./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gsv2008.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad7102f2457c0f5542a3d448f84e7fa5158fff18 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 03:01:46,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 03:01:46,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 03:01:46,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 03:01:46,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 03:01:46,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 03:01:46,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 03:01:46,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 03:01:46,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 03:01:46,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 03:01:46,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 03:01:46,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 03:01:46,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 03:01:46,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 03:01:46,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 03:01:46,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 03:01:46,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 03:01:46,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 03:01:46,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 03:01:46,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 03:01:46,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 03:01:46,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 03:01:46,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 03:01:46,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 03:01:46,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 03:01:46,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 03:01:46,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 03:01:46,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 03:01:46,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 03:01:46,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 03:01:46,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 03:01:46,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 03:01:46,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 03:01:46,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 03:01:46,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 03:01:46,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 03:01:46,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 03:01:46,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 03:01:46,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 03:01:46,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 03:01:46,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 03:01:46,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 03:01:46,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 03:01:46,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 03:01:46,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 03:01:46,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 03:01:46,778 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 03:01:46,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 03:01:46,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 03:01:46,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 03:01:46,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 03:01:46,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 03:01:46,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 03:01:46,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 03:01:46,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 03:01:46,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 03:01:46,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 03:01:46,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 03:01:46,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 03:01:46,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 03:01:46,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 03:01:46,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 03:01:46,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 03:01:46,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 03:01:46,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 03:01:46,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 03:01:46,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 03:01:46,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 03:01:46,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 03:01:46,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 03:01:46,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7102f2457c0f5542a3d448f84e7fa5158fff18 [2021-07-05 03:01:47,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 03:01:47,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 03:01:47,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 03:01:47,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 03:01:47,159 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 03:01:47,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.i [2021-07-05 03:01:47,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3606968bd/53e88743a57d49e5b1fb62d3ba0f0175/FLAG0d06c3c2e [2021-07-05 03:01:47,632 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 03:01:47,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i [2021-07-05 03:01:47,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3606968bd/53e88743a57d49e5b1fb62d3ba0f0175/FLAG0d06c3c2e [2021-07-05 03:01:47,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3606968bd/53e88743a57d49e5b1fb62d3ba0f0175 [2021-07-05 03:01:47,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 03:01:47,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 03:01:47,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 03:01:47,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 03:01:47,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 03:01:47,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cf0281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47, skipping insertion in model container [2021-07-05 03:01:47,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 03:01:47,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 03:01:47,826 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2021-07-05 03:01:47,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 03:01:47,842 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 03:01:47,857 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2021-07-05 03:01:47,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 03:01:47,881 INFO L208 MainTranslator]: Completed translation [2021-07-05 03:01:47,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47 WrapperNode [2021-07-05 03:01:47,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 03:01:47,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 03:01:47,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 03:01:47,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 03:01:47,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 03:01:47,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 03:01:47,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 03:01:47,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 03:01:47,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 03:01:47,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 03:01:47,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 03:01:47,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 03:01:47,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (1/1) ... [2021-07-05 03:01:47,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 03:01:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 03:01:47,966 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) [2021-07-05 03:01:47,993 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 [2021-07-05 03:01:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 03:01:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 03:01:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 03:01:48,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 03:01:48,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 03:01:48,217 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-05 03:01:48,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:01:48 BoogieIcfgContainer [2021-07-05 03:01:48,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 03:01:48,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 03:01:48,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 03:01:48,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 03:01:48,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 03:01:47" (1/3) ... [2021-07-05 03:01:48,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749597e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:01:48, skipping insertion in model container [2021-07-05 03:01:48,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:01:47" (2/3) ... [2021-07-05 03:01:48,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749597e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:01:48, skipping insertion in model container [2021-07-05 03:01:48,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:01:48" (3/3) ... [2021-07-05 03:01:48,226 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2021-07-05 03:01:48,232 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 03:01:48,232 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 03:01:48,273 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 03:01:48,279 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 03:01:48,279 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 03:01:48,290 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) [2021-07-05 03:01:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 03:01:48,292 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:01:48,292 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:01:48,293 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:01:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:01:48,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089480, now seen corresponding path program 1 times [2021-07-05 03:01:48,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:01:48,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535764265] [2021-07-05 03:01:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:01:48,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:01:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:01:48,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:01:48,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:01:48,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535764265] [2021-07-05 03:01:48,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535764265] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:01:48,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:01:48,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 03:01:48,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052732616] [2021-07-05 03:01:48,424 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 03:01:48,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:01:48,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 03:01:48,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 03:01:48,439 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 3.5) 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) [2021-07-05 03:01:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:01:48,451 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-07-05 