./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC --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 8770e865452d763f6a1ae70a92c5caf41552c1e5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 00:30:03,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:30:03,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:30:03,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:30:03,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:30:03,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:30:03,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:30:03,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:30:03,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:30:03,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:30:03,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:30:03,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:30:03,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:30:03,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:30:03,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:30:03,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:30:03,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:30:03,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:30:03,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:30:03,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:30:03,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:30:03,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:30:03,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:30:03,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:30:03,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:30:03,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:30:03,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:30:03,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:30:03,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:30:03,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:30:03,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:30:03,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:30:03,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:30:03,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:30:03,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:30:03,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:30:03,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:30:03,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:30:03,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:30:03,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:30:03,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:30:03,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:30:03,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:30:03,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:30:03,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:30:03,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:30:03,656 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:30:03,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:30:03,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:30:03,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:30:03,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:30:03,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:30:03,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:30:03,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:30:03,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:30:03,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:30:03,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:30:03,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:30:03,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:30:03,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:30:03,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:30:03,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:30:03,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:03,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:30:03,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:30:03,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:30:03,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:30:03,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:30:03,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:30:03,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:30:03,665 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_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8770e865452d763f6a1ae70a92c5caf41552c1e5 [2021-10-11 00:30:03,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:30:03,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:30:03,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:30:03,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:30:03,956 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:30:03,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 00:30:04,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/data/1e4cada84/76c576f5830e406b8156d80fea32a08f/FLAG98b92a0fc [2021-10-11 00:30:04,649 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:30:04,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 00:30:04,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/data/1e4cada84/76c576f5830e406b8156d80fea32a08f/FLAG98b92a0fc [2021-10-11 00:30:05,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/data/1e4cada84/76c576f5830e406b8156d80fea32a08f [2021-10-11 00:30:05,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:30:05,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:30:05,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:05,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:30:05,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:30:05,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731bc7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05, skipping insertion in model container [2021-10-11 00:30:05,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:30:05,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:30:05,352 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-10-11 00:30:05,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:05,434 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:30:05,447 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-10-11 00:30:05,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:05,498 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:30:05,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05 WrapperNode [2021-10-11 00:30:05,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:05,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:05,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:30:05,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:30:05,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:05,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:30:05,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:30:05,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:30:05,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... [2021-10-11 00:30:05,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:30:05,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:30:05,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:30:05,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:30:05,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:30:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:30:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:30:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:30:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:30:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-11 00:30:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:30:05,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:30:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:30:06,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:30:06,124 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:30:06,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:06 BoogieIcfgContainer [2021-10-11 00:30:06,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:30:06,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:30:06,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:30:06,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:30:06,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:30:05" (1/3) ... [2021-10-11 00:30:06,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37510f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:06, skipping insertion in model container [2021-10-11 00:30:06,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:05" (2/3) ... [2021-10-11 00:30:06,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37510f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:06, skipping insertion in model container [2021-10-11 00:30:06,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:06" (3/3) ... [2021-10-11 00:30:06,143 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 00:30:06,157 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:30:06,160 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:30:06,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:30:06,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:30:06,230 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:30:06,231 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:30:06,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:30:06,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:30:06,232 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:30:06,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:30:06,232 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:30:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-10-11 00:30:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:30:06,252 