./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU --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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:11:37,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:11:37,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:11:37,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:11:37,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:11:37,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:11:37,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:11:37,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:11:37,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:11:37,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:11:37,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:11:37,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:11:37,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:11:37,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:11:37,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:11:37,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:11:37,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:11:37,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:11:37,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:11:37,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:11:37,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:11:38,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:11:38,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:11:38,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:11:38,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:11:38,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:11:38,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:11:38,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:11:38,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:11:38,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:11:38,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:11:38,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:11:38,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:11:38,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:11:38,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:11:38,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:11:38,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:11:38,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:11:38,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:11:38,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:11:38,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:11:38,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:11:38,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:11:38,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:11:38,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:11:38,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:11:38,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:11:38,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:11:38,109 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:11:38,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:11:38,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:11:38,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:11:38,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:11:38,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:11:38,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:11:38,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:11:38,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:11:38,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:11:38,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:11:38,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:11:38,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:11:38,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:11:38,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:11:38,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:11:38,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:11:38,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:11:38,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:11:38,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:11:38,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:11:38,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:11:38,115 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:11:38,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:11:38,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:11:38,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:11:38,117 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_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-11-02 23:11:38,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:11:38,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:11:38,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:11:38,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:11:38,462 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:11:38,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-02 23:11:38,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/1b636109d/5c787ed0b82c4a4e9b10848b55a4952e/FLAG586f33b35 [2021-11-02 23:11:39,251 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:11:39,252 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-02 23:11:39,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/1b636109d/5c787ed0b82c4a4e9b10848b55a4952e/FLAG586f33b35 [2021-11-02 23:11:39,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/1b636109d/5c787ed0b82c4a4e9b10848b55a4952e [2021-11-02 23:11:39,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:11:39,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:11:39,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:11:39,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:11:39,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:11:39,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:11:39" (1/1) ... [2021-11-02 23:11:39,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0b2047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:39, skipping insertion in model container [2021-11-02 23:11:39,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:11:39" (1/1) ... [2021-11-02 23:11:39,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:11:39,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:11:40,099 WARN L228 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_51817fa7-5c77-47d2-9170-66c25b1257bf/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-02 23:11:40,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:11:40,134 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:11:40,200 WARN L228 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_51817fa7-5c77-47d2-9170-66c25b1257bf/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-02 23:11:40,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:11:40,265 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:11:40,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40 WrapperNode [2021-11-02 23:11:40,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:11:40,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:11:40,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:11:40,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:11:40,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:11:40,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:11:40,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:11:40,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:11:40,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:11:40,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:11:40,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:11:40,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:11:40,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (1/1) ... [2021-11-02 23:11:40,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:11:40,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:40,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:11:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:11:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:11:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:11:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-11-02 23:11:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:11:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:11:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:11:41,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:11:41,109 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-02 23:11:41,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:41 BoogieIcfgContainer [2021-11-02 23:11:41,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:11:41,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:11:41,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:11:41,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:11:41,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:11:39" (1/3) ... [2021-11-02 23:11:41,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e8300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:11:41, skipping insertion in model container [2021-11-02 23:11:41,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:40" (2/3) ... [2021-11-02 23:11:41,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e8300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:11:41, skipping insertion in model container [2021-11-02 23:11:41,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:41" (3/3) ... [2021-11-02 23:11:41,144 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-11-02 23:11:41,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:11:41,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:11:41,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:11:41,217 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 23:11:41,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 23:11:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:11:41,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:41,242 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:41,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:11:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-11-02 23:11:41,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:41,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383220749] [2021-11-02 23:11:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:41,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:41,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:41,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383220749] [2021-11-02 23:11:41,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383220749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:41,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:41,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:41,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960898354] [2021-11-02 23:11:41,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:11:41,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:41,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:11:41,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:41,750 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:41,781 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-02 23:11:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-02 23:11:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:41,797 INFO L225 