/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/nla-digbench-scaling/divbin2_valuebound50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 06:27:21,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 06:27:21,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 06:27:21,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 06:27:21,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 06:27:21,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 06:27:21,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 06:27:21,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 06:27:21,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 06:27:21,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 06:27:21,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 06:27:21,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 06:27:21,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 06:27:21,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 06:27:21,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 06:27:21,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 06:27:21,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 06:27:21,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 06:27:21,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 06:27:21,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 06:27:21,068 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 06:27:21,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 06:27:21,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 06:27:21,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 06:27:21,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 06:27:21,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 06:27:21,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 06:27:21,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 06:27:21,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 06:27:21,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 06:27:21,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 06:27:21,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 06:27:21,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 06:27:21,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 06:27:21,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 06:27:21,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 06:27:21,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 06:27:21,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 06:27:21,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 06:27:21,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 06:27:21,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:27:21,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 06:27:21,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 06:27:21,094 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 06:27:21,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 06:27:21,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 06:27:21,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 06:27:21,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 06:27:21,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 06:27:21,375 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 06:27:21,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i [2022-04-06 06:27:21,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68836f1c6/edb90f86dc2b4686afa2ee2d560afe94/FLAGec187adae [2022-04-06 06:27:21,845 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 06:27:21,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i [2022-04-06 06:27:21,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68836f1c6/edb90f86dc2b4686afa2ee2d560afe94/FLAGec187adae [2022-04-06 06:27:21,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68836f1c6/edb90f86dc2b4686afa2ee2d560afe94 [2022-04-06 06:27:21,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 06:27:21,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 06:27:21,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 06:27:21,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 06:27:21,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 06:27:21,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:27:21" (1/1) ... [2022-04-06 06:27:21,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e404ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:21, skipping insertion in model container [2022-04-06 06:27:21,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:27:21" (1/1) ... [2022-04-06 06:27:21,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 06:27:21,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 06:27:22,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i[951,964] [2022-04-06 06:27:22,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:27:22,068 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 06:27:22,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i[951,964] [2022-04-06 06:27:22,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:27:22,093 INFO L208 MainTranslator]: Completed translation [2022-04-06 06:27:22,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22 WrapperNode [2022-04-06 06:27:22,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 06:27:22,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 06:27:22,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 06:27:22,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 06:27:22,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 06:27:22,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 06:27:22,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 06:27:22,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 06:27:22,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:27:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:27:22,163 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) [2022-04-06 06:27:22,180 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 [2022-04-06 06:27:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 06:27:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 06:27:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 06:27:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 06:27:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 06:27:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 06:27:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 06:27:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 06:27:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 06:27:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 06:27:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 06:27:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 06:27:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 06:27:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 06:27:22,265 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 06:27:22,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 06:27:22,400 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 06:27:22,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 06:27:22,405 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 06:27:22,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:27:22 BoogieIcfgContainer [2022-04-06 06:27:22,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 06:27:22,407 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 06:27:22,407 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 06:27:22,408 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 06:27:22,411 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:27:22" (1/1) ... [2022-04-06 06:27:22,413 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 06:27:22,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:27:22 BasicIcfg [2022-04-06 06:27:22,427 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 06:27:22,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 06:27:22,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 06:27:22,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 06:27:22,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:27:21" (1/4) ... [2022-04-06 06:27:22,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c09af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:27:22, skipping insertion in model container [2022-04-06 06:27:22,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:27:22" (2/4) ... [2022-04-06 06:27:22,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c09af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:27:22, skipping insertion in model container [2022-04-06 06:27:22,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:27:22" (3/4) ... [2022-04-06 06:27:22,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c09af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:27:22, skipping insertion in model container [2022-04-06 06:27:22,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:27:22" (4/4) ... [2022-04-06 06:27:22,432 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound50.iJordan [2022-04-06 06:27:22,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 06:27:22,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 06:27:22,513 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 06:27:22,522 INFO L340 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 [2022-04-06 06:27:22,522 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 06:27:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 06:27:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-06 06:27:22,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:27:22,555 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:27:22,555 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:27:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:27:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash 483266332, now seen corresponding path program 1 times [2022-04-06 06:27:22,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:27:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747165988] [2022-04-06 06:27:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:27:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 06:27:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 06:27:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 06:27:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:27:22,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747165988] [2022-04-06 06:27:22,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747165988] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:27:22,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:27:22,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 06:27:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253932418] [2022-04-06 06:27:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:27:22,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 06:27:22,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:27:22,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 06:27:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:27:22,805 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-04-06 06:27:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:27:22,860 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-06 06:27:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 06:27:22,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 18 [2022-04-06 06:27:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:27:22,868 INFO L225 Difference]: With dead ends: 30 [2022-04-06 06:27:22,868 INFO L226 Difference]: Without dead ends: 25 [2022-04-06 