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:06,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:06,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:06,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:06,259 INFO L82 PathProgramCache]: Analyzing trace with hash -649032135, now seen corresponding path program 1 times [2021-10-11 00:30:06,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:06,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634610804] [2021-10-11 00:30:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:06,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634610804] [2021-10-11 00:30:06,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:06,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:30:06,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732551073] [2021-10-11 00:30:06,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:30:06,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:30:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:30:06,470 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2021-10-11 00:30:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:06,488 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-10-11 00:30:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:30:06,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2021-10-11 00:30:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:06,496 INFO L225 Difference]: With dead ends: 65 [2021-10-11 00:30:06,496 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 00:30:06,499 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 [2021-10-11 00:30:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 00:30:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 00:30:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 00:30:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-10-11 00:30:06,529 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 17 [2021-10-11 00:30:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:06,530 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-10-11 00:30:06,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:30:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-10-11 00:30:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:30:06,531 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:06,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:06,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:30:06,532 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:06,533 INFO L82 PathProgramCache]: Analyzing trace with hash -829015504, now seen corresponding path program 1 times [2021-10-11 00:30:06,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:06,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886532043] [2021-10-11 00:30:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:06,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886532043] [2021-10-11 00:30:06,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:06,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:06,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493890207] [2021-10-11 00:30:06,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:06,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:06,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:06,630 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 3 states. [2021-10-11 00:30:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:06,650 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2021-10-11 00:30:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:06,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:30:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:06,652 INFO L225 Difference]: With dead ends: 56 [2021-10-11 00:30:06,652 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 00:30:06,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:06,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 00:30:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-11 00:30:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 00:30:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-10-11 00:30:06,659 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 21 [2021-10-11 00:30:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:06,660 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-10-11 00:30:06,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-10-11 00:30:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:30:06,661 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:06,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:06,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:30:06,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:06,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2108879182, now seen corresponding path program 1 times [2021-10-11 00:30:06,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:06,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478329626] [2021-10-11 00:30:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478329626] [2021-10-11 00:30:06,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:06,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:30:06,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744546210] [2021-10-11 00:30:06,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:30:06,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:06,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:30:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:06,759 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand 5 states. [2021-10-11 00:30:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:06,907 INFO L93 Difference]: Finished difference Result 85 states and 113 transitions. [2021-10-11 00:30:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:30:06,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-10-11 00:30:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:06,909 INFO L225 Difference]: With dead ends: 85 [2021-10-11 00:30:06,909 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 00:30:06,910 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 [2021-10-11 00:30:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 00:30:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 38. [2021-10-11 00:30:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-10-11 00:30:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2021-10-11 00:30:06,918 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 21 [2021-10-11 00:30:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:06,918 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-10-11 00:30:06,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:30:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2021-10-11 00:30:06,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:30:06,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:06,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:06,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:30:06,920 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2049773838, now seen corresponding path program 1 times [2021-10-11 00:30:06,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:06,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913077667] [2021-10-11 00:30:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:07,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913077667] [2021-10-11 00:30:07,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:07,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:30:07,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317447709] [2021-10-11 00:30:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:30:07,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:07,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:30:07,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:30:07,112 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 7 states. [2021-10-11 00:30:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:07,447 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2021-10-11 00:30:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:30:07,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 00:30:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:07,450 INFO L225 Difference]: With dead ends: 140 [2021-10-11 00:30:07,451 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 00:30:07,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:30:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 00:30:07,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2021-10-11 00:30:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 00:30:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2021-10-11 00:30:07,464 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 21 [2021-10-11 00:30:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:07,464 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2021-10-11 00:30:07,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:30:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2021-10-11 00:30:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:30:07,466 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:07,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:07,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:30:07,466 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1791608400, now seen corresponding path program 1 times [2021-10-11 00:30:07,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:07,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607584434] [2021-10-11 00:30:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:07,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607584434] [2021-10-11 00:30:07,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:07,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:30:07,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436499167] [2021-10-11 