Difference]: With dead ends: 24 [2021-11-02 23:11:41,805 INFO L226 Difference]: Without dead ends: 9 [2021-11-02 23:11:41,809 INFO L786 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 [2021-11-02 23:11:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-02 23:11:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-02 23:11:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-02 23:11:41,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-02 23:11:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:41,849 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-02 23:11:41,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-02 23:11:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:11:41,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:41,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:41,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:11:41,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:11:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-11-02 23:11:41,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:41,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176315979] [2021-11-02 23:11:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:41,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:11:41,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:11:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:11:42,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 23:11:42,057 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 23:11:42,059 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:11:42,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:11:42,067 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-02 23:11:42,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:11:42,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:11:42 BoogieIcfgContainer [2021-11-02 23:11:42,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:11:42,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:11:42,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:11:42,117 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:11:42,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:41" (3/4) ... [2021-11-02 23:11:42,122 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 23:11:42,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:11:42,125 INFO L168 Benchmark]: Toolchain (without parser) took 2615.34 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 53.5 MB in the beginning and 65.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:42,126 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 71.9 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:11:42,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.88 ms. Allocated memory is still 98.6 MB. Free memory was 53.3 MB in the beginning and 58.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:42,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.75 ms. Allocated memory is still 98.6 MB. Free memory was 58.6 MB in the beginning and 56.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:42,136 INFO L168 Benchmark]: Boogie Preprocessor took 74.33 ms. Allocated memory is still 98.6 MB. Free memory was 56.2 MB in the beginning and 54.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:11:42,136 INFO L168 Benchmark]: RCFGBuilder took 705.52 ms. Allocated memory is still 98.6 MB. Free memory was 54.4 MB in the beginning and 72.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:42,137 INFO L168 Benchmark]: TraceAbstraction took 1000.09 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 72.2 MB in the beginning and 66.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:42,138 INFO L168 Benchmark]: Witness Printer took 6.19 ms. Allocated memory is still 127.9 MB. Free memory was 66.1 MB in the beginning and 65.5 MB in the end (delta: 595.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:11:42,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 71.9 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 748.88 ms. Allocated memory is still 98.6 MB. Free memory was 53.3 MB in the beginning and 58.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.75 ms. Allocated memory is still 98.6 MB. Free memory was 58.6 MB in the beginning and 56.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.33 ms. Allocated memory is still 98.6 MB. Free memory was 56.2 MB in the beginning and 54.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 705.52 ms. Allocated memory is still 98.6 MB. Free memory was 54.4 MB in the beginning and 72.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1000.09 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 72.2 MB in the beginning and 66.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.19 ms. Allocated memory is still 127.9 MB. Free memory was 66.1 MB in the beginning and 65.5 MB in the end (delta: 595.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L985] return __VERIFIER_nondet_int(); [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [globalState=0] [L1004] return fd; VAL [globalState=0] [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L998] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-02 23:11:42,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU --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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:11:45,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:11:45,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:11:45,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:11:45,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:11:45,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:11:45,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:11:45,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:11:45,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:11:45,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:11:45,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:11:45,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:11:45,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:11:45,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:11:45,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:11:45,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:11:45,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:11:45,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:11:45,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:11:45,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:11:45,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:11:45,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:11:45,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:11:45,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:11:45,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:11:45,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:11:45,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:11:45,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:11:45,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:11:45,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:11:45,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:11:45,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:11:45,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:11:45,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:11:45,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:11:45,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:11:45,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:11:45,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:11:45,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:11:45,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:11:45,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:11:45,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-02 23:11:45,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:11:45,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:11:45,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:11:45,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:11:45,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:11:45,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:11:45,350 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:11:45,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:11:45,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:11:45,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:11:45,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:11:45,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:11:45,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:11:45,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:11:45,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 23:11:45,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 23:11:45,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:11:45,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:11:45,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:11:45,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:11:45,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:11:45,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:11:45,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:11:45,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:11:45,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:11:45,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:11:45,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:11:45,358 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 23:11:45,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 23:11:45,358 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:11:45,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:11:45,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:11:45,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:11:45,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 23:11:45,360 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-11-02 23:11:45,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:11:45,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:11:45,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:11:45,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:11:45,839 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:11:45,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-02 23:11:45,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/fa2a8f571/b5e4e291bdfb45198d8eac7696df3aab/FLAG5fdd50646 [2021-11-02 23:11:46,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:11:46,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-02 23:11:46,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/fa2a8f571/b5e4e291bdfb45198d8eac7696df3aab/FLAG5fdd50646 [2021-11-02 23:11:46,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/data/fa2a8f571/b5e4e291bdfb45198d8eac7696df3aab [2021-11-02 23:11:46,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:11:46,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:11:47,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:11:47,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:11:47,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:11:47,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:11:46" (1/1) ... [2021-11-02 23:11:47,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d91128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47, skipping insertion in model container [2021-11-02 