08:52:07,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 08:52:07,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 08:52:07,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 08:52:07,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 08:52:07,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 08:52:07,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 08:52:07,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 08:52:07,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 08:52:07,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 08:52:07,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 08:52:07,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 08:52:07,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 08:52:07,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 08:52:07,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 08:52:07,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 08:52:07,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 08:52:07,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 08:52:07,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 08:52:07,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 08:52:07,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 08:52:07,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 08:52:07,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 08:52:07,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 08:52:07,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 08:52:07,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 08:52:07,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 08:52:07,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 08:52:07,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 08:52:07,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 08:52:07,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 08:52:07,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 08:52:07,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 08:52:07,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 08:52:07,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 08:52:07,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 08:52:07,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 08:52:07,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 08:52:07,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 08:52:07,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 08:52:07,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 08:52:07,241 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 08:52:07,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 08:52:07,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 08:52:07,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 08:52:07,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 08:52:07,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 08:52:07,456 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 08:52:07,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2022-01-31 08:52:07,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433bdfb6e/6772252622ec43af90b9d1bf8e557f63/FLAG078ddd385 [2022-01-31 08:52:07,955 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 08:52:07,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr2.c [2022-01-31 08:52:07,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433bdfb6e/6772252622ec43af90b9d1bf8e557f63/FLAG078ddd385 [2022-01-31 08:52:07,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433bdfb6e/6772252622ec43af90b9d1bf8e557f63 [2022-01-31 08:52:07,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 08:52:07,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 08:52:08,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 08:52:08,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 08:52:08,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 08:52:08,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:52:07" (1/1) ... [2022-01-31 08:52:08,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e416f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08, skipping insertion in model container [2022-01-31 08:52:08,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:52:07" (1/1) ... [2022-01-31 08:52:08,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 08:52:08,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 08:52:08,148 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-tiling/nr2.c[394,407] [2022-01-31 08:52:08,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 08:52:08,183 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 08:52:08,194 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-tiling/nr2.c[394,407] [2022-01-31 08:52:08,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 08:52:08,212 INFO L208 MainTranslator]: Completed translation [2022-01-31 08:52:08,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08 WrapperNode [2022-01-31 08:52:08,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 08:52:08,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 08:52:08,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 08:52:08,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 08:52:08,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 08:52:08,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 08:52:08,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 08:52:08,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 08:52:08,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 08:52:08,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:52:08,289 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 08:52:08,295 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 08:52:08,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 08:52:08,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 08:52:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 08:52:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 08:52:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 08:52:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 08:52:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 08:52:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 08:52:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 08:52:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 08:52:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 08:52:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 08:52:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 08:52:08,378 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 08:52:08,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 08:52:08,657 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 08:52:08,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 08:52:08,663 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 08:52:08,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:52:08 BoogieIcfgContainer [2022-01-31 08:52:08,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 08:52:08,665 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 08:52:08,665 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 08:52:08,666 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 08:52:08,669 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:52:08" (1/1) ... [2022-01-31 08:52:08,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 08:52:08 BasicIcfg [2022-01-31 08:52:08,705 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 08:52:08,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 08:52:08,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 08:52:08,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 08:52:08,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:52:07" (1/4) ... [2022-01-31 08:52:08,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddf90d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:52:08, skipping insertion in model container [2022-01-31 08:52:08,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:52:08" (2/4) ... [2022-01-31 08:52:08,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddf90d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:52:08, skipping insertion in model container [2022-01-31 08:52:08,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:52:08" (3/4) ... [2022-01-31 08:52:08,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddf90d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:52:08, skipping insertion in model container [2022-01-31 08:52:08,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 08:52:08" (4/4) ... [2022-01-31 08:52:08,725 INFO L111 eAbstractionObserver]: Analyzing ICFG nr2.cJordan [2022-01-31 08:52:08,729 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 08:52:08,729 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 08:52:08,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 08:52:08,794 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 08:52:08,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 08:52:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 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 08:52:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 08:52:08,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:08,830 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] [2022-01-31 08:52:08,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:08,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1364086043, now seen corresponding path program 1 times [2022-01-31 08:52:08,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:08,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903159996] [2022-01-31 08:52:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:08,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,091 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 08:52:09,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:09,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903159996] [2022-01-31 08:52:09,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903159996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:52:09,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:52:09,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 08:52:09,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129734203] [2022-01-31 08:52:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:52:09,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 08:52:09,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 