03:01:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 03:01:48,452 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 [2021-07-05 03:01:48,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:01:48,458 INFO L225 Difference]: With dead ends: 20 [2021-07-05 03:01:48,458 INFO L226 Difference]: Without dead ends: 8 [2021-07-05 03:01:48,460 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 03:01:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-07-05 03:01:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-07-05 03:01:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-07-05 03:01:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-07-05 03:01:48,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-07-05 03:01:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:01:48,483 INFO L442 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-07-05 03:01:48,483 INFO L443 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) [2021-07-05 03:01:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-07-05 03:01:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 03:01:48,484 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:01:48,484 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:01:48,485 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 03:01:48,485 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:01:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:01:48,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970316, now seen corresponding path program 1 times [2021-07-05 03:01:48,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:01:48,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910871493] [2021-07-05 03:01:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:01:48,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:01:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:01:48,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:01:48,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:01:48,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910871493] [2021-07-05 03:01:48,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910871493] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:01:48,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:01:48,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 03:01:48,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499528735] [2021-07-05 03:01:48,576 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 03:01:48,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:01:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 03:01:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 03:01:48,577 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-07-05 03:01:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:01:48,598 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-07-05 03:01:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 03:01:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2021-07-05 03:01:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:01:48,599 INFO L225 Difference]: With dead ends: 13 [2021-07-05 03:01:48,599 INFO L226 Difference]: Without dead ends: 9 [2021-07-05 03:01:48,600 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 03:01:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-07-05 03:01:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-07-05 03:01:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-07-05 03:01:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-07-05 03:01:48,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-07-05 03:01:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:01:48,602 INFO L442 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-07-05 03:01:48,602 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-07-05 03:01:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-07-05 03:01:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-05 03:01:48,603 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:01:48,603 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:01:48,603 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 03:01:48,603 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:01:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:01:48,604 INFO L82 PathProgramCache]: Analyzing trace with hash 183170324, now seen corresponding path program 1 times [2021-07-05 03:01:48,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:01:48,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565938899] [2021-07-05 03:01:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:01:48,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:01:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:01:48,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:48,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 03:01:48,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:01:48,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:01:48,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565938899] [2021-07-05 03:01:48,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565938899] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 03:01:48,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016658325] [2021-07-05 03:01:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:01:48,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 03:01:48,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 03:01:48,685 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) [2021-07-05 03:01:48,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-05 03:01:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:01:48,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-05 03:01:48,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 03:01:48,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:48,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:48,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-05 03:01:48,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:48,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:48,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-05 03:01:48,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:48,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-05 03:01:48,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:48,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-05 03:01:48,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 03:01:48,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:48,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:48,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:01:48,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:48,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:01:48,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:48,903 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-07-05 03:01:48,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:48,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:48,915 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-05 03:01:48,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:48,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:01:48,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016658325] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 03:01:48,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-05 03:01:48,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-07-05 03:01:48,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244882525] [2021-07-05 03:01:48,920 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 03:01:48,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:01:48,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 03:01:48,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-05 03:01:48,921 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-07-05 03:01:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:01:48,967 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-07-05 03:01:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 03:01:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) Word has length 8 [2021-07-05 03:01:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:01:48,968 INFO L225 Difference]: With dead ends: 14 [2021-07-05 03:01:48,968 INFO L226 Difference]: Without dead ends: 10 [2021-07-05 03:01:48,969 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-05 03:01:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-07-05 03:01:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-07-05 03:01:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-07-05 03:01:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-07-05 03:01:48,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-07-05 03:01:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:01:48,971 INFO L442 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-07-05 03:01:48,971 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-07-05 03:01:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-07-05 03:01:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 03:01:48,972 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:01:48,972 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:01:48,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-05 03:01:49,181 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 03:01:49,181 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:01:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:01:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978124, now seen corresponding path program 2 times [2021-07-05 03:01:49,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:01:49,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513264275] [2021-07-05 03:01:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:01:49,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:01:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:01:49,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 03:01:49,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:49,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 03:01:49,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:01:49,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:01:49,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513264275] [2021-07-05 03:01:49,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513264275] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 03:01:49,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836428901] [2021-07-05 03:01:49,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-07-05 03:01:49,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 03:01:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 03:01:49,317 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) [2021-07-05 03:01:49,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-07-05 03:01:49,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-05 03:01:49,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-05 03:01:49,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-05 03:01:49,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 03:01:49,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:49,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:49,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-05 03:01:49,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:49,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:49,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-05 03:01:49,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:49,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-05 