./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer --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 cd8964853d628053ec141f0834bb54931510ac76 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-30 00:33:13,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:33:13,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:33:13,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:33:13,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:33:13,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:33:13,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:33:13,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:33:13,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:33:13,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:33:13,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:33:13,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:33:13,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:33:13,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:33:13,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:33:13,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:33:13,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:33:13,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:33:13,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:33:13,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:33:13,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:33:13,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:33:13,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:33:13,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:33:13,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:33:13,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:33:13,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:33:13,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:33:13,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:33:13,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:33:13,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:33:13,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:33:13,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:33:13,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:33:13,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:33:13,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:33:13,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:33:13,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:33:13,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:33:13,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:33:13,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:33:13,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:33:13,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:33:13,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:33:13,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:33:13,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:33:13,818 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:33:13,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:33:13,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:33:13,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:33:13,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:33:13,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:33:13,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:33:13,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:33:13,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:33:13,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:33:13,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:33:13,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:33:13,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:33:13,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:33:13,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:33:13,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:33:13,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:33:13,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:33:13,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:33:13,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:33:13,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:33:13,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:33:13,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:33:13,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:33:13,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:33:13,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8964853d628053ec141f0834bb54931510ac76 [2020-11-30 00:33:14,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:33:14,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:33:14,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:33:14,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:33:14,283 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:33:14,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/../../sv-benchmarks/c/array-fpi/brs2f.c [2020-11-30 00:33:14,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/data/43923b2c7/76bbea6778ed4d4daf90d4ee06cce5b8/FLAG39005f8e4 [2020-11-30 00:33:15,033 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:33:15,034 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/sv-benchmarks/c/array-fpi/brs2f.c [2020-11-30 00:33:15,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/data/43923b2c7/76bbea6778ed4d4daf90d4ee06cce5b8/FLAG39005f8e4 [2020-11-30 00:33:15,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/data/43923b2c7/76bbea6778ed4d4daf90d4ee06cce5b8 [2020-11-30 00:33:15,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:33:15,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:33:15,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:33:15,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:33:15,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:33:15,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c8ec37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15, skipping insertion in model container [2020-11-30 00:33:15,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:33:15,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:33:15,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:33:15,630 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:33:15,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:33:15,671 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:33:15,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15 WrapperNode [2020-11-30 00:33:15,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:33:15,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:33:15,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:33:15,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:33:15,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:33:15,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:33:15,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:33:15,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:33:15,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... [2020-11-30 00:33:15,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:33:15,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:33:15,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:33:15,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:33:15,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/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 [2020-11-30 00:33:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:33:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:33:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:33:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:33:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:33:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:33:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:33:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:33:16,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:33:16,370 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:33:16,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:33:16 BoogieIcfgContainer [2020-11-30 00:33:16,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:33:16,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:33:16,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:33:16,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:33:16,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:33:15" (1/3) ... [2020-11-30 00:33:16,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256b8ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:33:16, skipping insertion in model container [2020-11-30 00:33:16,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:33:15" (2/3) ... [2020-11-30 00:33:16,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256b8ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:33:16, skipping insertion in model container [2020-11-30 00:33:16,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:33:16" (3/3) ... [2020-11-30 00:33:16,386 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-11-30 00:33:16,399 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:33:16,404 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:33:16,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:33:16,463 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:33:16,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:33:16,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:33:16,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:33:16,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:33:16,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:33:16,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:33:16,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:33:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-30 00:33:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:33:16,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:16,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:16,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:16,511 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-11-30 00:33:16,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:16,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714646563] [2020-11-30 00:33:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:16,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714646563] [2020-11-30 00:33:16,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:33:16,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:33:16,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231453467] [2020-11-30 00:33:16,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:33:16,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:33:16,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:33:16,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:33:16,760 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-30 00:33:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:33:16,780 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-11-30 00:33:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:33:16,782 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-30 00:33:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:33:16,813 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:33:16,814 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 00:33:16,819 INFO L677 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 [2020-11-30 00:33:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 00:33:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 00:33:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:33:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-30 00:33:16,870 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-11-30 00:33:16,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:33:16,871 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-30 00:33:16,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:33:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-30 00:33:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:33:16,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:16,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:16,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:33:16,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-11-30 00:33:16,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:16,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348657748] [2020-11-30 00:33:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:17,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348657748] [2020-11-30 00:33:17,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:33:17,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:33:17,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455549657] [2020-11-30 00:33:17,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:33:17,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:33:17,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:33:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:33:17,050 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-11-30 00:33:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:33:17,156 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-30 00:33:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:33:17,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:33:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:33:17,159 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:33:17,159 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 00:33:17,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:33:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 00:33:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-30 00:33:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:33:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-30 00:33:17,169 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-11-30 00:33:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:33:17,170 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-30 00:33:17,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:33:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-30 00:33:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:33:17,172 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:17,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:17,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:33:17,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:17,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:17,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-11-30 00:33:17,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:17,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113459936] [2020-11-30 00:33:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:33:17,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113459936] [2020-11-30 00:33:17,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:33:17,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:33:17,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261137037] [2020-11-30 