./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/list-properties/splice-1.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:52:38,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:52:38,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:52:38,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:52:38,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:52:38,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:52:38,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:52:38,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:52:38,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:52:38,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:52:38,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:52:38,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:52:38,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:52:38,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:52:38,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:52:38,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:52:38,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:52:38,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:52:38,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:52:38,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:52:38,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:52:38,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:52:38,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:52:38,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:52:38,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:52:38,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:52:38,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:52:38,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:52:38,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:52:38,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:52:38,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:52:38,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:52:38,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:52:38,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:52:38,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:52:38,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:52:38,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:52:38,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:52:38,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:52:38,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:52:38,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:52:38,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:52:38,673 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:52:38,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:52:38,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:52:38,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:52:38,675 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:52:38,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:52:38,675 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:52:38,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:52:38,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:52:38,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:52:38,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:52:38,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:52:38,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:52:38,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:52:38,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:52:38,677 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:52:38,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:52:38,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:52:38,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:52:38,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:52:38,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:52:38,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:52:38,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:52:38,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:52:38,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:52:38,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:52:38,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:52:38,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:52:38,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 [2019-11-27 23:52:39,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:52:39,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:52:39,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:52:39,059 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:52:39,060 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:52:39,062 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2019-11-27 23:52:39,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5aabce49/81822f6620524f54a8a853cf38e63cd4/FLAG1d7757ecf [2019-11-27 23:52:39,707 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:52:39,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2019-11-27 23:52:39,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5aabce49/81822f6620524f54a8a853cf38e63cd4/FLAG1d7757ecf [2019-11-27 23:52:39,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5aabce49/81822f6620524f54a8a853cf38e63cd4 [2019-11-27 23:52:39,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:52:40,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:52:40,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:52:40,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:52:40,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:52:40,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:52:39" (1/1) ... [2019-11-27 23:52:40,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7261e065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40, skipping insertion in model container [2019-11-27 23:52:40,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:52:39" (1/1) ... [2019-11-27 23:52:40,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:52:40,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:52:40,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:52:40,461 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:52:40,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:52:40,591 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:52:40,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40 WrapperNode [2019-11-27 23:52:40,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:52:40,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:52:40,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:52:40,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:52:40,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:52:40,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:52:40,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:52:40,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:52:40,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... [2019-11-27 23:52:40,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:52:40,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:52:40,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:52:40,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:52:40,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:52:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:52:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:52:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 23:52:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-27 23:52:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-27 23:52:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:52:40,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:52:41,117 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:52:41,117 INFO L297 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-27 23:52:41,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:52:41 BoogieIcfgContainer [2019-11-27 23:52:41,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:52:41,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:52:41,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:52:41,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:52:41,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:52:39" (1/3) ... [2019-11-27 23:52:41,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b41f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:52:41, skipping insertion in model container [2019-11-27 23:52:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:40" (2/3) ... [2019-11-27 23:52:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b41f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:52:41, skipping insertion in model container [2019-11-27 23:52:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:52:41" (3/3) ... [2019-11-27 23:52:41,127 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2019-11-27 23:52:41,137 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:52:41,144 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:52:41,156 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:52:41,175 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:52:41,175 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:52:41,175 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:52:41,175 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:52:41,176 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:52:41,177 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:52:41,177 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:52:41,177 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:52:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-27 23:52:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-27 23:52:41,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:41,198 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:52:41,198 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2019-11-27 23:52:41,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:41,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771506224] [2019-11-27 23:52:41,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:52:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:52:41,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771506224] [2019-11-27 23:52:41,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:52:41,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:52:41,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772412184] [2019-11-27 23:52:41,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:52:41,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:52:41,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:52:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:52:41,361 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-27 23:52:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:52:41,383 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2019-11-27 