08:52:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 08:52:09,134 INFO L87 Difference]: Start difference. First operand has 37 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 08:52:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:09,220 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-01-31 08:52:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 08:52:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 22 [2022-01-31 08:52:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:09,237 INFO L225 Difference]: With dead ends: 37 [2022-01-31 08:52:09,237 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 08:52:09,239 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 08:52:09,242 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:09,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 47 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:52:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 08:52:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 08:52:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 08:52:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 08:52:09,270 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2022-01-31 08:52:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:09,270 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 08:52:09,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 08:52:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 08:52:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 08:52:09,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:09,272 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] [2022-01-31 08:52:09,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 08:52:09,272 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 507807011, now seen corresponding path program 1 times [2022-01-31 08:52:09,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:09,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627194267] [2022-01-31 08:52:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:09,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,428 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 08:52:09,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627194267] [2022-01-31 08:52:09,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627194267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:52:09,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:52:09,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 08:52:09,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698279664] [2022-01-31 08:52:09,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:52:09,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 08:52:09,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 08:52:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:52:09,432 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 08:52:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:09,571 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-01-31 08:52:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 08:52:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 22 [2022-01-31 08:52:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:09,573 INFO L225 Difference]: With dead ends: 37 [2022-01-31 08:52:09,573 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 08:52:09,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 08:52:09,580 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:09,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 102 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:52:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 08:52:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-01-31 08:52:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-01-31 08:52:09,593 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2022-01-31 08:52:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:09,594 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-01-31 08:52:09,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 08:52:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-01-31 08:52:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 08:52:09,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:09,598 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] [2022-01-31 08:52:09,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 08:52:09,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:09,599 INFO L85 PathProgramCache]: Analyzing trace with hash 508730532, now seen corresponding path program 1 times [2022-01-31 08:52:09,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:09,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202425826] [2022-01-31 08:52:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:09,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,822 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 08:52:09,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202425826] [2022-01-31 08:52:09,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202425826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:52:09,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:52:09,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 08:52:09,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551424471] [2022-01-31 08:52:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:52:09,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 08:52:09,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 08:52:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:52:09,824 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 08:52:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:09,911 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-01-31 08:52:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 08:52:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 22 [2022-01-31 08:52:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:09,915 INFO L225 Difference]: With dead ends: 41 [2022-01-31 08:52:09,915 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 08:52:09,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 08:52:09,923 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:09,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 41 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:52:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 08:52:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2022-01-31 08:52:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-01-31 08:52:09,933 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 22 [2022-01-31 08:52:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:09,933 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-01-31 08:52:09,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 08:52:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-01-31 08:52:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 08:52:09,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:09,934 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] [2022-01-31 08:52:09,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 08:52:09,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:09,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1333305547, now seen corresponding path program 1 times [2022-01-31 08:52:09,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419468015] [2022-01-31 08:52:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:09,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:10,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:10,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419468015] [2022-01-31 08:52:10,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419468015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:52:10,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:52:10,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 08:52:10,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763083406] [2022-01-31 08:52:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:52:10,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 08:52:10,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 08:52:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 08:52:10,016 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 08:52:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:10,069 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-01-31 08:52:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 08:52:10,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 25 [2022-01-31 08:52:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:10,071 INFO L225 Difference]: With dead ends: 40 [2022-01-31 08:52:10,071 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 08:52:10,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 08:52:10,072 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:10,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:52:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 08:52:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2022-01-31 08:52:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-01-31 08:52:10,076 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 25 [2022-01-31 08:52:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:10,076 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-01-31 08:52:10,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 08:52:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-01-31 08:52:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 08:52:10,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:10,077 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, 1, 1] [2022-01-31 08:52:10,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 08:52:10,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:10,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1280716363, now seen corresponding path program 1 times [2022-01-31 08:52:10,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:10,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789420635] [2022-01-31 08:52:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:10,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:10,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789420635] [2022-01-31 08:52:10,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789420635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:52:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749866525] [2022-01-31 