/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_NONE.epf -i ../../../trunk/examples/svcomp/loop-acceleration/diamond_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:12:37,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:12:37,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:12:37,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 20:12:37,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:12:37,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:12:37,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:12:37,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:12:37,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:12:37,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:12:37,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:12:37,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:12:37,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:12:37,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:12:37,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:12:37,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:12:37,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:12:37,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:12:37,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:12:37,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:12:37,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:12:37,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:12:37,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:12:37,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:12:37,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:12:37,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:12:37,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:12:37,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:12:37,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:12:37,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:12:37,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:12:37,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:12:37,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:12:37,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:12:37,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:12:37,555 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:12:37,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:12:37,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:12:37,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:12:37,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:12:37,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:12:37,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:12:37,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:12:37,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:12:37,557 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:12:37,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:12:37,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:12:37,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:12:37,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:12:37,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:12:37,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:12:37,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:12:37,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:12:37,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:12:37,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:12:37,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:12:37,559 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:12:37,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:12:37,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:12:37,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:12:37,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:12:37,561 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:12:37,561 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:12:37,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:12:37,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:12:37,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:12:37,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:12:37,757 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:12:37,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_1-1.c [2022-01-10 20:12:37,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096e5abb4/ff085f84ee1d4a45a556047a4689b9d2/FLAGee3e060e8 [2022-01-10 20:12:38,167 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:12:38,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/diamond_1-1.c [2022-01-10 20:12:38,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096e5abb4/ff085f84ee1d4a45a556047a4689b9d2/FLAGee3e060e8 [2022-01-10 20:12:38,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096e5abb4/ff085f84ee1d4a45a556047a4689b9d2 [2022-01-10 20:12:38,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:12:38,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:12:38,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:12:38,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:12:38,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:12:38,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3b3221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38, skipping insertion in model container [2022-01-10 20:12:38,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:12:38,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:12:38,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/diamond_1-1.c[373,386] [2022-01-10 20:12:38,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:12:38,407 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:12:38,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/diamond_1-1.c[373,386] [2022-01-10 20:12:38,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:12:38,428 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:12:38,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38 WrapperNode [2022-01-10 20:12:38,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:12:38,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:12:38,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:12:38,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:12:38,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,461 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-01-10 20:12:38,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:12:38,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:12:38,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:12:38,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:12:38,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:12:38,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:12:38,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:12:38,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:12:38,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:12:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:38,505 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 20:12:38,549 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 20:12:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:12:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:12:38,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:12:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:12:38,643 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:12:38,652 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:12:38,794 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:12:38,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:12:38,798 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 20:12:38,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:38 BoogieIcfgContainer [2022-01-10 20:12:38,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:12:38,799 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:12:38,799 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:12:38,802 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:12:38,804 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:38" (1/1) ... [2022-01-10 20:12:38,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:12:38 BasicIcfg [2022-01-10 20:12:38,862 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:12:38,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:12:38,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:12:38,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:12:38,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:12:38" (1/4) ... [2022-01-10 20:12:38,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb0230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:38, skipping insertion in model container [2022-01-10 20:12:38,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:38" (2/4) ... [2022-01-10 20:12:38,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb0230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:38, skipping insertion in model container [2022-01-10 20:12:38,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:38" (3/4) ... [2022-01-10 20:12:38,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb0230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:12:38, skipping insertion in model container [2022-01-10 20:12:38,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:12:38" (4/4) ... [2022-01-10 20:12:38,867 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_1-1.cTransformedIcfg [2022-01-10 20:12:38,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:12:38,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 20:12:38,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:12:38,930 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 20:12:38,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 20:12:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 20:12:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:12:38,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:38,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:12:38,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1953496263, now seen corresponding path program 1 times [2022-01-10 20:12:38,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:38,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972335830] [2022-01-10 20:12:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:38,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:39,060 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 20:12:39,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972335830] [2022-01-10 20:12:39,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972335830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:39,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:12:39,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:12:39,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835302292] [2022-01-10 20:12:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:39,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:12:39,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:12:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:12:39,087 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:12:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:39,094 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-01-10 20:12:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:12:39,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-01-10 20:12:39,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:39,101 INFO L225 Difference]: With dead ends: 20 [2022-01-10 20:12:39,101 INFO L226 Difference]: Without dead ends: 8 [2022-01-10 20:12:39,103 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 20:12:39,107 INFO L933 BasicCegarLoop]: 13 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, 13 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 20:12:39,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-01-10 20:12:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-01-10 20:12:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 20:12:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-01-10 20:12:39,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-01-10 20:12:39,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:39,128 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-01-10 20:12:39,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:12:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-01-10 