23:11:47,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:11:46" (1/1) ... [2021-11-02 23:11:47,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:11:47,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:11:47,597 WARN L228 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_51817fa7-5c77-47d2-9170-66c25b1257bf/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-02 23:11:47,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:11:47,630 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:11:47,680 WARN L228 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_51817fa7-5c77-47d2-9170-66c25b1257bf/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-02 23:11:47,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:11:47,765 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:11:47,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47 WrapperNode [2021-11-02 23:11:47,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:11:47,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:11:47,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:11:47,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:11:47,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:11:47,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:11:47,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:11:47,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:11:47,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:11:47,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:11:47,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:11:47,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:11:47,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (1/1) ... [2021-11-02 23:11:47,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:11:47,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:47,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:11:48,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:11:48,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:11:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 23:11:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:11:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-11-02 23:11:48,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:11:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:11:48,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:11:48,838 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-02 23:11:48,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:48 BoogieIcfgContainer [2021-11-02 23:11:48,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:11:48,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:11:48,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:11:48,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:11:48,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:11:46" (1/3) ... [2021-11-02 23:11:48,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1a33aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:11:48, skipping insertion in model container [2021-11-02 23:11:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:47" (2/3) ... [2021-11-02 23:11:48,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1a33aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:11:48, skipping insertion in model container [2021-11-02 23:11:48,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:48" (3/3) ... [2021-11-02 23:11:48,867 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-11-02 23:11:48,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:11:48,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:11:48,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:11:48,972 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 23:11:48,972 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 23:11:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:11:49,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:49,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:49,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:11:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:49,022 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-11-02 23:11:49,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:11:49,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777871182] [2021-11-02 23:11:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:49,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:11:49,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:11:49,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:11:49,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 23:11:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:49,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:11:49,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:49,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:11:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:49,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:11:49,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777871182] [2021-11-02 23:11:49,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777871182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:49,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:49,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:11:49,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803038893] [2021-11-02 23:11:49,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:11:49,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:11:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:11:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:49,466 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:49,498 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-02 23:11:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:49,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-02 23:11:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:49,511 INFO L225 Difference]: With dead ends: 24 [2021-11-02 23:11:49,511 INFO L226 Difference]: Without dead ends: 9 [2021-11-02 23:11:49,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:49,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-02 23:11:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-02 23:11:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-02 23:11:49,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-02 23:11:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:49,553 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-02 23:11:49,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-02 23:11:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:11:49,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:49,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:49,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:49,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:11:49,774 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:11:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-11-02 23:11:49,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:11:49,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346920826] [2021-11-02 23:11:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:49,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:11:49,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:11:49,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:11:49,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 23:11:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:11:49,984 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 23:11:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 23:11:50,126 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-02 23:11:50,126 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 23:11:50,129 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:11:50,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:50,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:11:50,351 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-02 23:11:50,355 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:11:50,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:11:50 BoogieIcfgContainer [2021-11-02 23:11:50,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:11:50,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:11:50,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:11:50,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:11:50,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:48" (3/4) ... [2021-11-02 23:11:50,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 23:11:50,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:11:50,410 INFO L168 Benchmark]: Toolchain (without parser) took 3412.81 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 57.5 MB in the beginning and 80.0 MB in the end (delta: -22.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:50,411 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:11:50,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.21 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 43.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:50,413 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.15 ms. Allocated memory is still 75.5 MB. Free memory was 43.3 MB in the beginning and 40.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:50,414 INFO L168 Benchmark]: Boogie Preprocessor took 83.28 ms. Allocated memory is still 75.5 MB. Free memory was 40.9 MB in the beginning and 38.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:50,415 INFO L168 Benchmark]: RCFGBuilder took 931.57 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 38.1 MB in the beginning and 80.0 MB in the end (delta: -41.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:11:50,416 INFO L168 Benchmark]: TraceAbstraction took 1543.12 ms. Allocated memory is still 111.1 MB. Free memory was 79.5 MB in the beginning and 80.6 MB in the end (delta: -1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:11:50,417 INFO L168 Benchmark]: Witness Printer took 6.20 ms. Allocated memory is still 111.1 MB. Free memory is still 80.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:11:50,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 765.21 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 43.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.15 ms. Allocated memory is still 75.5 MB. Free memory was 43.3 MB in the beginning and 40.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.28 ms. Allocated memory is still 75.5 MB. Free memory was 40.9 MB in the beginning and 38.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 931.57 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 38.1 MB in the beginning and 80.0 MB in the end (delta: -41.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1543.12 ms. Allocated memory is still 111.1 MB. Free memory was 79.5 MB in the beginning and 80.6 MB in the end (delta: -1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.20 ms. Allocated memory is still 111.1 MB. Free memory is still 80.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L985] return __VERIFIER_nondet_int(); [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [globalState=0] [L1004] return fd; VAL [globalState=0] [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L998] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-02 23:11:50,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51817fa7-5c77-47d2-9170-66c25b1257bf/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample