/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:33:07,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:33:07,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:33:07,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:33:07,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:33:07,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:33:07,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:33:07,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:33:07,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:33:07,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:33:07,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:33:07,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:33:07,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:33:07,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:33:07,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:33:07,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:33:07,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:33:07,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:33:07,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:33:07,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:33:07,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:33:07,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:33:07,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:33:07,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:33:07,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:33:07,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:33:07,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:33:07,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:33:07,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:33:07,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:33:07,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:33:07,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:33:07,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:33:07,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:33:07,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:33:07,557 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:33:07,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:33:07,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:33:07,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:33:07,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:33:07,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:33:07,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:33:07,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:33:07,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:33:07,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:33:07,560 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:33:07,560 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:33:07,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:33:07,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:33:07,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:33:07,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:33:07,763 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:33:07,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2022-01-10 14:33:07,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ffbbd66/110ce66dde3f41a8b360adf2b2b0202b/FLAG1061fbce4 [2022-01-10 14:33:08,186 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:33:08,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2022-01-10 14:33:08,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ffbbd66/110ce66dde3f41a8b360adf2b2b0202b/FLAG1061fbce4 [2022-01-10 14:33:08,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ffbbd66/110ce66dde3f41a8b360adf2b2b0202b [2022-01-10 14:33:08,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:33:08,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:33:08,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:33:08,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:33:08,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:33:08,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7c9a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08, skipping insertion in model container [2022-01-10 14:33:08,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:33:08,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:33:08,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c[403,416] [2022-01-10 14:33:08,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:33:08,350 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:33:08,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c[403,416] [2022-01-10 14:33:08,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:33:08,380 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:33:08,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08 WrapperNode [2022-01-10 14:33:08,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:33:08,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:33:08,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:33:08,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:33:08,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,400 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-01-10 14:33:08,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:33:08,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:33:08,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:33:08,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:33:08,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:33:08,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:33:08,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:33:08,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:33:08,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:33:08,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:33:08,436 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) [2022-01-10 14:33:08,441 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 [2022-01-10 14:33:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:33:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:33:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:33:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:33:08,502 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:33:08,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:33:08,626 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:33:08,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:33:08,630 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 14:33:08,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:08 BoogieIcfgContainer [2022-01-10 14:33:08,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:33:08,631 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:33:08,632 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:33:08,632 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:33:08,634 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:08" (1/1) ... [2022-01-10 14:33:08,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:33:08 BasicIcfg [2022-01-10 14:33:08,694 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:33:08,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:33:08,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:33:08,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:33:08,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:33:08" (1/4) ... [2022-01-10 14:33:08,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fce930b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:33:08, skipping insertion in model container [2022-01-10 14:33:08,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:08" (2/4) ... [2022-01-10 14:33:08,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fce930b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:33:08, skipping insertion in model container [2022-01-10 14:33:08,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:08" (3/4) ... [2022-01-10 14:33:08,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fce930b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:33:08, skipping insertion in model container [2022-01-10 14:33:08,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:33:08" (4/4) ... [2022-01-10 14:33:08,699 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt5.cTransformedIcfg [2022-01-10 14:33:08,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:33:08,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:33:08,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:33:08,733 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-01-10 14:33:08,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:33:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:08,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 14:33:08,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:33:08,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:33:08,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:33:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:33:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1786239997, now seen corresponding path program 1 times [2022-01-10 14:33:08,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:33:08,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361937368] [2022-01-10 14:33:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:08,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:33:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:08,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:33:08,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361937368] [2022-01-10 14:33:08,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361937368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:33:08,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:33:08,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:33:08,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362010681] [2022-01-10 14:33:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:33:08,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:33:08,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:33:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:33:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:33:08,940 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:33:08,950 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-01-10 14:33:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:33:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-10 14:33:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:33:08,962 INFO L225 Difference]: With dead ends: 25 [2022-01-10 14:33:08,963 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 14:33:08,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:33:08,970 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:33:08,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:33:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 14:33:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 14:33:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-01-10 14:33:08,996 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2022-01-10 14:33:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:33:08,996 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-01-10 14:33:08,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2022-01-10 14:33:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 14:33:08,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:33:08,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:33:08,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:33:08,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:33:09,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:33:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1786210206, now seen corresponding path program 1 times [2022-01-10 14:33:09,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:33:09,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74559140] [2022-01-10 14:33:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:09,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:33:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:09,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:33:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74559140] [2022-01-10 14:33:09,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74559140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:33:09,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:33:09,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:33:09,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943933551] [2022-01-10 14:33:09,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:33:09,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:33:09,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:33:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:33:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:33:09,156 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:33:09,234 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-01-10 14:33:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:33:09,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-10 14:33:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:33:09,236 INFO L225 Difference]: With dead ends: 27 [2022-01-10 14:33:09,236 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 14:33:09,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:33:09,237 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:33:09,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:33:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 