08:52:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:10,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:10,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:52:10,176 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 08:52:10,178 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 08:52:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 08:52:10,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:52:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:10,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:52:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:10,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749866525] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:52:10,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:52:10,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2022-01-31 08:52:10,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151915968] [2022-01-31 08:52:10,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:52:10,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 08:52:10,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:10,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 08:52:10,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:52:10,460 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 08:52:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:10,519 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-01-31 08:52:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 08:52:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 28 [2022-01-31 08:52:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:10,521 INFO L225 Difference]: With dead ends: 41 [2022-01-31 08:52:10,521 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 08:52:10,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 08:52:10,524 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 15 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:10,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:52:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 08:52:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 08:52:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 32 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-01-31 08:52:10,534 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 28 [2022-01-31 08:52:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:10,534 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-01-31 08:52:10,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 08:52:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-01-31 08:52:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 08:52:10,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:10,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:52:10,566 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 08:52:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:10,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2035568437, now seen corresponding path program 2 times [2022-01-31 08:52:10,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:10,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492726673] [2022-01-31 08:52:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:10,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:10,885 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 08:52:10,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:10,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492726673] [2022-01-31 08:52:10,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492726673] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:52:10,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305831251] [2022-01-31 08:52:10,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 08:52:10,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:10,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:52:10,888 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 08:52:10,911 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 08:52:10,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 08:52:10,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:52:10,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 08:52:10,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:52:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:11,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:52:11,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305831251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:52:11,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 08:52:11,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-01-31 08:52:11,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920915548] [2022-01-31 08:52:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:52:11,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 08:52:11,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 08:52:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-31 08:52:11,089 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 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 08:52:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:11,120 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-01-31 08:52:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 08:52:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 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 31 [2022-01-31 08:52:11,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:11,123 INFO L225 Difference]: With dead ends: 41 [2022-01-31 08:52:11,123 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 08:52:11,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-31 08:52:11,129 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:11,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:52:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 08:52:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 08:52:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-01-31 08:52:11,139 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 31 [2022-01-31 08:52:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:11,140 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-01-31 08:52:11,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 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 08:52:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-01-31 08:52:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 08:52:11,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:11,144 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, 1, 1] [2022-01-31 08:52:11,171 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 08:52:11,359 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,SelfDestructingSolverStorable5 [2022-01-31 08:52:11,360 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:11,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2130316140, now seen corresponding path program 1 times [2022-01-31 08:52:11,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:11,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85770121] [2022-01-31 08:52:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:11,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85770121] [2022-01-31 08:52:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85770121] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:52:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60617202] [2022-01-31 08:52:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:11,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:52:11,682 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 08:52:11,694 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 08:52:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:11,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-31 08:52:11,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:52:11,893 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 16 treesize of output 12 [2022-01-31 08:52:11,963 INFO L353 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2022-01-31 08:52:11,963 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 24 treesize of output 29 [2022-01-31 08:52:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:12,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:52:16,019 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 35 treesize of output 31 [2022-01-31 08:52:16,024 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 63 treesize of output 59 [2022-01-31 08:52:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 08:52:16,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60617202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:52:16,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:52:16,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2022-01-31 08:52:16,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423142034] [2022-01-31 08:52:16,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:52:16,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 08:52:16,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:16,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 08:52:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-01-31 08:52:16,187 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:16,544 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2022-01-31 08:52:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 08:52:16,544 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2022-01-31 08:52:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:16,546 INFO L225 Difference]: With dead ends: 82 [2022-01-31 08:52:16,546 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 08:52:16,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 08:52:16,547 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 39 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:16,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 204 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 248 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2022-01-31 08:52:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 08:52:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2022-01-31 08:52:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.2) internal successors, (66), 56 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-01-31 08:52:16,552 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 31 [2022-01-31 08:52:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:16,553 