./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/alt_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.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/ldv-regression/alt_test.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 589815de3cdc51fdc7defb9311af2bb04cc872c8 .................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 00:42:56,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:42:56,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:42:56,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:42:56,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:42:56,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:42:56,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:42:56,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:42:56,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:42:56,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:42:56,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:42:56,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:42:56,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:42:56,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:42:56,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:42:56,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:42:56,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:42:56,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:42:56,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:42:56,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:42:56,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:42:56,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:42:56,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:42:56,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:42:56,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:42:56,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:42:56,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:42:56,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:42:56,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:42:56,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:42:56,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:42:56,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:42:56,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:42:56,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:42:56,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:42:56,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:42:56,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:42:56,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:42:56,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:42:56,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:42:56,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:42:56,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:42:56,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:42:56,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:42:56,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:42:56,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:42:56,687 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:42:56,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:42:56,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:42:56,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:42:56,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:42:56,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:42:56,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:42:56,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:42:56,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:42:56,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:42:56,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:42:56,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:42:56,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:42:56,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:42:56,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:42:56,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:42:56,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:42:56,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:42:56,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:42:56,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:42:56,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:42:56,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:42:56,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:42:56,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:42:56,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:42:56,697 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(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 -> 589815de3cdc51fdc7defb9311af2bb04cc872c8 [2020-10-20 00:42:56,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:42:56,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:42:56,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:42:56,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:42:56,947 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:42:56,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/alt_test.i [2020-10-20 00:42:57,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d40a04fc5/c3da1dd768804275b21304f291f5d606/FLAG9601a43fb [2020-10-20 00:42:57,604 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:42:57,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/alt_test.i [2020-10-20 00:42:57,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d40a04fc5/c3da1dd768804275b21304f291f5d606/FLAG9601a43fb [2020-10-20 00:42:57,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d40a04fc5/c3da1dd768804275b21304f291f5d606 [2020-10-20 00:42:57,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:42:57,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:42:57,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:42:57,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:42:57,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:42:57,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:42:57" (1/1) ... [2020-10-20 00:42:57,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6fdbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:57, skipping insertion in model container [2020-10-20 00:42:57,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:42:57" (1/1) ... [2020-10-20 00:42:57,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:42:57,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:42:58,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:42:58,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:42:58,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:42:58,562 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:42:58,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58 WrapperNode [2020-10-20 00:42:58,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:42:58,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:42:58,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:42:58,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:42:58,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:42:58,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:42:58,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:42:58,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:42:58,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (1/1) ... [2020-10-20 00:42:58,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:42:58,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:42:58,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:42:58,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:42:58,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (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 [2020-10-20 00:42:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:42:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:42:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 00:42:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:42:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:42:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:42:58,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:42:58,968 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:42:58,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:42:58 BoogieIcfgContainer [2020-10-20 00:42:58,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:42:58,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:42:58,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:42:58,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:42:58,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:42:57" (1/3) ... [2020-10-20 00:42:58,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3e0962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:42:58, skipping insertion in model container [2020-10-20 00:42:58,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:58" (2/3) ... [2020-10-20 00:42:58,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3e0962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:42:58, skipping insertion in model container [2020-10-20 00:42:58,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:42:58" (3/3) ... [2020-10-20 00:42:58,979 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-10-20 00:42:58,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:42:58,999 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:42:59,017 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:42:59,047 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:42:59,047 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:42:59,047 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:42:59,048 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:42:59,048 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:42:59,048 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:42:59,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:42:59,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:42:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-20 00:42:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:42:59,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:59,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:59,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash 119352108, now seen corresponding path program 1 times [2020-10-20 00:42:59,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:59,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870975618] [2020-10-20 00:42:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:59,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870975618] [2020-10-20 00:42:59,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:59,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:42:59,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584034976] [2020-10-20 00:42:59,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:42:59,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:42:59,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:42:59,340 