./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/eq1.c --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-invariants/eq1.c -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 24dbf0b61fcc2c4b26047f70e4e204fe2300efa4 ........................................................................................................................................................................................................................................................................................................................................ 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 03:52:35,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 03:52:35,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 03:52:35,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 03:52:35,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 03:52:35,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 03:52:35,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 03:52:35,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 03:52:35,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 03:52:35,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 03:52:35,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 03:52:35,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 03:52:35,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 03:52:35,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 03:52:35,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 03:52:35,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 03:52:35,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 03:52:35,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 03:52:35,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 03:52:35,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 03:52:35,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 03:52:35,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 03:52:35,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 03:52:35,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 03:52:35,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 03:52:35,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 03:52:35,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 03:52:35,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 03:52:35,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 03:52:35,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 03:52:35,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 03:52:35,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 03:52:35,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 03:52:35,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 03:52:35,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 03:52:35,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 03:52:35,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 03:52:35,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 03:52:35,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 03:52:35,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 03:52:35,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 03:52:35,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 03:52:35,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 03:52:35,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 03:52:35,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 03:52:35,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 03:52:35,345 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 03:52:35,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 03:52:35,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 03:52:35,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 03:52:35,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 03:52:35,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 03:52:35,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 03:52:35,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 03:52:35,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 03:52:35,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 03:52:35,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24dbf0b61fcc2c4b26047f70e4e204fe2300efa4 [2021-07-05 03:52:35,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 03:52:35,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 03:52:35,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 03:52:35,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 03:52:35,629 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 03:52:35,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/eq1.c [2021-07-05 03:52:35,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d13405c7/5e6babd46ce14851a6f51736c8aaf48b/FLAGffd60ddbc [2021-07-05 03:52:36,026 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 03:52:36,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/eq1.c [2021-07-05 03:52:36,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d13405c7/5e6babd46ce14851a6f51736c8aaf48b/FLAGffd60ddbc [2021-07-05 03:52:36,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d13405c7/5e6babd46ce14851a6f51736c8aaf48b [2021-07-05 03:52:36,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 03:52:36,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 03:52:36,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 03:52:36,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 03:52:36,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 03:52:36,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e89ceac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36, skipping insertion in model container [2021-07-05 03:52:36,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 03:52:36,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 03:52:36,584 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-invariants/eq1.c[364,377] [2021-07-05 03:52:36,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 03:52:36,597 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 03:52:36,611 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-invariants/eq1.c[364,377] [2021-07-05 03:52:36,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 03:52:36,645 INFO L208 MainTranslator]: Completed translation [2021-07-05 03:52:36,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36 WrapperNode [2021-07-05 03:52:36,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 03:52:36,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 03:52:36,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 03:52:36,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 03:52:36,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 03:52:36,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 03:52:36,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 03:52:36,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 03:52:36,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 03:52:36,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 03:52:36,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 03:52:36,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 03:52:36,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (1/1) ... [2021-07-05 03:52:36,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 03:52:36,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 03:52:36,713 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 03:52:36,731 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 03:52:36,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 03:52:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 03:52:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 03:52:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 03:52:36,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 03:52:36,962 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-05 03:52:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:52:36 BoogieIcfgContainer [2021-07-05 03:52:36,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 03:52:36,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 03:52:36,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 03:52:36,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 03:52:36,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 03:52:36" (1/3) ... [2021-07-05 03:52:36,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118becee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:52:36, skipping insertion in model container [2021-07-05 03:52:36,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:52:36" (2/3) ... [2021-07-05 03:52:36,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118becee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:52:36, skipping insertion in model container [2021-07-05 03:52:36,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:52:36" (3/3) ... [2021-07-05 03:52:36,968 INFO L111 eAbstractionObserver]: Analyzing ICFG eq1.c [2021-07-05 03:52:36,972 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 03:52:36,972 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 03:52:37,008 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 03:52:37,025 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 03:52:37,026 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 03:52:37,034 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 03:52:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 03:52:37,037 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:52:37,037 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 03:52:37,038 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:52:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:52:37,042 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-07-05 03:52:37,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:52:37,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494880171] [2021-07-05 03:52:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:52:37,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:52:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:52:37,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:52:37,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:52:37,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:52:37,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:52:37,134 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 