06:27:22,870 INFO L912 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 [2022-04-06 06:27:22,874 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:27:22,875 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:27:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-06 06:27:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-06 06:27:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 06:27:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-06 06:27:22,907 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2022-04-06 06:27:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:27:22,908 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-06 06:27:22,908 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-04-06 06:27:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-06 06:27:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-06 06:27:22,910 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:27:22,910 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:27:22,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 06:27:22,910 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:27:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:27:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2138426952, now seen corresponding path program 1 times [2022-04-06 06:27:22,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:27:22,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056586087] [2022-04-06 06:27:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:27:22,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:27:22,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848588235] [2022-04-06 06:27:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:22,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:27:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:27:22,954 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) [2022-04-06 06:27:22,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 06:27:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 06:27:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:27:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 06:27:23,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:27:23,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:27:23,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056586087] [2022-04-06 06:27:23,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:27:23,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848588235] [2022-04-06 06:27:23,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848588235] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:27:23,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:27:23,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 06:27:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468074454] [2022-04-06 06:27:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:27:23,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 06:27:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:27:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 06:27:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-06 06:27:23,291 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 06:27:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:27:23,339 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-04-06 06:27:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 06:27:23,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 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 19 [2022-04-06 06:27:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:27:23,341 INFO L225 Difference]: With dead ends: 35 [2022-04-06 06:27:23,341 INFO L226 Difference]: Without dead ends: 34 [2022-04-06 06:27:23,341 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-06 06:27:23,342 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:27:23,343 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:27:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-06 06:27:23,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-06 06:27:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 06:27:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-04-06 06:27:23,348 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2022-04-06 06:27:23,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:27:23,349 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-04-06 06:27:23,349 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 06:27:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-06 06:27:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-06 06:27:23,350 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:27:23,350 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:27:23,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 06:27:23,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:27:23,572 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:27:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:27:23,573 INFO L85 PathProgramCache]: Analyzing trace with hash -554838191, now seen corresponding path program 1 times [2022-04-06 06:27:23,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:27:23,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061401092] [2022-04-06 06:27:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:23,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:27:23,586 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:27:23,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717498507] [2022-04-06 06:27:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:23,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:27:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:27:23,590 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) [2022-04-06 06:27:23,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 06:27:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:23,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 06:27:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:27:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-06 06:27:23,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:27:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:27:23,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061401092] [2022-04-06 06:27:23,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:27:23,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717498507] [2022-04-06 06:27:23,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717498507] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:27:23,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:27:23,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 06:27:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409367891] [2022-04-06 06:27:23,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:27:23,808 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 06:27:23,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:27:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 06:27:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-06 06:27:23,810 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 06:27:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:27:23,893 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-04-06 06:27:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 06:27:23,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-04-06 06:27:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:27:23,895 INFO L225 Difference]: With dead ends: 43 [2022-04-06 06:27:23,895 INFO L226 Difference]: Without dead ends: 42 [2022-04-06 06:27:23,895 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 06:27:23,896 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:27:23,896 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:27:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-06 06:27:23,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-04-06 06:27:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 06:27:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-04-06 06:27:23,901 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2022-04-06 06:27:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:27:23,901 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-04-06 06:27:23,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 06:27:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-04-06 06:27:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-06 06:27:23,902 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:27:23,902 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:27:23,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 06:27:24,115 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 06:27:24,116 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:27:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:27:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1600606598, now seen corresponding path program 1 times [2022-04-06 06:27:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:27:24,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437373250] [2022-04-06 06:27:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:27:24,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:27:24,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428487909] [2022-04-06 06:27:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:24,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:27:24,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:27:24,138 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) [2022-04-06 06:27:24,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 06:27:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:24,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 06:27:24,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:27:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 06:27:24,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:27:24,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:27:24,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437373250] [2022-04-06 06:27:24,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:27:24,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428487909] [2022-04-06 06:27:24,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428487909] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:27:24,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:27:24,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 06:27:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838892340] [2022-04-06 06:27:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:27:24,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 06:27:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:27:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 06:27:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:27:24,248 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 06:27:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:27:24,278 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-04-06 06:27:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 06:27:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-04-06 06:27:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:27:24,280 INFO L225 Difference]: With dead ends: 38 [2022-04-06 06:27:24,280 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 06:27:24,280 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:27:24,284 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:27:24,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:27:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 