./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condgf.c --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_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/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_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condgf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/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_63bb88cd-fe6a-42aa-b175-c717371c20e0/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 fc9306c2ddc48de21e392013ec7086bf0d234b29 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:21:59,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:21:59,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:21:59,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:21:59,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:21:59,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:21:59,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:21:59,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:21:59,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:00,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:00,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:00,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:00,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:00,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:00,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:00,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:00,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:00,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:00,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:00,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:00,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:00,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:00,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:00,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:00,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:00,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:00,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:00,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:00,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:00,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:00,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:00,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:00,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:00,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:00,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:00,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:00,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:00,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:00,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:00,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:00,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:00,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:22:00,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:00,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:00,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:00,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:00,105 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:00,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:00,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:22:00,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:00,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:22:00,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:00,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:22:00,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:00,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:22:00,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:22:00,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:22:00,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:00,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:22:00,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:00,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:00,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:00,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:00,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:00,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:00,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:22:00,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:00,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:00,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:22:00,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:00,118 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_63bb88cd-fe6a-42aa-b175-c717371c20e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc9306c2ddc48de21e392013ec7086bf0d234b29 [2021-10-11 00:22:00,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:00,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:00,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:00,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:00,528 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:00,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-fpi/condgf.c [2021-10-11 00:22:00,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/data/4bc32c97a/b007bbbb2f584b97bcb7ee098387adcf/FLAGcf1f69df3 [2021-10-11 00:22:01,092 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:01,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/sv-benchmarks/c/array-fpi/condgf.c [2021-10-11 00:22:01,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/data/4bc32c97a/b007bbbb2f584b97bcb7ee098387adcf/FLAGcf1f69df3 [2021-10-11 00:22:01,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/data/4bc32c97a/b007bbbb2f584b97bcb7ee098387adcf [2021-10-11 00:22:01,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:01,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:22:01,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:01,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:01,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:01,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c808c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01, skipping insertion in model container [2021-10-11 00:22:01,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:01,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:01,683 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_63bb88cd-fe6a-42aa-b175-c717371c20e0/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2021-10-11 00:22:01,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:01,715 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:01,728 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_63bb88cd-fe6a-42aa-b175-c717371c20e0/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2021-10-11 00:22:01,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:01,753 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:01,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01 WrapperNode [2021-10-11 00:22:01,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:01,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:01,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:22:01,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:22:01,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:01,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:01,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:01,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:01,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... [2021-10-11 00:22:01,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:01,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:01,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:01,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:01,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/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 00:22:01,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:22:01,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:22:01,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:22:01,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:22:01,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:01,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:22:01,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:22:02,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:02,171 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 00:22:02,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:02 BoogieIcfgContainer [2021-10-11 00:22:02,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:02,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:02,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:02,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:01" (1/3) ... [2021-10-11 00:22:02,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5059f1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:02, skipping insertion in model container [2021-10-11 00:22:02,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:01" (2/3) ... [2021-10-11 00:22:02,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5059f1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:02, skipping insertion in model container [2021-10-11 00:22:02,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:02" (3/3) ... [2021-10-11 00:22:02,201 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2021-10-11 00:22:02,231 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:02,234 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:22:02,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:22:02,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:02,310 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:22:02,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:02,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:02,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:02,311 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:02,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:02,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-10-11 00:22:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:22:02,332 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:02,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:02,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash -592817118, now seen corresponding path program 1 times [2021-10-11 00:22:02,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:02,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035564764] [2021-10-11 00:22:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:02,525 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 00:22:02,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035564764] [2021-10-11 00:22:02,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:02,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:22:02,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132283140] [2021-10-11 00:22:02,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:22:02,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:02,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:22:02,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:22:02,550 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2021-10-11 00:22:02,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:02,568 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2021-10-11 00:22:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:22:02,569 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-10-11 00:22:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:02,579 