00:33:17,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:33:17,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:33:17,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:33:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:33:17,377 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-11-30 00:33:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:33:17,482 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-11-30 00:33:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:33:17,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 00:33:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:33:17,484 INFO L225 Difference]: With dead ends: 27 [2020-11-30 00:33:17,484 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:33:17,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:33:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:33:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-30 00:33:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 00:33:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-30 00:33:17,493 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-11-30 00:33:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:33:17,494 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-30 00:33:17,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:33:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-30 00:33:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:33:17,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:17,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:17,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:33:17,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-11-30 00:33:17,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:17,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656456504] [2020-11-30 00:33:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:17,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656456504] [2020-11-30 00:33:17,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637178774] [2020-11-30 00:33:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:33:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:33:17,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:33:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:17,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:33:17,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-11-30 00:33:17,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275365004] [2020-11-30 00:33:17,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:33:17,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:33:17,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:33:17,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:33:17,938 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-11-30 00:33:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:33:18,162 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-11-30 00:33:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:33:18,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-30 00:33:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:33:18,164 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:33:18,164 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:33:18,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:33:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:33:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-11-30 00:33:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:33:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-11-30 00:33:18,177 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-11-30 00:33:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:33:18,177 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-30 00:33:18,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:33:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-30 00:33:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:33:18,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:18,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:18,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:33:18,403 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:18,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:18,403 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-11-30 00:33:18,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:18,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109924118] [2020-11-30 00:33:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:18,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109924118] [2020-11-30 00:33:18,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543442557] [2020-11-30 00:33:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:33:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:19,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 00:33:19,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:33:19,244 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 00:33:19,246 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:33:19,256 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:33:19,257 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:33:19,257 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-11-30 00:33:19,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 00:33:19,355 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-30 00:33:19,357 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:33:19,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:33:19,374 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:33:19,374 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-11-30 00:33:19,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 00:33:19,499 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2020-11-30 00:33:19,500 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:33:19,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:33:19,518 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-30 00:33:19,518 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:29 [2020-11-30 00:33:19,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:33:19,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:33:19,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:33:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:19,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:33:19,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2020-11-30 00:33:19,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407142729] [2020-11-30 00:33:19,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 00:33:19,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:33:19,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 00:33:19,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:33:19,797 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 22 states. [2020-11-30 00:33:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:33:20,385 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-11-30 00:33:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:33:20,386 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 23 [2020-11-30 00:33:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:33:20,386 INFO L225 Difference]: With dead ends: 50 [2020-11-30 00:33:20,387 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 00:33:20,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:33:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 00:33:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-11-30 00:33:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:33:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-11-30 00:33:20,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2020-11-30 00:33:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:33:20,392 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-11-30 00:33:20,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 00:33:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-11-30 00:33:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:33:20,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:20,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:20,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:33:20,594 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:20,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2020-11-30 00:33:20,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:20,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387309382] [2020-11-30 00:33:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:33:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:20,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387309382] [2020-11-30 00:33:20,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787725393] [2020-11-30 00:33:20,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:33:20,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:33:20,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:33:20,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:33:20,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:33:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:33:20,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:33:20,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-11-30 00:33:20,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700848401] [2020-11-30 00:33:20,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:33:20,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:33:20,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:33:20,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:33:20,840 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 13 states. [2020-11-30 00:33:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:33:20,990 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-11-30 00:33:20,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:33:20,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-11-30 00:33:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:33:20,991 INFO L225 Difference]: With dead ends: 49 [2020-11-30 00:33:20,991 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 00:33:20,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:33:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 00:33:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-11-30 00:33:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:33:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-30 00:33:20,999 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2020-11-30 00:33:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:33:21,000 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-30 00:33:21,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:33:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-30 00:33:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 00:33:21,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:33:21,001 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:33:21,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:33:21,201 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:33:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:33:21,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1507669223, now seen corresponding path program 3 times [2020-11-30 00:33:21,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:33:21,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128516651] [2020-11-30 00:33:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:33:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:33:21,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:33:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:33:21,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:33:21,325 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:33:21,325 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:33:21,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:33:21,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:33:21 BoogieIcfgContainer [2020-11-30 00:33:21,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:33:21,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:33:21,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:33:21,385 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:33:21,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:33:16" (3/4) ... [2020-11-30 00:33:21,387 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:33:21,465 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f9370f43-d136-4740-ba53-3d5bbd7d3be7/bin/uautomizer/witness.graphml [2020-11-30 00:33:21,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:33:21,473 INFO L168 Benchmark]: Toolchain (without parser) took 6098.57 ms. Allocated memory was 94.4 MB in the beginning and 140.5 MB in the end (delta: 46.1 MB). Free memory was 54.7 MB in the beginning and 97.3 MB in the end (delta: -42.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:33:21,473 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:33:21,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.32 ms. Allocated memory is still 94.4 MB. Free memory was 54.6 MB in the beginning and 65.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:33:21,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 63.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:33:21,475 INFO L168 Benchmark]: Boogie Preprocessor took 27.74 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 62.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:33:21,475 INFO L168 Benchmark]: RCFGBuilder took 631.88 ms. Allocated memory is still 94.4 MB. Free memory was 62.3 MB in the beginning and 47.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:33:21,476 INFO L168 Benchmark]: TraceAbstraction took 5007.27 ms. Allocated memory was 94.4 MB in the beginning and 140.5 MB in the end (delta: 46.1 MB). Free memory was 47.6 MB in the beginning and 100.5 MB in the end (delta: -52.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:33:21,476 INFO L168 Benchmark]: Witness Printer took 87.29 ms. Allocated memory is still 140.5 MB. Free memory was 100.5 MB in the beginning and 97.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:33:21,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.32 ms. Allocated memory is still 94.4 MB. Free memory was 54.6 MB in the beginning and 65.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 63.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.74 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 62.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 631.88 ms. Allocated memory is still 94.4 MB. Free memory was 62.3 MB in the beginning and 47.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5007.27 ms. Allocated memory was 94.4 MB in the beginning and 140.5 MB in the end (delta: 46.1 MB). Free memory was 47.6 MB in the beginning and 100.5 MB in the end (delta: -52.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 87.29 ms. Allocated memory is still 140.5 MB. Free memory was 100.5 MB in the beginning and 97.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=3] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=3] [L31] COND TRUE i