00:30:07,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:30:07,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:30:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:30:07,638 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand 7 states. [2021-10-11 00:30:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:07,848 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2021-10-11 00:30:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:30:07,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 00:30:07,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:07,850 INFO L225 Difference]: With dead ends: 99 [2021-10-11 00:30:07,850 INFO L226 Difference]: Without dead ends: 97 [2021-10-11 00:30:07,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:30:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-11 00:30:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2021-10-11 00:30:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-10-11 00:30:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 104 transitions. [2021-10-11 00:30:07,864 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 104 transitions. Word has length 21 [2021-10-11 00:30:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:07,864 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 104 transitions. [2021-10-11 00:30:07,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:30:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 104 transitions. [2021-10-11 00:30:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:30:07,866 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:07,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:07,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:30:07,866 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:07,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:07,867 INFO L82 PathProgramCache]: Analyzing trace with hash -784963603, now seen corresponding path program 1 times [2021-10-11 00:30:07,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:07,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771950297] [2021-10-11 00:30:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:07,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771950297] [2021-10-11 00:30:07,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:07,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:30:07,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226949813] [2021-10-11 00:30:07,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:30:07,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:07,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:30:07,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:30:07,966 INFO L87 Difference]: Start difference. First operand 77 states and 104 transitions. Second operand 4 states. [2021-10-11 00:30:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:08,004 INFO L93 Difference]: Finished difference Result 128 states and 172 transitions. [2021-10-11 00:30:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:30:08,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-10-11 00:30:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:08,006 INFO L225 Difference]: With dead ends: 128 [2021-10-11 00:30:08,006 INFO L226 Difference]: Without dead ends: 87 [2021-10-11 00:30:08,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-11 00:30:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-11 00:30:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-10-11 00:30:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2021-10-11 00:30:08,032 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 23 [2021-10-11 00:30:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:08,033 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-10-11 00:30:08,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:30:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2021-10-11 00:30:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:30:08,034 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:08,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:08,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:30:08,035 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:08,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:08,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1177990613, now seen corresponding path program 1 times [2021-10-11 00:30:08,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:08,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487063030] [2021-10-11 00:30:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:08,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487063030] [2021-10-11 00:30:08,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:08,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:30:08,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003983666] [2021-10-11 00:30:08,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:30:08,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:08,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:30:08,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:30:08,142 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand 6 states. [2021-10-11 00:30:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:08,231 INFO L93 Difference]: Finished difference Result 189 states and 245 transitions. [2021-10-11 00:30:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:30:08,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-10-11 00:30:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:08,233 INFO L225 Difference]: With dead ends: 189 [2021-10-11 00:30:08,233 INFO L226 Difference]: Without dead ends: 114 [2021-10-11 00:30:08,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:30:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-11 00:30:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 85. [2021-10-11 00:30:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-10-11 00:30:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2021-10-11 00:30:08,245 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 23 [2021-10-11 00:30:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:08,245 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2021-10-11 00:30:08,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:30:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2021-10-11 00:30:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 00:30:08,247 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:08,247 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:08,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:30:08,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:08,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1710953077, now seen corresponding path program 1 times [2021-10-11 00:30:08,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:08,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81255583] [2021-10-11 00:30:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:08,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81255583] [2021-10-11 00:30:08,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025535600] [2021-10-11 00:30:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:30:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:08,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:30:08,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:08,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:08,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:30:08,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018058513] [2021-10-11 00:30:08,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:30:08,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:08,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:30:08,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:30:08,475 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 7 states. [2021-10-11 00:30:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:08,596 INFO L93 Difference]: Finished difference Result 222 states and 275 transitions. [2021-10-11 00:30:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:30:08,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2021-10-11 00:30:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:08,598 INFO L225 Difference]: With dead ends: 222 [2021-10-11 00:30:08,598 INFO L226 Difference]: Without dead ends: 159 [2021-10-11 00:30:08,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:30:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-11 00:30:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 121. [2021-10-11 00:30:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-10-11 00:30:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2021-10-11 00:30:08,611 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 28 [2021-10-11 00:30:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:08,611 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2021-10-11 00:30:08,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:30:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2021-10-11 00:30:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:30:08,613 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:08,613 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:08,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 00:30:08,840 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2012014699, now seen corresponding path program 2 times [2021-10-11 00:30:08,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:08,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943509773] [2021-10-11 00:30:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:08,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943509773] [2021-10-11 