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-01-31 08:52:16,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-01-31 08:52:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 08:52:16,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:16,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:52:16,581 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 08:52:16,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:16,755 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -949297139, now seen corresponding path program 1 times [2022-01-31 08:52:16,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:16,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729290328] [2022-01-31 08:52:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:16,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:52:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:17,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729290328] [2022-01-31 08:52:17,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729290328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:52:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213475482] [2022-01-31 08:52:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:17,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:17,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:52:17,028 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 08:52:17,029 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 08:52:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:17,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-31 08:52:17,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:52:17,194 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 16 treesize of output 12 [2022-01-31 08:52:17,530 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-01-31 08:52:17,530 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 38 treesize of output 20 [2022-01-31 08:52:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:17,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:52:21,698 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 19 treesize of output 17 [2022-01-31 08:52:21,700 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 34 treesize of output 30 [2022-01-31 08:52:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:21,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213475482] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:52:21,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:52:21,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 31 [2022-01-31 08:52:21,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316705462] [2022-01-31 08:52:21,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:52:21,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 08:52:21,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 08:52:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=779, Unknown=2, NotChecked=0, Total=930 [2022-01-31 08:52:21,847 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 31 states, 30 states have (on average 2.5) internal successors, (75), 28 states have internal predecessors, (75), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 08:52:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:52:22,314 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2022-01-31 08:52:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 08:52:22,315 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.5) internal successors, (75), 28 states have internal predecessors, (75), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2022-01-31 08:52:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:52:22,317 INFO L225 Difference]: With dead ends: 104 [2022-01-31 08:52:22,317 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 08:52:22,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=260, Invalid=1544, Unknown=2, NotChecked=0, Total=1806 [2022-01-31 08:52:22,319 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 91 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 08:52:22,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 240 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 386 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2022-01-31 08:52:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 08:52:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 85. [2022-01-31 08:52:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 73 states have internal predecessors, (87), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 08:52:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2022-01-31 08:52:22,339 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 40 [2022-01-31 08:52:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:52:22,339 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2022-01-31 08:52:22,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.5) internal successors, (75), 28 states have internal predecessors, (75), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 08:52:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2022-01-31 08:52:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 08:52:22,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:52:22,342 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:52:22,359 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 08:52:22,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:22,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:52:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:52:22,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1912507044, now seen corresponding path program 2 times [2022-01-31 08:52:22,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:52:22,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593254553] [2022-01-31 08:52:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:52:22,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:52:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:52:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:52:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:52:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:22,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:52:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593254553] [2022-01-31 08:52:22,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593254553] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:52:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506772959] [2022-01-31 08:52:22,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 08:52:22,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:52:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:52:22,979 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 08:52:22,980 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 08:52:23,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 08:52:23,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:52:23,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-31 08:52:23,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:52:23,151 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 18 treesize of output 14 [2022-01-31 08:52:23,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 08:52:23,239 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 29 treesize of output 28 [2022-01-31 08:52:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 08:52:23,373 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 26 treesize of output 25 [2022-01-31 08:52:23,419 INFO L353 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2022-01-31 08:52:23,420 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 26 treesize of output 33 [2022-01-31 08:52:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:52:23,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:52:28,513 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~j~0_24 Int)) (or (forall ((v_ArrVal_84 Int)) (let ((.cse0 (select (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* v_main_~j~0_24 (- 4)) (* c_main_~i~0 8) |c_main_~#volArray~0.offset|) v_ArrVal_84) |c_main_~#volArray~0.offset|))) (or (<= c_main_~MINVAL~0 .cse0) (= .cse0 0)))) (not (<= v_main_~j~0_24 2)))) is different from false [2022-01-31 08:52:45,212 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 77 treesize of output 73 [2022-01-31 08:52:45,217 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 855 treesize of output 847 [2022-01-31 08:52:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-01-31 08:52:46,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506772959] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:52:46,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:52:46,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 44 [2022-01-31 08:52:46,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258005703] [2022-01-31 08:52:46,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:52:46,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 08:52:46,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:52:46,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 08:52:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1547, Unknown=12, NotChecked=82, Total=1892 [2022-01-31 08:52:46,524 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 44 states, 43 states have (on average 2.0) internal successors, (86), 41 states have internal predecessors, (86), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:52:49,519 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_main_~j~0_24 Int)) (or (forall ((v_ArrVal_84 Int)) (let ((.cse0 (select (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* v_main_~j~0_24 (- 4)) (* c_main_~i~0 8) |c_main_~#volArray~0.offset|) v_ArrVal_84) |c_main_~#volArray~0.offset|))) (or (<= c_main_~MINVAL~0 .cse0) (= .cse0 0)))) (not (<= v_main_~j~0_24 2)))) (<= (+ (div (* (- 1) |c_main_~#volArray~0.offset|) 4) 4) (* c_main_~i~0 2)) (= |c_main_~#volArray~0.offset| 0) (= 2 (select (select |c_#memory_int| |c_main_~#volArray~0.base|) 0)) (= 2 c_main_~MINVAL~0)) is different from false [2022-01-31 08:52:52,187 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_main_~j~0_24 Int)) (or (forall ((v_ArrVal_84 Int)) (let ((.cse0 (select (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* v_main_~j~0_24 (- 4)) (* c_main_~i~0 8) |c_main_~#volArray~0.offset|) v_ArrVal_84) |c_main_~#volArray~0.offset|))) (or (<= c_main_~MINVAL~0 .cse0) (= .cse0 0)))) (not (<= v_main_~j~0_24 2)))) (let ((.cse1 (select (select |c_#memory_int| |c_main_~#volArray~0.base|) 0))) (or (= 0 .cse1) (and (= 2 .cse1) (= (+ (- 2) c_main_~MINVAL~0) 0)))) (<= c_main_~MINVAL~0 2) (= |c_main_~#volArray~0.offset| 0) (exists ((main_~i~0 Int) (main_~j~0 Int)) (let ((.cse3 (select |c_#memory_int| |c_main_~#volArray~0.base|)) (.cse2 (* main_~i~0 8))) (and (<= 2 main_~i~0) (or (= (* main_~j~0 4) .cse2) (<= 2 (select .cse3 |c_main_~#volArray~0.offset|))) (= (select .cse3 (+ (* main_~j~0 (- 4)) .cse2 |c_main_~#volArray~0.offset|)) 0))))) is different from false [2022-01-31 08:53:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:53:01,653 INFO L93 Difference]: Finished difference Result 140 states and 175 transitions. [2022-01-31 08:53:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 08:53:01,653 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.0) internal successors, (86), 41 states have internal predecessors, (86), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2022-01-31 08:53:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:53:01,655 INFO L225 Difference]: With dead ends: 140 [2022-01-31 08:53:01,655 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 08:53:01,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=546, Invalid=3602, Unknown=24, NotChecked=384, Total=4556 [2022-01-31 08:53:01,659 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 115 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 349 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 08:53:01,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 231 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 523 Invalid, 0 Unknown, 349 Unchecked, 0.4s Time] [2022-01-31 08:53:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 08:53:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2022-01-31 08:53:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 63 states have internal predecessors, (74), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 08:53:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2022-01-31 08:53:01,665 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 40 [2022-01-31 08:53:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:53:01,665 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2022-01-31 08:53:01,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.0) internal successors, (86), 41 states have internal predecessors, (86), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:53:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2022-01-31 08:53:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 08:53:01,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:53:01,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:53:01,695 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 08:53:01,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:01,894 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:53:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:53:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1393872052, now seen corresponding path program 2 times [2022-01-31 08:53:01,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:53:01,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988158769] [2022-01-31 08:53:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:53:01,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:53:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:53:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:53:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:53:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 08:53:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:02,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:53:02,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988158769] [2022-01-31 08:53:02,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988158769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:53:02,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839365975] [2022-01-31 08:53:02,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 08:53:02,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:53:02,136 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 08:53:02,140 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 08:53:02,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 08:53:02,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:53:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 08:53:02,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:53:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:02,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:53:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:02,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839365975] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:53:02,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:53:02,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 25 [2022-01-31 08:53:02,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175825400] [2022-01-31 08:53:02,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:53:02,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 08:53:02,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:53:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 08:53:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2022-01-31 08:53:02,746 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 11 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 08:53:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:53:03,009 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2022-01-31 08:53:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 08:53:03,009 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 11 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 49 [2022-01-31 08:53:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:53:03,010 INFO L225 Difference]: With dead ends: 102 [2022-01-31 08:53:03,010 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 08:53:03,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 08:53:03,011 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 227 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:53:03,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 92 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:53:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 08:53:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2022-01-31 08:53:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:53:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-01-31 08:53:03,014 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 49 [2022-01-31 08:53:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:53:03,015 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-01-31 08:53:03,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 11 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 08:53:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-01-31 08:53:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 08:53:03,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:53:03,016 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:53:03,034 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 08:53:03,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:03,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:53:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:53:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1169024003, now seen corresponding path program 3 times [2022-01-31 08:53:03,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:53:03,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323094155] [2022-01-31 08:53:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:53:03,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:53:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:53:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:53:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 08:53:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:53:03,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:53:03,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323094155] [2022-01-31 08:53:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323094155] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:53:03,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353181456] [2022-01-31 08:53:03,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 08:53:03,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:53:03,658 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 08:53:03,670 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 08:53:03,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-31 08:53:03,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:53:03,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-31 08:53:03,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:53:03,790 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 18 treesize of output 14 [2022-01-31 08:53:03,879 INFO L353 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2022-01-31 08:53:03,879 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 26 treesize of output 37 [2022-01-31 08:53:03,966 INFO L353 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2022-01-31 08:53:03,966 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 42 treesize of output 53 [2022-01-31 08:53:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:53:11,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:53:12,128 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~j~0 Int) (v_ArrVal_121 Int) (v_main_~j~0_36 Int)) (or (<= 2 v_main_~j~0_36) (not (<= main_~j~0 (+ v_main_~j~0_36 1))) (= (select (let ((.cse0 (* c_main_~i~0 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* main_~j~0 (- 4)) .cse0 |c_main_~#volArray~0.offset|) v_ArrVal_121) (+ (* v_main_~j~0_36 (- 4)) .cse0 |c_main_~#volArray~0.offset|) 0)) (+ |c_main_~#volArray~0.offset| 4)) 0))) is different from false [2022-01-31 08:53:14,215 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~0_46 Int)) (or (forall ((main_~j~0 Int) (v_ArrVal_121 Int) (v_main_~j~0_36 Int)) (or (= (select (let ((.cse0 (* v_main_~i~0_46 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* main_~j~0 (- 4)) |c_main_~#volArray~0.offset| .cse0) v_ArrVal_121) (+ (* v_main_~j~0_36 (- 4)) |c_main_~#volArray~0.offset| .cse0) 0)) (+ |c_main_~#volArray~0.offset| 4)) 0) (<= 2 v_main_~j~0_36) (not (<= main_~j~0 (+ v_main_~j~0_36 