23:52:41,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:52:41,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-27 23:52:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:52:41,397 INFO L225 Difference]: With dead ends: 46 [2019-11-27 23:52:41,397 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:52:41,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:52:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:52:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-27 23:52:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 23:52:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-11-27 23:52:41,439 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2019-11-27 23:52:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:52:41,440 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-11-27 23:52:41,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:52:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-11-27 23:52:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:52:41,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:41,441 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:52:41,442 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:41,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2019-11-27 23:52:41,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:41,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882186523] [2019-11-27 23:52:41,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:52:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:52:41,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882186523] [2019-11-27 23:52:41,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:52:41,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:52:41,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583421865] [2019-11-27 23:52:41,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:52:41,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:52:41,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:52:41,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:52:41,590 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2019-11-27 23:52:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:52:41,675 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-27 23:52:41,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:52:41,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:52:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:52:41,676 INFO L225 Difference]: With dead ends: 40 [2019-11-27 23:52:41,677 INFO L226 Difference]: Without dead ends: 33 [2019-11-27 23:52:41,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:52:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-27 23:52:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-27 23:52:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 23:52:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-27 23:52:41,684 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2019-11-27 23:52:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:52:41,684 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-27 23:52:41,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:52:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-27 23:52:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:52:41,685 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:41,686 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:52:41,686 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:41,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:41,686 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2019-11-27 23:52:41,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:41,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186906787] [2019-11-27 23:52:41,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:52:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:52:41,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186906787] [2019-11-27 23:52:41,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:52:41,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:52:41,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984167309] [2019-11-27 23:52:41,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:52:41,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:52:41,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:52:41,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:52:41,785 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2019-11-27 23:52:41,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:52:41,860 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2019-11-27 23:52:41,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:52:41,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-27 23:52:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:52:41,864 INFO L225 Difference]: With dead ends: 47 [2019-11-27 23:52:41,864 INFO L226 Difference]: Without dead ends: 39 [2019-11-27 23:52:41,865 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:52:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-27 23:52:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-11-27 23:52:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-27 23:52:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-27 23:52:41,885 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2019-11-27 23:52:41,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:52:41,886 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-27 23:52:41,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:52:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2019-11-27 23:52:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-27 23:52:41,888 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:41,888 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:52:41,889 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2019-11-27 23:52:41,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:41,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735921823] [2019-11-27 23:52:41,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:52:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:52:41,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735921823] [2019-11-27 23:52:41,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:52:41,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-27 23:52:41,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296227645] [2019-11-27 23:52:41,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:52:41,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:52:41,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:52:41,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:52:41,981 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 6 states. [2019-11-27 23:52:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:52:42,180 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2019-11-27 23:52:42,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:52:42,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-27 23:52:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:52:42,182 INFO L225 Difference]: With dead ends: 70 [2019-11-27 23:52:42,182 INFO L226 Difference]: Without dead ends: 43 [2019-11-27 23:52:42,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:52:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-27 23:52:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-27 23:52:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-27 23:52:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2019-11-27 23:52:42,190 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2019-11-27 23:52:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:52:42,190 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2019-11-27 23:52:42,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:52:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2019-11-27 23:52:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-27 23:52:42,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:52:42,192 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:52:42,192 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:52:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:52:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2019-11-27 23:52:42,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:52:42,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914322186] [2019-11-27 23:52:42,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:52:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:52:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:52:42,352 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:52:42,353 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:52:42,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:52:42 BoogieIcfgContainer [2019-11-27 23:52:42,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:52:42,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:52:42,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:52:42,392 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:52:42,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:52:41" (3/4) ... [2019-11-27 23:52:42,395 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:52:42,455 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:52:42,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:52:42,458 INFO L168 Benchmark]: Toolchain (without parser) took 2456.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 956.3 MB in the beginning and 999.4 MB in the end (delta: -43.1 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:42,459 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:52:42,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:42,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:42,461 INFO L168 Benchmark]: Boogie Preprocessor took 36.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:52:42,461 INFO L168 Benchmark]: RCFGBuilder took 428.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:42,462 INFO L168 Benchmark]: TraceAbstraction took 1271.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.4 MB in the end (delta: 79.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:52:42,462 INFO L168 Benchmark]: Witness Printer took 63.97 ms. Allocated memory is still 1.2 GB. Free memory is still 999.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:52:42,467 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 591.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 428.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1271.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.4 MB in the end (delta: 79.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. * Witness Printer took 63.97 ms. Allocated memory is still 1.2 GB. Free memory is still 999.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 26 SDslu, 130 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...