INFO L225 Difference]: With dead ends: 46 [2021-10-11 00:22:02,579 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 00:22:02,582 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 00:22:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 00:22:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 00:22:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 00:22:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-11 00:22:02,618 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-10-11 00:22:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:02,618 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-11 00:22:02,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:22:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-11 00:22:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:22:02,620 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:02,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:02,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:02,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:02,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash 108247460, now seen corresponding path program 1 times [2021-10-11 00:22:02,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:02,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897891607] [2021-10-11 00:22:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:02,710 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 00:22:02,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897891607] [2021-10-11 00:22:02,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:02,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:22:02,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785422412] [2021-10-11 00:22:02,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:22:02,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:22:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:22:02,716 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2021-10-11 00:22:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:02,797 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2021-10-11 00:22:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:22:02,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 00:22:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:02,799 INFO L225 Difference]: With dead ends: 48 [2021-10-11 00:22:02,799 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:22:02,800 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 [2021-10-11 00:22:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:22:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2021-10-11 00:22:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:22:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-11 00:22:02,807 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2021-10-11 00:22:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:02,807 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-11 00:22:02,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:22:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-11 00:22:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:22:02,809 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:02,809 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 00:22:02,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:22:02,810 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:02,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:02,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1242970242, now seen corresponding path program 1 times [2021-10-11 00:22:02,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:02,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154581873] [2021-10-11 00:22:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:03,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154581873] [2021-10-11 00:22:03,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436547828] [2021-10-11 00:22:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/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 00:22:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:03,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 00:22:03,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:03,582 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-11 00:22:03,590 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:22:03,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:22:03,621 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 00:22:03,622 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 00:22:03,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:22:03,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:22:03,633 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2021-10-11 00:22:03,682 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-11 00:22:03,687 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:22:03,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:22:03,704 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:22:03,705 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2021-10-11 00:22:03,924 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-11 00:22:03,928 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:22:03,937 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:22:03,941 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-10-11 00:22:03,941 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:22 [2021-10-11 00:22:04,087 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-11 00:22:04,090 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:22:04,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:22:04,099 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:22:04,099 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:7 [2021-10-11 00:22:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:04,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:22:04,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-10-11 00:22:04,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710888107] [2021-10-11 00:22:04,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-10-11 00:22:04,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:04,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-11 00:22:04,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:22:04,143 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 18 states. [2021-10-11 00:22:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:05,011 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-10-11 00:22:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:22:05,012 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2021-10-11 00:22:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:05,013 INFO L225 Difference]: With dead ends: 61 [2021-10-11 00:22:05,013 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 00:22:05,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2021-10-11 00:22:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 00:22:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2021-10-11 00:22:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:22:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-10-11 00:22:05,023 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 21 [2021-10-11 00:22:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:05,023 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-10-11 00:22:05,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-10-11 00:22:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-10-11 00:22:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:22:05,025 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:05,025 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 00:22:05,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:22:05,253 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 532037120, now seen corresponding path program 1 times [2021-10-11 00:22:05,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:05,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193706326] [2021-10-11 00:22:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:05,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:05,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:05,331 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:22:05,334 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:22:05,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:22:05,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:22:05 BoogieIcfgContainer [2021-10-11 00:22:05,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:22:05,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:22:05,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:22:05,403 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:22:05,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:02" (3/4) ... [2021-10-11 00:22:05,406 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:22:05,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bb88cd-fe6a-42aa-b175-c717371c20e0/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:22:05,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:22:05,464 INFO L168 Benchmark]: Toolchain (without parser) took 4016.19 ms. Allocated memory was 94.4 MB in the beginning and 157.3 MB in the end (delta: 62.9 MB). Free memory was 58.8 MB in the beginning and 91.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,465 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 94.4 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:05,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.50 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 71.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.43 ms. Allocated memory is still 94.4 MB. Free memory was 70.9 MB in the beginning and 69.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,466 INFO L168 Benchmark]: Boogie Preprocessor took 40.10 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,467 INFO L168 Benchmark]: RCFGBuilder took 337.43 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 51.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,467 INFO L168 Benchmark]: TraceAbstraction took 3227.36 ms. Allocated memory was 94.4 MB in the beginning and 157.3 MB in the end (delta: 62.9 MB). Free memory was 51.5 MB in the beginning and 94.8 MB in the end (delta: -43.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,468 INFO L168 Benchmark]: Witness Printer took 60.53 ms. Allocated memory is still 157.3 MB. Free memory was 94.8 MB in the beginning and 91.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:05,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 94.4 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.50 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 71.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.43 ms. Allocated memory is still 94.4 MB. Free memory was 70.9 MB in the beginning and 69.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.10 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 337.43 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 51.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3227.36 ms. Allocated memory was 94.4 MB in the beginning and 157.3 MB in the end (delta: 62.9 MB). Free memory was 51.5 MB in the beginning and 94.8 MB in the end (delta: -43.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 60.53 ms. Allocated memory is still 157.3 MB. Free memory was 94.8 MB in the beginning and 91.6 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: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i