20:12:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:12:39,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:39,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:12:39,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:12:39,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1953526054, now seen corresponding path program 1 times [2022-01-10 20:12:39,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:39,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960421289] [2022-01-10 20:12:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:39,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:39,212 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 20:12:39,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960421289] [2022-01-10 20:12:39,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960421289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:39,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:12:39,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:12:39,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857377684] [2022-01-10 20:12:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:39,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:12:39,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:12:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:39,215 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 20:12:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:39,233 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-01-10 20:12:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:12:39,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-01-10 20:12:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:39,239 INFO L225 Difference]: With dead ends: 14 [2022-01-10 20:12:39,239 INFO L226 Difference]: Without dead ends: 10 [2022-01-10 20:12:39,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:39,241 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:39,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-01-10 20:12:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-01-10 20:12:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 20:12:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-01-10 20:12:39,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-01-10 20:12:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:39,244 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-01-10 20:12:39,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 20:12:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-01-10 20:12:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 20:12:39,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:39,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:39,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:12:39,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash 467229864, now seen corresponding path program 1 times [2022-01-10 20:12:39,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:39,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571014916] [2022-01-10 20:12:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:39,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:39,298 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 20:12:39,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:39,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571014916] [2022-01-10 20:12:39,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571014916] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:12:39,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454447278] [2022-01-10 20:12:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:39,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:39,302 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 20:12:39,354 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 20:12:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:39,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 20:12:39,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:12:39,440 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 20:12:39,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:12:39,561 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 20:12:39,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454447278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:12:39,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:12:39,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 20:12:39,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968266386] [2022-01-10 20:12:39,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:12:39,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:12:39,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:12:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:12:39,567 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 20:12:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:39,660 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2022-01-10 20:12:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:12:39,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 8 [2022-01-10 20:12:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:39,661 INFO L225 Difference]: With dead ends: 21 [2022-01-10 20:12:39,661 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 20:12:39,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:12:39,664 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:39,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 20:12:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-01-10 20:12:39,670 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 20:12:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-01-10 20:12:39,671 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2022-01-10 20:12:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:39,671 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-01-10 20:12:39,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 20:12:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-01-10 20:12:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:12:39,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:39,672 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:39,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:12:39,891 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 20:12:39,891 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:39,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -443577298, now seen corresponding path program 2 times [2022-01-10 20:12:39,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:39,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335059945] [2022-01-10 20:12:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:39,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:40,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:40,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335059945] [2022-01-10 20:12:40,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335059945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:12:40,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779523041] [2022-01-10 20:12:40,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 20:12:40,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:40,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:40,099 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 20:12:40,141 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 20:12:40,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 20:12:40,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 20:12:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 20:12:40,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:12:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:40,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:12:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:40,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779523041] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:12:40,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:12:40,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10] total 19 [2022-01-10 20:12:40,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102366613] [2022-01-10 20:12:40,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:12:40,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 20:12:40,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 20:12:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-01-10 20:12:40,559 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 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 20:12:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:41,221 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2022-01-10 20:12:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 20:12:41,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 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 14 [2022-01-10 20:12:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:41,222 INFO L225 Difference]: With dead ends: 43 [2022-01-10 20:12:41,222 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 20:12:41,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=410, Unknown=0, NotChecked=0, Total=650 [2022-01-10 20:12:41,223 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:41,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 27 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:12:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 20:12:41,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2022-01-10 20:12:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 20:12:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-01-10 20:12:41,228 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2022-01-10 20:12:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:41,228 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-01-10 20:12:41,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 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 20:12:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-01-10 20:12:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 20:12:41,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:41,229 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:41,249 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 20:12:41,442 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 20:12:41,443 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1865515255, now seen corresponding path program 1 times [2022-01-10 20:12:41,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757572066] [2022-01-10 20:12:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:41,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 20:12:41,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:41,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757572066] [2022-01-10 20:12:41,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757572066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:41,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:12:41,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:12:41,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78493072] [2022-01-10 20:12:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:41,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:12:41,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:12:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:41,482 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20:12:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:41,499 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2022-01-10 20:12:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:12:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22 [2022-01-10 20:12:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:41,500 INFO L225 Difference]: With dead ends: 63 [2022-01-10 20:12:41,500 INFO L226 Difference]: Without dead ends: 46 [2022-01-10 20:12:41,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:41,500 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:41,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-10 20:12:41,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2022-01-10 20:12:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 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 20:12:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2022-01-10 20:12:41,508 