00:30:08,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615681872] [2021-10-11 00:30:08,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:30:09,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:30:09,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:30:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:30:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:09,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:09,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-11 00:30:09,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125551127] [2021-10-11 00:30:09,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 00:30:09,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:09,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 00:30:09,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:30:09,266 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand 17 states. [2021-10-11 00:30:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:09,772 INFO L93 Difference]: Finished difference Result 249 states and 308 transitions. [2021-10-11 00:30:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 00:30:09,772 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2021-10-11 00:30:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:09,774 INFO L225 Difference]: With dead ends: 249 [2021-10-11 00:30:09,774 INFO L226 Difference]: Without dead ends: 171 [2021-10-11 00:30:09,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2021-10-11 00:30:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-11 00:30:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 114. [2021-10-11 00:30:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-10-11 00:30:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 144 transitions. [2021-10-11 00:30:09,787 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 144 transitions. Word has length 33 [2021-10-11 00:30:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:09,788 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 144 transitions. [2021-10-11 00:30:09,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 00:30:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 144 transitions. [2021-10-11 00:30:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:30:09,789 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:09,790 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:10,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:10,009 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:10,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1000897449, now seen corresponding path program 1 times [2021-10-11 00:30:10,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:10,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373121130] [2021-10-11 00:30:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:10,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373121130] [2021-10-11 00:30:10,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620311567] [2021-10-11 00:30:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:30:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:10,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:30:10,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:10,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:30:10,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:30:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:10,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:10,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-11 00:30:10,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032921038] [2021-10-11 00:30:10,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 00:30:10,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:10,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 00:30:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:30:10,479 INFO L87 Difference]: Start difference. First operand 114 states and 144 transitions. Second operand 16 states. [2021-10-11 00:30:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:10,962 INFO L93 Difference]: Finished difference Result 220 states and 271 transitions. [2021-10-11 00:30:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-11 00:30:10,963 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2021-10-11 00:30:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:10,966 INFO L225 Difference]: With dead ends: 220 [2021-10-11 00:30:10,967 INFO L226 Difference]: Without dead ends: 218 [2021-10-11 00:30:10,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2021-10-11 00:30:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-11 00:30:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 133. [2021-10-11 00:30:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-10-11 00:30:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 173 transitions. [2021-10-11 00:30:10,991 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 173 transitions. Word has length 33 [2021-10-11 00:30:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:10,992 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 173 transitions. [2021-10-11 00:30:10,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 00:30:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 173 transitions. [2021-10-11 00:30:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:30:11,001 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:11,001 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:11,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 00:30:11,218 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1002744491, now seen corresponding path program 1 times [2021-10-11 00:30:11,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:11,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703376439] [2021-10-11 00:30:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:30:11,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:30:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:30:11,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:30:11,280 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:30:11,281 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:30:11,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 00:30:11,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:30:11 BoogieIcfgContainer [2021-10-11 00:30:11,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:30:11,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:30:11,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:30:11,337 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:30:11,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:06" (3/4) ... [2021-10-11 00:30:11,339 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:30:11,424 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bdae38-c4eb-4e4f-92bb-24e374e40419/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:30:11,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:30:11,426 INFO L168 Benchmark]: Toolchain (without parser) took 6399.64 ms. Allocated memory was 92.3 MB in the beginning and 163.6 MB in the end (delta: 71.3 MB). Free memory was 62.6 MB in the beginning and 101.0 MB in the end (delta: -38.4 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,427 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 92.3 MB. Free memory was 46.0 MB in the beginning and 45.9 MB in the end (delta: 39.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:11,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.74 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 62.3 MB in the beginning and 85.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.23 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 83.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,428 INFO L168 Benchmark]: Boogie Preprocessor took 71.45 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,429 INFO L168 Benchmark]: RCFGBuilder took 510.67 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 62.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,429 INFO L168 Benchmark]: TraceAbstraction took 5207.68 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 61.6 MB in the beginning and 104.1 MB in the end (delta: -42.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,430 INFO L168 Benchmark]: Witness Printer took 87.78 ms. Allocated memory is still 163.6 MB. Free memory was 104.1 MB in the beginning and 101.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:11,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 92.3 MB. Free memory was 46.0 MB in the beginning and 45.9 MB in the end (delta: 39.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 471.74 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 62.3 MB in the beginning and 85.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.23 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 83.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.45 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 510.67 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 62.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5207.68 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 61.6 MB in the beginning and 104.1 MB in the end (delta: -42.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 87.78 ms. Allocated memory is still 163.6 MB. Free memory was 104.1 MB in the beginning and 101.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j [L41] return strncpy(dest,src,n); [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 463 SDtfs, 1217 SDslu, 1428 SDs, 0 SdLazy, 1263 SolverSat, 189 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 285 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 34914 SizeOfPredicates, 9 NumberOfNonLiveVariables, 419 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 0/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...