1))))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_46)))) is different from false [2022-01-31 08:53:14,336 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 39 treesize of output 37 [2022-01-31 08:53:14,339 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 177 treesize of output 173 [2022-01-31 08:53:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-01-31 08:53:14,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353181456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:53:14,484 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:53:14,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 40 [2022-01-31 08:53:14,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803147779] [2022-01-31 08:53:14,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:53:14,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 08:53:14,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:53:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 08:53:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1185, Unknown=4, NotChecked=146, Total=1560 [2022-01-31 08:53:14,486 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 40 states, 39 states have (on average 2.358974358974359) internal successors, (92), 37 states have internal predecessors, (92), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 08:53:16,575 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 8))) (and (<= c_main_~j~0 1) (= 0 (+ (- 1) c_main_~i~0)) (= |c_main_~#volArray~0.offset| 0) (forall ((v_main_~i~0_46 Int)) (or (forall ((main_~j~0 Int) (v_ArrVal_121 Int) (v_main_~j~0_36 Int)) (or (= (select (let ((.cse0 (* v_main_~i~0_46 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* main_~j~0 (- 4)) |c_main_~#volArray~0.offset| .cse0) v_ArrVal_121) (+ (* v_main_~j~0_36 (- 4)) |c_main_~#volArray~0.offset| .cse0) 0)) (+ |c_main_~#volArray~0.offset| 4)) 0) (<= 2 v_main_~j~0_36) (not (<= main_~j~0 (+ v_main_~j~0_36 1))))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_46)))) (= (select (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* (- 4) c_main_~j~0) .cse1 |c_main_~#volArray~0.offset|)) 0) (<= (+ .cse1 |c_main_~#volArray~0.offset|) (+ (* c_main_~j~0 4) 4)))) is different from false [2022-01-31 08:53:18,582 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 (+ (- 1) c_main_~i~0)) (= (select (select |c_#memory_int| |c_main_~#volArray~0.base|) 4) 0) (= |c_main_~#volArray~0.offset| 0) (forall ((v_main_~i~0_46 Int)) (or (forall ((main_~j~0 Int) (v_ArrVal_121 Int) (v_main_~j~0_36 Int)) (or (= (select (let ((.cse0 (* v_main_~i~0_46 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* main_~j~0 (- 4)) |c_main_~#volArray~0.offset| .cse0) v_ArrVal_121) (+ (* v_main_~j~0_36 (- 4)) |c_main_~#volArray~0.offset| .cse0) 0)) (+ |c_main_~#volArray~0.offset| 4)) 0) (<= 2 v_main_~j~0_36) (not (<= main_~j~0 (+ v_main_~j~0_36 1))))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_46))))) is different from false [2022-01-31 08:53:19,090 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((main_~j~0 Int) (v_ArrVal_121 Int) (v_main_~j~0_36 Int)) (or (<= 2 v_main_~j~0_36) (not (<= main_~j~0 (+ v_main_~j~0_36 1))) (= (select (let ((.cse0 (* c_main_~i~0 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* main_~j~0 (- 4)) .cse0 |c_main_~#volArray~0.offset|) v_ArrVal_121) (+ (* v_main_~j~0_36 (- 4)) .cse0 |c_main_~#volArray~0.offset|) 0)) (+ |c_main_~#volArray~0.offset| 4)) 0))) (= (select (select |c_#memory_int| |c_main_~#volArray~0.base|) 4) 0) (= |c_main_~#volArray~0.offset| 0) (<= c_main_~i~0 2) (<= (+ 3 (div (+ 4 (* (- 1) |c_main_~#volArray~0.offset|)) 4)) (* c_main_~i~0 2))) is different from false [2022-01-31 08:53:19,605 WARN L838 $PredicateComparison]: unable to prove that (and (= 2 c_main_~j~0) (forall ((main_~j~0 Int) (v_ArrVal_121 Int) (v_main_~j~0_36 Int)) (or (<= 2 v_main_~j~0_36) (not (<= main_~j~0 (+ v_main_~j~0_36 1))) (= (select (let ((.cse0 (* c_main_~i~0 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* main_~j~0 (- 4)) .cse0 |c_main_~#volArray~0.offset|) v_ArrVal_121) (+ (* v_main_~j~0_36 (- 4)) .cse0 |c_main_~#volArray~0.offset|) 0)) (+ |c_main_~#volArray~0.offset| 4)) 0))) (= (select (select |c_#memory_int| |c_main_~#volArray~0.base|) 4) 0) (<= 2 c_main_~i~0) (= |c_main_~#volArray~0.offset| 0) (<= c_main_~i~0 2)) is different from false [2022-01-31 08:53:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:53:25,865 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2022-01-31 08:53:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 08:53:25,865 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.358974358974359) internal successors, (92), 37 states have internal predecessors, (92), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-01-31 08:53:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:53:25,866 INFO L225 Difference]: With dead ends: 120 [2022-01-31 08:53:25,866 INFO L226 Difference]: Without dead ends: 120 [2022-01-31 08:53:25,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=436, Invalid=2329, Unknown=15, NotChecked=642, Total=3422 [2022-01-31 08:53:25,868 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 84 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 406 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 08:53:25,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 404 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 611 Invalid, 0 Unknown, 406 Unchecked, 0.3s Time] [2022-01-31 08:53:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-31 08:53:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 87. [2022-01-31 08:53:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 75 states have internal predecessors, (89), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 08:53:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-01-31 08:53:25,879 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 49 [2022-01-31 08:53:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:53:25,881 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-01-31 08:53:25,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.358974358974359) internal successors, (92), 37 states have internal predecessors, (92), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 08:53:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-01-31 08:53:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 08:53:25,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:53:25,883 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:53:25,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 08:53:26,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:26,084 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:53:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:53:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1236030756, now seen corresponding path program 4 times [2022-01-31 08:53:26,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:53:26,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985057553] [2022-01-31 08:53:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:53:26,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:53:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:53:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:53:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 08:53:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 08:53:26,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:53:26,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985057553] [2022-01-31 08:53:26,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985057553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:53:26,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:53:26,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 08:53:26,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855931815] [2022-01-31 08:53:26,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:53:26,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 08:53:26,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:53:26,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 08:53:26,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 08:53:26,162 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 08:53:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:53:26,206 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-01-31 08:53:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 08:53:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2022-01-31 08:53:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:53:26,208 INFO L225 Difference]: With dead ends: 87 [2022-01-31 08:53:26,208 INFO L226 Difference]: Without dead ends: 87 [2022-01-31 08:53:26,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 08:53:26,209 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:53:26,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:53:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-31 08:53:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-01-31 08:53:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 75 states have internal predecessors, (87), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 08:53:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2022-01-31 08:53:26,213 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 49 [2022-01-31 08:53:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:53:26,214 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2022-01-31 08:53:26,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 08:53:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2022-01-31 08:53:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 08:53:26,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:53:26,215 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:53:26,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 08:53:26,215 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:53:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:53:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash 264030846, now seen corresponding path program 5 times [2022-01-31 08:53:26,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:53:26,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587367086] [2022-01-31 08:53:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:53:26,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:53:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:53:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:53:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 