03:01:49,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:49,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:49,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-05 03:01:49,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-05 03:01:49,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-05 03:01:49,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-05 03:01:49,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:49,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-05 03:01:49,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 03:01:49,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:01:49,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 03:01:49,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:01:49,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 03:01:49,478 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-07-05 03:01:49,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:49,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:49,494 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-05 03:01:49,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 03:01:49,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836428901] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 03:01:49,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-05 03:01:49,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-05 03:01:49,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844297499] [2021-07-05 03:01:49,504 INFO L425 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-05 03:01:49,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:01:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-05 03:01:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-05 03:01:49,506 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-07-05 03:01:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:01:49,558 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-07-05 03:01:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-05 03:01:49,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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 9 [2021-07-05 03:01:49,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:01:49,559 INFO L225 Difference]: With dead ends: 15 [2021-07-05 03:01:49,559 INFO L226 Difference]: Without dead ends: 11 [2021-07-05 03:01:49,559 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-07-05 03:01:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-07-05 03:01:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-07-05 03:01:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-07-05 03:01:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-07-05 03:01:49,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-07-05 03:01:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:01:49,562 INFO L442 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-07-05 03:01:49,562 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-07-05 03:01:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-07-05 03:01:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-05 03:01:49,563 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:01:49,563 INFO L525 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 03:01:49,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-07-05 03:01:49,776 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-07-05 03:01:49,777 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:01:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:01:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash -13685740, now seen corresponding path program 3 times [2021-07-05 03:01:49,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:01:49,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946728312] [2021-07-05 03:01:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:01:49,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:01:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:01:49,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 03:01:49,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 03:01:49,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 03:01:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:01:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:01:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-05 03:01:49,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:01:49,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946728312] [2021-07-05 03:01:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946728312] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:01:49,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:01:49,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 03:01:49,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523823882] [2021-07-05 03:01:49,822 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 03:01:49,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:01:49,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 03:01:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 03:01:49,823 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-07-05 03:01:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:01:49,855 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-07-05 03:01:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 03:01:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) Word has length 10 [2021-07-05 03:01:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:01:49,856 INFO L225 Difference]: With dead ends: 11 [2021-07-05 03:01:49,856 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 03:01:49,856 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-05 03:01:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 03:01:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 03:01:49,857 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) [2021-07-05 03:01:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 03:01:49,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-05 03:01:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:01:49,857 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 03:01:49,857 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-07-05 03:01:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 03:01:49,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 03:01:49,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 03:01:49,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:01:49,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:01:49,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:01:49,882 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 03:01:49,882 INFO L758 garLoopResultBuilder]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~x~0 50) 0) (<= (+ ULTIMATE.start_main_~x~0 2) ULTIMATE.start_main_~y~0)) [2021-07-05 03:01:49,882 INFO L762 garLoopResultBuilder]: For program point L29-3(lines 29 32) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L765 garLoopResultBuilder]: At program point L34(lines 24 35) the Hoare annotation is: true [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-07-05 03:01:49,883 INFO L762 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-07-05 03:01:49,884 INFO L765 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-07-05 03:01:49,884 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-05 03:01:49,884 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 03:01:49,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 03:01:49 BoogieIcfgContainer [2021-07-05 03:01:49,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 03:01:49,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 03:01:49,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 03:01:49,898 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 03:01:49,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:01:48" (3/4) ... [2021-07-05 03:01:49,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 03:01:49,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-07-05 03:01:49,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-05 03:01:49,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 03:01:49,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 03:01:49,931 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 03:01:49,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 03:01:49,932 INFO L168 Benchmark]: Toolchain (without parser) took 2272.73 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.7 MB in the beginning and 43.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-07-05 03:01:49,932 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory is still 33.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:01:49,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.54 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 45.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-07-05 03:01:49,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.89 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:01:49,933 INFO L168 Benchmark]: Boogie Preprocessor took 25.14 ms. Allocated memory is still 62.9 MB. Free memory was 44.3 MB in the beginning and 43.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:01:49,933 INFO L168 Benchmark]: RCFGBuilder took 283.44 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 32.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 03:01:49,934 INFO L168 Benchmark]: TraceAbstraction took 1677.35 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.0 MB in the beginning and 45.9 MB in the end (delta: -13.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:01:49,934 INFO L168 Benchmark]: Witness Printer took 33.42 ms. Allocated memory is still 75.5 MB. Free memory was 45.9 MB in the beginning and 43.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 03:01:49,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory is still 33.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.54 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 45.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.89 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.14 ms. Allocated memory is still 62.9 MB. Free memory was 44.3 MB in the beginning and 43.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.44 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 32.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1677.35 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.0 MB in the beginning and 45.9 MB in the end (delta: -13.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 33.42 ms. Allocated memory is still 75.5 MB. Free memory was 45.9 MB in the beginning and 43.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1615.1ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 7.4ms, AutomataDifference: 195.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 21.6ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 9 SDslu, 41 SDs, 0 SdLazy, 71 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 172.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 11.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 22.8ms SsaConstructionTime, 146.1ms SatisfiabilityAnalysisTime, 542.9ms InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 6 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 6/14 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: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: x + 50 <= 0 || x + 2 <= y - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-07-05 03:01:49,971 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...