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 22 [2022-01-10 20:12:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:41,508 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2022-01-10 20:12:41,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20:12:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2022-01-10 20:12:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 20:12:41,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:41,509 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:41,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:12:41,509 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1716995134, now seen corresponding path program 1 times [2022-01-10 20:12:41,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:41,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552244855] [2022-01-10 20:12:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:41,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:41,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:41,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552244855] [2022-01-10 20:12:41,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552244855] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:12:41,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481214316] [2022-01-10 20:12:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:41,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:41,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:41,670 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 20:12:41,672 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 20:12:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:41,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 20:12:41,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:12:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 20:12:41,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:12:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 20:12:42,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481214316] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:12:42,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:12:42,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2022-01-10 20:12:42,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110362747] [2022-01-10 20:12:42,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:12:42,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 20:12:42,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:42,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 20:12:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-01-10 20:12:42,182 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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 20:12:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:42,813 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2022-01-10 20:12:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 20:12:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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 22 [2022-01-10 20:12:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:42,814 INFO L225 Difference]: With dead ends: 82 [2022-01-10 20:12:42,814 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 20:12:42,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=1109, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 20:12:42,815 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:42,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 28 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:12:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 20:12:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-01-10 20:12:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 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 20:12:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-01-10 20:12:42,819 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2022-01-10 20:12:42,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:42,819 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-01-10 20:12:42,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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 20:12:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-01-10 20:12:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 20:12:42,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:42,820 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:42,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 20:12:43,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:43,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash -743133893, now seen corresponding path program 2 times [2022-01-10 20:12:43,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:43,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481839697] [2022-01-10 20:12:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:43,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-01-10 20:12:43,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:43,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481839697] [2022-01-10 20:12:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481839697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:43,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:12:43,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:12:43,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561269651] [2022-01-10 20:12:43,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:43,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:12:43,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:12:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:43,091 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 20:12:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:43,096 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-01-10 20:12:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:12:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 26 [2022-01-10 20:12:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:43,098 INFO L225 Difference]: With dead ends: 27 [2022-01-10 20:12:43,098 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 20:12:43,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:43,098 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:43,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 20:12:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 20:12:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 20:12:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 20:12:43,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-01-10 20:12:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:43,099 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 20:12:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 20:12:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 20:12:43,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 20:12:43,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 20:12:43,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:12:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 20:12:43,358 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 20:12:43,358 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 20:12:43,358 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 23) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| 2))) (let ((.cse0 (not (= .cse1 0)))) (or (and .cse0 (not (< |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 4294967296))) (and (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) .cse0 (< 0 (+ (div (+ (* (- 1) |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) 99) 4294967296) 1))) (and (= .cse1 (mod |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 2)) (= |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| (* 2 (div |ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| 2))))))) [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L861 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 26) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 20:12:43,359 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 20:12:43,361 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-01-10 20:12:43,362 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 20:12:43,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:12:43 BasicIcfg [2022-01-10 20:12:43,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 20:12:43,381 INFO L158 Benchmark]: Toolchain (without parser) took 5190.37ms. Allocated memory was 212.9MB in the beginning and 284.2MB in the end (delta: 71.3MB). Free memory was 158.0MB in the beginning and 250.8MB in the end (delta: -92.8MB). Peak memory consumption was 117.3MB. Max. memory is 8.0GB. [2022-01-10 20:12:43,381 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 212.9MB. Free memory is still 174.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 20:12:43,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.88ms. Allocated memory is still 212.9MB. Free memory was 157.8MB in the beginning and 183.9MB in the end (delta: -26.1MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-01-10 20:12:43,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.93ms. Allocated memory is still 212.9MB. Free memory was 188.1MB in the beginning and 186.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 20:12:43,382 INFO L158 Benchmark]: Boogie Preprocessor took 22.56ms. Allocated memory is still 212.9MB. Free memory was 186.6MB in the beginning and 185.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 20:12:43,382 INFO L158 Benchmark]: RCFGBuilder took 314.20ms. Allocated memory is still 212.9MB. Free memory was 185.5MB in the beginning and 176.6MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 20:12:43,382 INFO L158 Benchmark]: IcfgTransformer took 63.06ms. Allocated memory is still 212.9MB. Free memory was 176.6MB in the beginning and 174.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 20:12:43,382 INFO L158 Benchmark]: TraceAbstraction took 4517.72ms. Allocated memory was 212.9MB in the beginning and 284.2MB in the end (delta: 71.3MB). Free memory was 173.7MB in the beginning and 250.8MB in the end (delta: -77.1MB). Peak memory consumption was 132.4MB. Max. memory is 8.0GB. [2022-01-10 20:12:43,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 212.9MB. Free memory is still 174.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.88ms. Allocated memory is still 212.9MB. Free memory was 157.8MB in the beginning and 183.9MB in the end (delta: -26.1MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.93ms. Allocated memory is still 212.9MB. Free memory was 188.1MB in the beginning and 186.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 22.56ms. Allocated memory is still 212.9MB. Free memory was 186.6MB in the beginning and 185.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 314.20ms. Allocated memory is still 212.9MB. Free memory was 185.5MB in the beginning and 176.6MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 63.06ms. Allocated memory is still 212.9MB. Free memory was 176.6MB in the beginning and 174.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 4517.72ms. Allocated memory was 212.9MB in the beginning and 284.2MB in the end (delta: 71.3MB). Free memory was 173.7MB in the beginning and 250.8MB in the end (delta: -77.1MB). Peak memory consumption was 132.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 446 IncrementalHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 48 mSDtfsCounter, 446 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 31 NumberOfFragments, 49 HoareAnnotationTreeSize, 2 FomulaSimplifications, 245 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 1306 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 1097 SizeOfPredicates, 3 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 272/407 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((~bvslt34(0bv34, ~bvadd16(~sign_extendFrom8To32(~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 99bv65)[64:32]), 1bv34)) && !(y[0:0] == 0bv1)) && ~bvule32(0bv32, x)) || (y[0:0] == x[0:0] && ~bvmul64(2bv32, ~zero_extendFrom31To32(y[31:1])) == y)) || (!(y[0:0] == 0bv1) && !~bvult64(~zero_extendFrom32To33(x), 4294967296bv33)) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-10 20:12:43,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...