08:53:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-31 08:53:26,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:53:26,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587367086] [2022-01-31 08:53:26,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587367086] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:53:26,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710004124] [2022-01-31 08:53:26,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 08:53:26,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:26,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:53:26,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:53:26,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 08:53:26,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-31 08:53:26,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:53:26,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 08:53:26,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:53:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:26,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:53:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 08:53:26,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710004124] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:53:26,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:53:26,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-31 08:53:26,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236124223] [2022-01-31 08:53:26,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:53:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 08:53:26,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:53:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 08:53:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-31 08:53:26,517 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:53:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:53:26,600 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2022-01-31 08:53:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 08:53:26,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-01-31 08:53:26,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:53:26,601 INFO L225 Difference]: With dead ends: 76 [2022-01-31 08:53:26,601 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 08:53:26,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-31 08:53:26,602 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:53:26,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 100 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:53:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 08:53:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-01-31 08:53:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 64 states have internal predecessors, (70), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 08:53:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2022-01-31 08:53:26,605 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 52 [2022-01-31 08:53:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:53:26,605 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2022-01-31 08:53:26,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:53:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2022-01-31 08:53:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 08:53:26,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:53:26,606 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:53:26,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 08:53:26,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 08:53:26,819 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:53:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:53:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1510342972, now seen corresponding path program 6 times [2022-01-31 08:53:26,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:53:26,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455009909] [2022-01-31 08:53:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:53:26,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:53:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:53:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:53:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 08:53:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 08:53:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:27,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:53:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455009909] [2022-01-31 08:53:27,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455009909] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:53:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241241655] [2022-01-31 08:53:27,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 08:53:27,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:53:27,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:53:27,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 08:53:27,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-31 08:53:27,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:53:27,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-31 08:53:27,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:53:27,201 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 16 treesize of output 12 [2022-01-31 08:53:27,243 INFO L353 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-01-31 08:53:27,243 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 26 treesize of output 31 [2022-01-31 08:53:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:28,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:53:40,261 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 39 treesize of output 35 [2022-01-31 08:53:40,263 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 75 treesize of output 67 [2022-01-31 08:53:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 08:53:40,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241241655] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:53:40,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:53:40,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 33 [2022-01-31 08:53:40,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594826536] [2022-01-31 08:53:40,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:53:40,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 08:53:40,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:53:40,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 08:53:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=916, Unknown=2, NotChecked=0, Total=1056 [2022-01-31 08:53:40,419 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 31 states have internal predecessors, (100), 11 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 08:53:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:53:40,875 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2022-01-31 08:53:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 08:53:40,876 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 31 states have internal predecessors, (100), 11 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 58 [2022-01-31 08:53:40,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:53:40,876 INFO L225 Difference]: With dead ends: 121 [2022-01-31 08:53:40,876 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 08:53:40,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=258, Invalid=1720, Unknown=2, NotChecked=0, Total=1980 [2022-01-31 08:53:40,877 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 62 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 08:53:40,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 367 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 340 Invalid, 0 Unknown, 175 Unchecked, 0.2s Time] [2022-01-31 08:53:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 08:53:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2022-01-31 08:53:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.10989010989011) internal successors, (101), 95 states have internal predecessors, (101), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 08:53:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2022-01-31 08:53:40,900 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 58 [2022-01-31 08:53:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:53:40,900 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2022-01-31 08:53:40,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 31 states have internal predecessors, (100), 11 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 08:53:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2022-01-31 08:53:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 08:53:40,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:53:40,901 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:53:40,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-31 08:53:41,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 08:53:41,102 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:53:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:53:41,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2015901597, now seen corresponding path program 7 times [2022-01-31 08:53:41,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:53:41,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793908338] [2022-01-31 08:53:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:53:41,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:53:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:53:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:53:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 08:53:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:41,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 08:53:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:41,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:53:41,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793908338] [2022-01-31 08:53:41,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793908338] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:53:41,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096781036] [2022-01-31 08:53:41,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 08:53:41,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:53:41,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:53:41,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:53:41,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 