14:33:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-10 14:33:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-01-10 14:33:09,241 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2022-01-10 14:33:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:33:09,241 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-01-10 14:33:09,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-01-10 14:33:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:33:09,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:33:09,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:33:09,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:33:09,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:33:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:33:09,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1720698990, now seen corresponding path program 1 times [2022-01-10 14:33:09,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:33:09,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438999296] [2022-01-10 14:33:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:09,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:33:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:09,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:33:09,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438999296] [2022-01-10 14:33:09,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438999296] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:33:09,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009636158] [2022-01-10 14:33:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:09,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:33:09,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:33:09,465 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) [2022-01-10 14:33:09,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:33:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:09,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-10 14:33:09,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:33:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:10,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:33:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:10,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009636158] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:33:10,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:33:10,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-10 14:33:10,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25384433] [2022-01-10 14:33:10,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:33:10,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 14:33:10,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:33:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 14:33:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-01-10 14:33:10,289 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:10,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:33:10,535 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2022-01-10 14:33:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 14:33:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 14:33:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:33:10,536 INFO L225 Difference]: With dead ends: 37 [2022-01-10 14:33:10,536 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 14:33:10,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-10 14:33:10,537 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:33:10,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 37 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:33:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 14:33:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 14:33:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 14:33:10,542 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2022-01-10 14:33:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:33:10,543 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 14:33:10,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 14:33:10,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 14:33:10,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:33:10,543 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:33:10,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 14:33:10,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:33:10,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:33:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:33:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash 354343426, now seen corresponding path program 1 times [2022-01-10 14:33:10,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:33:10,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141757142] [2022-01-10 14:33:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:10,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:33:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:10,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:33:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141757142] [2022-01-10 14:33:10,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141757142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:33:10,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989941016] [2022-01-10 14:33:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:10,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:33:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:33:10,860 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) [2022-01-10 14:33:10,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:33:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:10,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 14:33:10,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:33:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:11,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:33:13,303 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (or (not (< .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (< 0 (mod .cse0 5)))) is different from false [2022-01-10 14:33:21,912 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (or (not (< .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (< 0 (mod .cse0 5)) (not (< |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)))) is different from false [2022-01-10 14:33:28,310 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (let ((.cse1 (mod (+ .cse0 1) 4294967296))) (or (not (< .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (not (< .cse1 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (< 0 (mod .cse1 5))))) is different from false [2022-01-10 14:33:34,664 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (let ((.cse1 (mod (+ .cse0 1) 4294967296))) (or (<= |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| .cse0) (< 0 (mod .cse1 5)) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| .cse1)))) is different from false [2022-01-10 14:33:43,195 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (let ((.cse0 (mod (+ .cse1 1) 4294967296))) (or (<= c_~SIZE~0Int .cse0) (< 0 (mod .cse0 5)) (<= c_~SIZE~0Int .cse1)))) is different from false [2022-01-10 14:33:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-01-10 14:33:43,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989941016] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:33:43,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:33:43,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2022-01-10 14:33:43,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459515509] [2022-01-10 14:33:43,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:33:43,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 14:33:43,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:33:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 14:33:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=191, Unknown=5, NotChecked=160, Total=420 [2022-01-10 14:33:43,505 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:45,655 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_~SIZE~0Int 20000001) (let ((.cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (let ((.cse0 (mod (+ .cse1 1) 4294967296))) (or (<= c_~SIZE~0Int .cse0) (< 0 (mod .cse0 5)) (<= c_~SIZE~0Int .cse1)))) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~v3~0#1Int|) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int|) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~v3~0#1Int| 0) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 0)) is different from false [2022-01-10 14:33:47,793 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~v3~0#1Int|) (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (let ((.cse1 (mod (+ .cse0 1) 4294967296))) (or (<= |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| .cse0) (< 0 (mod .cse1 5)) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| .cse1)))) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int|) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~v3~0#1Int| 0) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 0) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 20000001)) is different from false [2022-01-10 14:33:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:33:50,107 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2022-01-10 14:33:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 14:33:50,108 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 14:33:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:33:50,108 INFO L225 Difference]: With dead ends: 49 [2022-01-10 14:33:50,108 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 14:33:50,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=68, Invalid=193, Unknown=7, NotChecked=238, Total=506 [2022-01-10 14:33:50,109 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 68 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:33:50,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 34 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 162 Invalid, 0 Unknown, 132 Unchecked, 0.2s Time] [2022-01-10 14:33:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 14:33:50,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-01-10 14:33:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-01-10 14:33:50,113 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2022-01-10 14:33:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:33:50,113 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-01-10 14:33:50,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:33:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-01-10 14:33:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 14:33:50,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:33:50,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:33:50,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 14:33:50,315 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,SelfDestructingSolverStorable3 [2022-01-10 14:33:50,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:33:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:33:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1694973875, now seen corresponding path program 1 times [2022-01-10 14:33:50,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:33:50,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362821256] [2022-01-10 14:33:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:50,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:33:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 14:33:50,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:33:50,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362821256] [2022-01-10 14:33:50,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362821256] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:33:50,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779999265] [2022-01-10 14:33:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:33:50,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:33:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:33:50,510 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) [2022-01-10 14:33:50,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:33:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:33:50,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 14:33:50,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:33:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:33:52,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:34:26,966 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1))) (let ((.cse0 (mod .cse1 4294967296))) (or (not (< .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (= (mod .cse1 4) 0) (= (mod .cse0 3) 0) (let ((.cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 1) 4294967296))) (let ((.cse6 (+ |c_ULTIMATE.start_ULTIMATE.start_main_~v4~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~v3~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~k~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| .cse4)) (.cse3 (mod (+ .cse0 1) 4294967296))) (let ((.cse5 (< .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (.cse2 (* (div .cse6 4294967296) 4294967296))) (and (or (< (+ .cse2 .cse3) (+ |c_ULTIMATE.start_ULTIMATE.start_main_~v4~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~v3~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~k~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| .cse4 1)) .cse5) (or .cse5 (<= .cse6 (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| .cse2))))))) (not (<= (mod .cse1 2) 0))))) is different from true