06:27:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 06:27:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 06:27:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-04-06 06:27:24,300 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2022-04-06 06:27:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:27:24,301 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-04-06 06:27:24,301 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 06:27:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-04-06 06:27:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-06 06:27:24,304 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:27:24,304 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:27:24,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 06:27:24,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:27:24,520 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:27:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:27:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1664896543, now seen corresponding path program 1 times [2022-04-06 06:27:24,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:27:24,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846859594] [2022-04-06 06:27:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:27:24,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:27:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887780385] [2022-04-06 06:27:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:27:24,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:27:24,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:27:24,532 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) [2022-04-06 06:27:24,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 06:27:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:27:24,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-06 06:27:24,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:27:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 06:27:24,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:27:37,878 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_main_~b~0 4294967296))) (or (= (mod c_main_~A~0 4294967296) (mod (+ (* (div .cse0 2) (* c_main_~q~0 2)) c_main_~r~0) 4294967296)) (<= .cse0 (mod c_main_~r~0 4294967296)))) is different from true [2022-04-06 06:27:50,564 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (* c_main_~b~0 2) 4294967296)) (.cse0 (mod c_main_~r~0 4294967296))) (or (not (<= (mod c_main_~b~0 4294967296) .cse0)) (= (mod c_main_~A~0 4294967296) (mod (+ (* (div .cse1 2) (* c_main_~q~0 2)) c_main_~r~0) 4294967296)) (<= .cse1 .cse0))) is different from true [2022-04-06 06:28:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-04-06 06:28:03,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:28:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846859594] [2022-04-06 06:28:03,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:28:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887780385] [2022-04-06 06:28:03,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887780385] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:28:03,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:28:03,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2022-04-06 06:28:03,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393954405] [2022-04-06 06:28:03,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:28:03,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 06:28:03,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:28:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 06:28:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=142, Unknown=3, NotChecked=50, Total=240 [2022-04-06 06:28:03,402 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 06:28:05,618 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_main_~A~0 4294967296))) (and (= .cse0 (mod (+ c_main_~r~0 (* c_main_~b~0 c_main_~q~0)) 4294967296)) (= .cse0 (mod (+ (* (div (mod c_main_~b~0 4294967296) 2) (* c_main_~q~0 2)) c_main_~r~0) 4294967296)) (<= .cse0 50))) is different from true [2022-04-06 06:28:07,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:09,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:11,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:14,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:16,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:18,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:20,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 06:28:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:28:20,998 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-04-06 06:28:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 06:28:20,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 29 [2022-04-06 06:28:20,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:28:21,000 INFO L225 Difference]: With dead ends: 59 [2022-04-06 06:28:21,000 INFO L226 Difference]: Without dead ends: 58 [2022-04-06 06:28:21,000 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=55, Invalid=193, Unknown=4, NotChecked=90, Total=342 [2022-04-06 06:28:21,001 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 14 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-04-06 06:28:21,001 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 164 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 160 Invalid, 7 Unknown, 116 Unchecked, 15.4s Time] [2022-04-06 06:28:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-04-06 06:28:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2022-04-06 06:28:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 06:28:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-04-06 06:28:21,007 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 29 [2022-04-06 06:28:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:28:21,008 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-04-06 06:28:21,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 06:28:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-04-06 06:28:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 06:28:21,009 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:28:21,009 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:28:21,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-06 06:28:21,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:28:21,215 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:28:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:28:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash -976975752, now seen corresponding path program 2 times [2022-04-06 06:28:21,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:28:21,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038734695] [2022-04-06 06:28:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:28:21,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:28:21,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:28:21,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76854975] [2022-04-06 06:28:21,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 06:28:21,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:28:21,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:28:21,226 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) [2022-04-06 06:28:21,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 06:28:21,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 06:28:21,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 06:28:21,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-06 06:28:21,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:28:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-06 06:28:21,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:28:25,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:28:25,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038734695] [2022-04-06 06:28:25,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:28:25,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76854975] [2022-04-06 06:28:25,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76854975] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 06:28:25,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:28:25,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-06 06:28:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952562379] [2022-04-06 06:28:25,995 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 06:28:25,995 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 06:28:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:28:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 06:28:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=103, Unknown=2, NotChecked=0, Total=132 [2022-04-06 06:28:25,996 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 06:28:28,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-06 06:28:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:28:28,311 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-04-06 06:28:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 06:28:28,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-04-06 06:28:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:28:28,312 INFO L225 Difference]: With dead ends: 60 [2022-04-06 06:28:28,312 INFO L226 Difference]: Without dead ends: 59 [2022-04-06 06:28:28,312 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=35, Invalid=145, Unknown=2, NotChecked=0, Total=182 [2022-04-06 06:28:28,313 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 06:28:28,313 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 100 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 06:28:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-06 06:28:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2022-04-06 06:28:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 06:28:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-04-06 06:28:28,323 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 31 [2022-04-06 06:28:28,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:28:28,323 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-04-06 06:28:28,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 06:28:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-04-06 06:28:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 06:28:28,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:28:28,325 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:28:28,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 06:28:28,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:28:28,536 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:28:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:28:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1815734547, now seen corresponding path program 3 times [2022-04-06 06:28:28,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:28:28,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378705555] [2022-04-06 06:28:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:28:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:28:28,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:28:28,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474830579] [2022-04-06 06:28:28,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 06:28:28,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:28:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:28:28,553 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) [2022-04-06 06:28:28,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process