08:53:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:53:41,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-31 08:53:41,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:53:41,490 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 18 treesize of output 14 [2022-01-31 08:53:41,563 INFO L353 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-01-31 08:53:41,564 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 26 treesize of output 25 [2022-01-31 08:53:49,790 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 19 treesize of output 7 [2022-01-31 08:53:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:53:49,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:54:08,475 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 29 treesize of output 27 [2022-01-31 08:54:08,478 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 100 treesize of output 96 [2022-01-31 08:54:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 08:54:08,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096781036] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:54:08,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:54:08,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 32 [2022-01-31 08:54:08,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215291891] [2022-01-31 08:54:08,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:54:08,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 08:54:08,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:54:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 08:54:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=818, Unknown=12, NotChecked=0, Total=992 [2022-01-31 08:54:08,605 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 10 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 08:54:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:54:09,052 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2022-01-31 08:54:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 08:54:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 10 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 58 [2022-01-31 08:54:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:54:09,054 INFO L225 Difference]: With dead ends: 147 [2022-01-31 08:54:09,054 INFO L226 Difference]: Without dead ends: 147 [2022-01-31 08:54:09,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=292, Invalid=1418, Unknown=12, NotChecked=0, Total=1722 [2022-01-31 08:54:09,055 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 08:54:09,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 269 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 547 Invalid, 0 Unknown, 179 Unchecked, 0.3s Time] [2022-01-31 08:54:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-01-31 08:54:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2022-01-31 08:54:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 99 states have internal predecessors, (106), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 08:54:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2022-01-31 08:54:09,060 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 58 [2022-01-31 08:54:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:54:09,060 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2022-01-31 08:54:09,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 10 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 08:54:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2022-01-31 08:54:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 08:54:09,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:54:09,078 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:54:09,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 08:54:09,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-31 08:54:09,283 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:54:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:54:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 221728269, now seen corresponding path program 8 times [2022-01-31 08:54:09,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:54:09,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921025102] [2022-01-31 08:54:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:54:09,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:54:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:54:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:54:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:54:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 08:54:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:54:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 08:54:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:54:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 08:54:09,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:54:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921025102] [2022-01-31 08:54:09,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921025102] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:54:09,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377164204] [2022-01-31 08:54:09,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 08:54:09,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:54:09,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:54:09,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:54:09,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 08:54:09,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 08:54:09,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:54:09,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-31 08:54:09,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:54:09,926 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 18 treesize of output 14 [2022-01-31 08:54:10,040 INFO L353 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2022-01-31 08:54:10,040 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 31 treesize of output 30 [2022-01-31 08:54:10,132 INFO L353 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2022-01-31 08:54:10,133 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 31 treesize of output 30 [2022-01-31 08:54:10,255 INFO L353 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2022-01-31 08:54:10,256 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 31 treesize of output 30 [2022-01-31 08:54:10,336 INFO L353 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2022-01-31 08:54:10,336 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 31 treesize of output 30 [2022-01-31 08:54:11,563 INFO L353 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-01-31 08:54:11,563 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 38 treesize of output 20 [2022-01-31 08:54:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 08:54:11,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:54:17,727 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~j~0_71 Int)) (or (forall ((v_ArrVal_243 Int)) (= (select (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* c_main_~i~0 8) (* v_main_~j~0_71 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_243) (+ |c_main_~#volArray~0.offset| 4)) 0)) (not (<= (+ v_main_~j~0_71 1) c_main_~j~0)))) is different from false [2022-01-31 08:54:20,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~j~0_72 Int)) (or (forall ((v_ArrVal_243 Int) (v_main_~j~0_71 Int) (v_ArrVal_241 Int)) (or (not (<= (+ v_main_~j~0_71 1) v_main_~j~0_72)) (= (select (let ((.cse0 (* c_main_~i~0 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* v_main_~j~0_72 (- 4)) .cse0 |c_main_~#volArray~0.offset|) v_ArrVal_241) (+ .cse0 (* v_main_~j~0_71 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_243)) (+ |c_main_~#volArray~0.offset| 4)) 0))) (not (<= v_main_~j~0_72 2)))) is different from false [2022-01-31 08:54:22,826 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~0_78 Int)) (or (forall ((v_main_~j~0_72 Int)) (or (not (<= v_main_~j~0_72 2)) (forall ((v_ArrVal_243 Int) (v_main_~j~0_71 Int) (v_ArrVal_241 Int)) (or (not (<= (+ v_main_~j~0_71 1) v_main_~j~0_72)) (= (select (let ((.cse0 (* v_main_~i~0_78 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ .cse0 (* v_main_~j~0_72 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_241) (+ .cse0 (* v_main_~j~0_71 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_243)) (+ |c_main_~#volArray~0.offset| 4)) 0))))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_78)))) is different from false [2022-01-31 08:54:25,292 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~j~0_74 Int)) (or (not (<= (+ v_main_~j~0_74 1) c_main_~j~0)) (forall ((v_main_~j~0_72 Int) (v_ArrVal_240 Int) (v_main_~i~0_78 Int)) (or (not (<= v_main_~j~0_72 2)) (forall ((v_ArrVal_243 Int) (v_main_~j~0_71 Int) (v_ArrVal_241 Int)) (or (not (<= (+ v_main_~j~0_71 1) v_main_~j~0_72)) (= (select (let ((.cse0 (* v_main_~i~0_78 8))) (store (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ (* c_main_~i~0 8) (* v_main_~j~0_74 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_240) (+ .cse0 (* v_main_~j~0_72 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_241) (+ .cse0 (* v_main_~j~0_71 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_243)) (+ |c_main_~#volArray~0.offset| 4)) 0))) (not (<= (+ c_main_~i~0 1) v_main_~i~0_78)))))) is different from false [2022-01-31 08:54:33,707 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~j~0_75 Int)) (or (not (<= v_main_~j~0_75 2)) (forall ((v_main_~j~0_72 Int) (v_ArrVal_240 Int) (v_main_~i~0_78 Int) (v_main_~j~0_74 Int) (v_ArrVal_238 Int)) (or (forall ((v_ArrVal_243 Int) (v_main_~j~0_71 Int) (v_ArrVal_241 Int)) (or (not (<= (+ v_main_~j~0_71 1) v_main_~j~0_72)) (= (select (let ((.cse1 (* v_main_~i~0_78 8))) (store (store (let ((.cse0 (* c_main_~i~0 8))) (store (store (select |c_#memory_int| |c_main_~#volArray~0.base|) (+ .cse0 |c_main_~#volArray~0.offset| (* v_main_~j~0_75 (- 4))) v_ArrVal_238) (+ .cse0 (* v_main_~j~0_74 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_240)) (+ .cse1 (* v_main_~j~0_72 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_241) (+ .cse1 (* v_main_~j~0_71 (- 4)) |c_main_~#volArray~0.offset|) v_ArrVal_243)) (+ |c_main_~#volArray~0.offset| 4)) 0))) (not (<= (+ v_main_~j~0_74 1) v_main_~j~0_75)) (not (<= v_main_~j~0_72 2)) (not (<= (+ c_main_~i~0 1) v_main_~i~0_78)))))) is different from false