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-10-20 00:42:59,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:59,434 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-20 00:42:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:42:59,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 00:42:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:59,457 INFO L225 Difference]: With dead ends: 41 [2020-10-20 00:42:59,457 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 00:42:59,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:42:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 00:42:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-20 00:42:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 00:42:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-20 00:42:59,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2020-10-20 00:42:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:59,537 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-20 00:42:59,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:42:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-20 00:42:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:42:59,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:59,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:59,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:42:59,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash 176610410, now seen corresponding path program 1 times [2020-10-20 00:42:59,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:59,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122246215] [2020-10-20 00:42:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:59,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122246215] [2020-10-20 00:42:59,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:59,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:42:59,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963883136] [2020-10-20 00:42:59,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:42:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:42:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:42:59,655 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-10-20 00:42:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:59,666 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-20 00:42:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:42:59,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 00:42:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:59,668 INFO L225 Difference]: With dead ends: 25 [2020-10-20 00:42:59,668 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 00:42:59,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:42:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 00:42:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 00:42:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 00:42:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 00:42:59,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-10-20 00:42:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:59,679 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 00:42:59,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:42:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 00:42:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:42:59,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:59,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:59,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:42:59,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash -202942197, now seen corresponding path program 1 times [2020-10-20 00:42:59,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:59,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394419245] [2020-10-20 00:42:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:59,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394419245] [2020-10-20 00:42:59,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:59,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:42:59,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646707444] [2020-10-20 00:42:59,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:42:59,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:42:59,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:42:59,767 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-10-20 00:42:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:59,818 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-20 00:42:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:42:59,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 00:42:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:59,820 INFO L225 Difference]: With dead ends: 19 [2020-10-20 00:42:59,821 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 00:42:59,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:42:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 00:42:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 00:42:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 00:42:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-10-20 00:42:59,828 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2020-10-20 00:42:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:59,828 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-10-20 00:42:59,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:42:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-10-20 00:42:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:42:59,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:59,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:59,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:42:59,831 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:59,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1910510660, now seen corresponding path program 1 times [2020-10-20 00:42:59,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:59,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784242542] [2020-10-20 00:42:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:42:59,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:42:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:42:59,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:42:59,947 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:42:59,947 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:42:59,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:42:59,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:42:59 BoogieIcfgContainer [2020-10-20 00:42:59,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:42:59,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:42:59,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:42:59,998 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:42:59,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:42:58" (3/4) ... [2020-10-20 00:43:00,000 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:43:00,054 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:43:00,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:43:00,057 INFO L168 Benchmark]: Toolchain (without parser) took 2211.76 ms. Allocated memory was 35.7 MB in the beginning and 54.5 MB in the end (delta: 18.9 MB). Free memory was 8.4 MB in the beginning and 31.3 MB in the end (delta: -22.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:43:00,057 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory is still 14.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:43:00,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.08 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 7.5 MB in the beginning and 11.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:00,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.60 ms. Allocated memory was 46.7 MB in the beginning and 47.2 MB in the end (delta: 524.3 kB). Free memory was 11.3 MB in the beginning and 29.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 670.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:43:00,060 INFO L168 Benchmark]: Boogie Preprocessor took 25.20 ms. Allocated memory is still 47.2 MB. Free memory was 29.6 MB in the beginning and 27.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:00,061 INFO L168 Benchmark]: RCFGBuilder took 319.80 ms. Allocated memory was 47.2 MB in the beginning and 50.9 MB in the end (delta: 3.7 MB). Free memory was 27.9 MB in the beginning and 30.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:00,062 INFO L168 Benchmark]: TraceAbstraction took 1025.89 ms. Allocated memory was 50.9 MB in the beginning and 54.5 MB in the end (delta: 3.7 MB). Free memory was 30.1 MB in the beginning and 34.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:00,063 INFO L168 Benchmark]: Witness Printer took 56.72 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 31.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:00,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory is still 14.9 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 713.08 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 7.5 MB in the beginning and 11.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 60.60 ms. Allocated memory was 46.7 MB in the beginning and 47.2 MB in the end (delta: 524.3 kB). Free memory was 11.3 MB in the beginning and 29.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 670.0 kB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.20 ms. Allocated memory is still 47.2 MB. Free memory was 29.6 MB in the beginning and 27.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 319.80 ms. Allocated memory was 47.2 MB in the beginning and 50.9 MB in the end (delta: 3.7 MB). Free memory was 27.9 MB in the beginning and 30.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1025.89 ms. Allocated memory was 50.9 MB in the beginning and 54.5 MB in the end (delta: 3.7 MB). Free memory was 30.1 MB in the beginning and 34.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 14.3 GB. * Witness Printer took 56.72 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 31.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1608] int globalState = 0; VAL [globalState=0] [L1621] void *retVal = malloc(size); VAL [globalState=0] [L1622] COND TRUE retVal != ((void *)0) [L1623] globalState=1 VAL [globalState=1] [L1624] return retVal; VAL [globalState=1] [L1614] int *a = (int*) l_malloc(sizeof(int)); [L1631] COND TRUE ptr!=((void *)0) VAL [globalState=1] [L1631] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=1] [L1632] globalState = 0 [L1631] COND TRUE ptr!=((void *)0) VAL [globalState=0] [L1631] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L3] __assert_fail("0", "alt_test.i", 3, "reach_error") VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 33 SDslu, 21 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...