03:52:37,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:52:37,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494880171] [2021-07-05 03:52:37,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494880171] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:52:37,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:52:37,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 03:52:37,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473111203] [2021-07-05 03:52:37,143 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 03:52:37,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:52:37,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 03:52:37,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 03:52:37,157 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:52:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:52:37,166 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-07-05 03:52:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 03:52:37,167 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-05 03:52:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:52:37,173 INFO L225 Difference]: With dead ends: 20 [2021-07-05 03:52:37,173 INFO L226 Difference]: Without dead ends: 8 [2021-07-05 03:52:37,175 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 03:52:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-07-05 03:52:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-07-05 03:52:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:52:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-07-05 03:52:37,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-07-05 03:52:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:52:37,195 INFO L442 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-07-05 03:52:37,195 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:52:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-07-05 03:52:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 03:52:37,196 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 03:52:37,196 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 03:52:37,196 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 03:52:37,196 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 03:52:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 03:52:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2021-07-05 03:52:37,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 03:52:37,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059819631] [2021-07-05 03:52:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 03:52:37,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 03:52:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 03:52:37,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:52:37,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:52:37,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:52:37,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 03:52:37,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:52:37,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 03:52:37,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 03:52:37,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 03:52:37,360 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 03:52:37,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 03:52:37,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059819631] [2021-07-05 03:52:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059819631] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 03:52:37,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 03:52:37,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 03:52:37,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134364517] [2021-07-05 03:52:37,363 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 03:52:37,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 03:52:37,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 03:52:37,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 03:52:37,365 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:52:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 03:52:37,397 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-07-05 03:52:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 03:52:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-05 03:52:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 03:52:37,404 INFO L225 Difference]: With dead ends: 8 [2021-07-05 03:52:37,405 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 03:52:37,405 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 03:52:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 03:52:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 03:52:37,406 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 03:52:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 03:52:37,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-05 03:52:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 03:52:37,406 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 03:52:37,406 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 03:52:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 03:52:37,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 03:52:37,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 03:52:37,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:52:37,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:52:37,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 03:52:37,437 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 03:52:37,438 INFO L762 garLoopResultBuilder]: For program point L17(lines 17 21) no Hoare annotation was computed. [2021-07-05 03:52:37,441 INFO L758 garLoopResultBuilder]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~w~0) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) [2021-07-05 03:52:37,441 INFO L762 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-07-05 03:52:37,441 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 03:52:37,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 03:52:37,442 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 03:52:37,442 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-07-05 03:52:37,442 INFO L765 garLoopResultBuilder]: At program point L24(lines 11 25) the Hoare annotation is: true [2021-07-05 03:52:37,443 INFO L762 garLoopResultBuilder]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2021-07-05 03:52:37,443 INFO L762 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-07-05 03:52:37,448 INFO L765 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-07-05 03:52:37,448 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 03:52:37,448 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 03:52:37,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 03:52:37 BoogieIcfgContainer [2021-07-05 03:52:37,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 03:52:37,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 03:52:37,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 03:52:37,465 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 03:52:37,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:52:36" (3/4) ... [2021-07-05 03:52:37,467 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 03:52:37,473 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-07-05 03:52:37,473 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-07-05 03:52:37,473 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-05 03:52:37,473 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 03:52:37,473 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 03:52:37,496 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 03:52:37,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 03:52:37,497 INFO L168 Benchmark]: Toolchain (without parser) took 1022.17 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.6 MB in the beginning and 39.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2021-07-05 03:52:37,497 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:52:37,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.44 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 48.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 03:52:37,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.41 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:52:37,498 INFO L168 Benchmark]: Boogie Preprocessor took 12.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 03:52:37,499 INFO L168 Benchmark]: RCFGBuilder took 283.00 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 34.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 03:52:37,499 INFO L168 Benchmark]: TraceAbstraction took 500.26 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 33.8 MB in the beginning and 42.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-07-05 03:52:37,499 INFO L168 Benchmark]: Witness Printer took 31.75 ms. Allocated memory is still 81.8 MB. Free memory was 42.5 MB in the beginning and 39.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-05 03:52:37,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 169.44 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 48.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 19.41 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.00 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 34.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 500.26 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 33.8 MB in the beginning and 42.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Witness Printer took 31.75 ms. Allocated memory is still 81.8 MB. Free memory was 42.5 MB in the beginning and 39.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 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: 7]: 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: 444.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.5ms, AutomataDifference: 73.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 28.7ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 2 SDslu, 5 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 17.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 8.4ms SsaConstructionTime, 79.8ms SatisfiabilityAnalysisTime, 117.4ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: 16]: Loop Invariant Derived loop invariant: x == w && z == y - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-07-05 03:52:37,541 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...