./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs3f.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_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs3f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/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 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:30:02,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:30:02,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:30:02,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:30:02,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:30:02,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:30:02,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:30:02,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:30:02,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:30:02,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:30:02,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:30:02,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:30:02,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:30:02,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:30:02,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:30:02,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:30:02,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:30:02,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:30:02,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:30:02,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:30:02,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:30:02,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:30:02,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:30:02,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:30:02,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:30:02,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:30:02,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:30:02,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:30:02,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:30:02,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:30:02,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:30:02,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:30:02,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:30:02,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:30:02,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:30:02,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:30:02,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:30:02,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:30:02,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:30:02,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:30:02,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:30:02,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:30:02,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:30:02,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:30:02,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:30:02,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:30:02,458 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:30:02,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:30:02,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:30:02,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:30:02,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:30:02,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:30:02,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:30:02,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:30:02,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:30:02,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:30:02,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:30:02,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:30:02,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:30:02,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:30:02,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:30:02,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:30:02,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:30:02,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:30:02,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:30:02,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:30:02,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:30:02,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:30:02,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:30:02,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:30:02,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:30:02,466 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_b3f81517-4e38-46c1-8ab3-4066f26e68e8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6b49f9c2a6d2eda01ab26465c2ce5a73ff1827 [2020-11-30 01:30:02,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:30:02,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:30:02,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:30:02,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:30:02,789 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:30:02,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/../../sv-benchmarks/c/array-fpi/brs3f.c [2020-11-30 01:30:02,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/data/4cf6f94bb/351b8564d6974089a6197d64ba47c7ce/FLAG7398f8d7c [2020-11-30 01:30:03,439 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:30:03,440 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/sv-benchmarks/c/array-fpi/brs3f.c [2020-11-30 01:30:03,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/data/4cf6f94bb/351b8564d6974089a6197d64ba47c7ce/FLAG7398f8d7c [2020-11-30 01:30:03,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/data/4cf6f94bb/351b8564d6974089a6197d64ba47c7ce [2020-11-30 01:30:03,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:30:03,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:30:03,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:30:03,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:30:03,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:30:03,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:30:03" (1/1) ... [2020-11-30 01:30:03,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77398596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:03, skipping insertion in model container [2020-11-30 01:30:03,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:30:03" (1/1) ... [2020-11-30 01:30:03,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:30:03,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:30:04,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:30:04,059 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:30:04,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:30:04,132 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:30:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04 WrapperNode [2020-11-30 01:30:04,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:30:04,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:30:04,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:30:04,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:30:04,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:30:04,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:30:04,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:30:04,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:30:04,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... [2020-11-30 01:30:04,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:30:04,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:30:04,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:30:04,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:30:04,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/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 01:30:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:30:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:30:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:30:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:30:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:30:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:30:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:30:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:30:04,646 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:30:04,647 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:30:04,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:04 BoogieIcfgContainer [2020-11-30 01:30:04,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:30:04,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:30:04,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:30:04,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:30:04,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:30:03" (1/3) ... [2020-11-30 01:30:04,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae52f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:30:04, skipping insertion in model container [2020-11-30 01:30:04,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:04" (2/3) ... [2020-11-30 01:30:04,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae52f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:30:04, skipping insertion in model container [2020-11-30 01:30:04,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:04" (3/3) ... [2020-11-30 01:30:04,681 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-11-30 01:30:04,694 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:30:04,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:30:04,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:30:04,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:30:04,749 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:30:04,749 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:30:04,749 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:30:04,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:30:04,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:30:04,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:30:04,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:30:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-30 01:30:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:30:04,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:04,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:30:04,789 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:04,799 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-11-30 01:30:04,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:04,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884914652] [2020-11-30 01:30:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:04,981 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 01:30:04,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884914652] [2020-11-30 01:30:04,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:04,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:30:04,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152657598] [2020-11-30 01:30:04,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:30:04,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:30:05,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:30:05,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:30:05,009 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-30 01:30:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:05,029 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-11-30 01:30:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:30:05,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-30 01:30:05,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:05,041 INFO L225 Difference]: With dead ends: 37 [2020-11-30 01:30:05,041 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:30:05,045 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 01:30:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:30:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:30:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:30:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-30 01:30:05,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-11-30 01:30:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:05,082 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-30 01:30:05,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:30:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-30 01:30:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:30:05,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:05,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:30:05,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:30:05,083 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:05,084 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-11-30 01:30:05,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:05,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722585358] [2020-11-30 01:30:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:05,200 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 01:30:05,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722585358] [2020-11-30 01:30:05,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:05,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:30:05,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750073516] [2020-11-30 01:30:05,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:30:05,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:30:05,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:30:05,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:30:05,204 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-11-30 01:30:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:05,294 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-30 01:30:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:30:05,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 01:30:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:05,296 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:30:05,296 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 01:30:05,297 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 01:30:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 01:30:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-30 01:30:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:30:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-30 01:30:05,302 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-11-30 01:30:05,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:05,303 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-30 01:30:05,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:30:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-30 01:30:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:30:05,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:05,304 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 01:30:05,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:30:05,305 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:05,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-11-30 01:30:05,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:05,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608814043] [2020-11-30 01:30:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:05,469 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 01:30:05,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608814043] [2020-11-30 01:30:05,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:05,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:30:05,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502579957] [2020-11-30 01:30:05,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:30:05,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:30:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:30:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:30:05,472 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-11-30 01:30:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:05,552 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-11-30 01:30:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:30:05,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 01:30:05,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:05,554 INFO L225 Difference]: With dead ends: 27 [2020-11-30 01:30:05,554 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:30:05,554 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 01:30:05,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:30:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-30 01:30:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:30:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-30 01:30:05,560 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-11-30 01:30:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:05,560 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-30 01:30:05,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:30:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-30 01:30:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:30:05,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:05,562 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 01:30:05,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:30:05,562 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-11-30 01:30:05,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:05,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122545234] [2020-11-30 01:30:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:05,675 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 01:30:05,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122545234] [2020-11-30 01:30:05,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796441245] [2020-11-30 01:30:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/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 01:30:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:05,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:30:05,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:05,842 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 01:30:05,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:30:05,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-11-30 01:30:05,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710242017] [2020-11-30 01:30:05,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:30:05,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:30:05,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:30:05,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:30:05,846 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-11-30 01:30:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:06,009 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-11-30 01:30:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:30:06,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-30 01:30:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:30:06,011 INFO L225 Difference]: With dead ends: 43 [2020-11-30 01:30:06,011 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:30:06,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:30:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:30:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-11-30 01:30:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 01:30:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-11-30 01:30:06,021 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-11-30 01:30:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:30:06,021 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-30 01:30:06,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:30:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-30 01:30:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:30:06,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:30:06,024 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 01:30:06,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:30:06,236 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:30:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:06,237 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-11-30 01:30:06,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:06,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707023321] [2020-11-30 01:30:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:06,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:06,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:06,426 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:06,426 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:30:06,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:30:06,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:30:06 BoogieIcfgContainer [2020-11-30 01:30:06,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:30:06,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:30:06,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:30:06,471 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:30:06,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:04" (3/4) ... [2020-11-30 01:30:06,473 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:30:06,547 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b3f81517-4e38-46c1-8ab3-4066f26e68e8/bin/uautomizer/witness.graphml [2020-11-30 01:30:06,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:30:06,549 INFO L168 Benchmark]: Toolchain (without parser) took 2760.92 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 78.8 MB in the end (delta: -34.5 kB). Peak memory consumption was 419.2 kB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,550 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 42.1 MB in the beginning and 42.0 MB in the end (delta: 72.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.76 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 84.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.31 ms. Allocated memory is still 107.0 MB. Free memory was 84.3 MB in the beginning and 82.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,552 INFO L168 Benchmark]: Boogie Preprocessor took 30.16 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:06,553 INFO L168 Benchmark]: RCFGBuilder took 436.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 66.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,553 INFO L168 Benchmark]: TraceAbstraction took 1806.75 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 81.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,554 INFO L168 Benchmark]: Witness Printer took 76.97 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 78.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:06,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 42.1 MB in the beginning and 42.0 MB in the end (delta: 72.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.76 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 84.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.31 ms. Allocated memory is still 107.0 MB. Free memory was 84.3 MB in the beginning and 82.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.16 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 436.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 66.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1806.75 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 81.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. * Witness Printer took 76.97 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 78.8 MB in the end (delta: 2.9 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=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=2] [L31] COND TRUE i