./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg --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 ............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg --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 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:18:02,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:18:02,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:18:02,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:18:02,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:18:02,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:18:02,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:18:02,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:18:02,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:18:02,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:18:02,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:18:02,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:18:02,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:18:02,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:18:02,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:18:02,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:18:02,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:18:02,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:18:02,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:18:02,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:18:02,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:18:02,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:18:02,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:18:02,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:18:02,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:18:02,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:18:02,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:18:02,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:18:02,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:18:02,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:18:02,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:18:02,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:18:02,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:18:02,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:18:02,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:18:02,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:18:02,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:18:02,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:18:02,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:18:02,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:18:02,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:18:02,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:18:02,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:18:02,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:18:02,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:18:02,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:18:02,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:18:02,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:18:02,184 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:18:02,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:18:02,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:18:02,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:18:02,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:18:02,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:18:02,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:18:02,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:18:02,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:18:02,186 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:18:02,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:18:02,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:18:02,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:18:02,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:18:02,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:18:02,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:18:02,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:18:02,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:18:02,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:18:02,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:18:02,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:18:02,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:18:02,189 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:18:02,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:18:02,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:18:02,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:18:02,190 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_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-10-28 09:18:02,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:18:02,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:18:02,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:18:02,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:18:02,515 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:18:02,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-28 09:18:02,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/db55a99fa/45c958240a614355bbf2f5a57e1f003f/FLAG0999ba9c5 [2021-10-28 09:18:03,083 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:18:03,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-28 09:18:03,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/db55a99fa/45c958240a614355bbf2f5a57e1f003f/FLAG0999ba9c5 [2021-10-28 09:18:03,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/db55a99fa/45c958240a614355bbf2f5a57e1f003f [2021-10-28 09:18:03,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:18:03,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:18:03,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:18:03,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:18:03,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:18:03,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:03,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e925e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03, skipping insertion in model container [2021-10-28 09:18:03,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:03,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:18:03,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:18:03,860 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_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-28 09:18:03,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:18:03,883 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:18:03,924 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_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-28 09:18:03,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:18:03,983 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:18:03,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03 WrapperNode [2021-10-28 09:18:03,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:18:03,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:18:03,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:18:03,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:18:03,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:18:04,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:18:04,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:18:04,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:18:04,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:18:04,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:18:04,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:18:04,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:18:04,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2021-10-28 09:18:04,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:18:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:18:04,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:18:04,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:18:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:18:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:18:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-10-28 09:18:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:18:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:18:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:18:04,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:18:04,694 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 09:18:04,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:04 BoogieIcfgContainer [2021-10-28 09:18:04,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:18:04,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:18:04,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:18:04,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:18:04,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:18:03" (1/3) ... [2021-10-28 09:18:04,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7139dbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:04, skipping insertion in model container [2021-10-28 09:18:04,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (2/3) ... [2021-10-28 09:18:04,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7139dbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:04, skipping insertion in model container [2021-10-28 09:18:04,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:04" (3/3) ... [2021-10-28 09:18:04,704 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-10-28 09:18:04,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:18:04,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:18:04,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:18:04,765 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 [2021-10-28 09:18:04,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:18:04,779 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) [2021-10-28 09:18:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:18:04,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:04,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:04,785 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:18:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-10-28 09:18:04,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:04,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395459748] [2021-10-28 09:18:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:04,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:05,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:05,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395459748] [2021-10-28 09:18:05,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395459748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:05,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:05,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:18:05,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659672399] [2021-10-28 09:18:05,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:18:05,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:18:05,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:18:05,279 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) [2021-10-28 09:18:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:05,303 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-28 09:18:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:18:05,305 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 [2021-10-28 09:18:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:05,313 INFO L225 Difference]: With dead ends: 24 [2021-10-28 09:18:05,313 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 09:18:05,318 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 [2021-10-28 09:18:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 09:18:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:18:05,346 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) [2021-10-28 09:18:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 09:18:05,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-28 09:18:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:05,348 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 09:18:05,348 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) [2021-10-28 09:18:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 09:18:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:18:05,349 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:05,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:18:05,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:18:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-10-28 09:18:05,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:05,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697528943] [2021-10-28 09:18:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:05,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:18:05,404 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:18:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:18:05,456 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:18:05,457 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:18:05,458 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:18:05,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:18:05,475 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:18:05,479 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:18:05,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:05 BoogieIcfgContainer [2021-10-28 09:18:05,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:18:05,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:18:05,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:18:05,525 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:18:05,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:04" (3/4) ... [2021-10-28 09:18:05,528 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:18:05,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:18:05,530 INFO L168 Benchmark]: Toolchain (without parser) took 2132.11 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 53.8 MB in the end (delta: -403.2 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:05,530 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 59.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:05,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.03 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 69.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:05,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.16 ms. Allocated memory is still 109.1 MB. Free memory was 69.0 MB in the beginning and 66.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:05,533 INFO L168 Benchmark]: Boogie Preprocessor took 68.52 ms. Allocated memory is still 109.1 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:05,534 INFO L168 Benchmark]: RCFGBuilder took 576.75 ms. Allocated memory is still 109.1 MB. Free memory was 64.5 MB in the beginning and 50.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:05,534 INFO L168 Benchmark]: TraceAbstraction took 826.06 ms. Allocated memory is still 109.1 MB. Free memory was 49.3 MB in the beginning and 54.4 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:05,535 INFO L168 Benchmark]: Witness Printer took 3.50 ms. Allocated memory is still 109.1 MB. Free memory was 54.4 MB in the beginning and 53.8 MB in the end (delta: 598.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:05,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 59.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 586.03 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 69.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.16 ms. Allocated memory is still 109.1 MB. Free memory was 69.0 MB in the beginning and 66.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.52 ms. Allocated memory is still 109.1 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.75 ms. Allocated memory is still 109.1 MB. Free memory was 64.5 MB in the beginning and 50.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 826.06 ms. Allocated memory is still 109.1 MB. Free memory was 49.3 MB in the beginning and 54.4 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.50 ms. Allocated memory is still 109.1 MB. Free memory was 54.4 MB in the beginning and 53.8 MB in the end (delta: 598.1 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: 0.7s, 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 [2021-10-28 09:18:05,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:18:08,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:18:08,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:18:08,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:18:08,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:18:08,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:18:08,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:18:08,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:18:08,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:18:08,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:18:08,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:18:08,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:18:08,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:18:08,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:18:08,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:18:08,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:18:08,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:18:08,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:18:08,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:18:08,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:18:08,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:18:08,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:18:08,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:18:08,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:18:08,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:18:08,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:18:08,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:18:08,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:18:08,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:18:08,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:18:08,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:18:08,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:18:08,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:18:08,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:18:08,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:18:08,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:18:08,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:18:08,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:18:08,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:18:08,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:18:08,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:18:08,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:18:08,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:18:08,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:18:08,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:18:08,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:18:08,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:18:08,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:18:08,338 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:18:08,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:18:08,338 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:18:08,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:18:08,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:18:08,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:18:08,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:18:08,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:18:08,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:18:08,342 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:18:08,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:18:08,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:18:08,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:18:08,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:18:08,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:18:08,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:18:08,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:18:08,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:18:08,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:18:08,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:18:08,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:18:08,346 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:18:08,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:18:08,346 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:18:08,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:18:08,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:18:08,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:18:08,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:18:08,348 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_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-10-28 09:18:08,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:18:08,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:18:08,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:18:08,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:18:08,767 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:18:08,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-28 09:18:08,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/8425ddf00/cf22e78dc64341e3a4ca9ca9fdf24192/FLAGc84ecdfde [2021-10-28 09:18:09,378 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:18:09,381 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-28 09:18:09,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/8425ddf00/cf22e78dc64341e3a4ca9ca9fdf24192/FLAGc84ecdfde [2021-10-28 09:18:09,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/data/8425ddf00/cf22e78dc64341e3a4ca9ca9fdf24192 [2021-10-28 09:18:09,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:18:09,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:18:09,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:18:09,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:18:09,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:18:09,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:09" (1/1) ... [2021-10-28 09:18:09,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4e56c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:09, skipping insertion in model container [2021-10-28 09:18:09,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:09" (1/1) ... [2021-10-28 09:18:09,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:18:09,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:18:10,176 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_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-28 09:18:10,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:18:10,202 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:18:10,247 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_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-28 09:18:10,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:18:10,317 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:18:10,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10 WrapperNode [2021-10-28 09:18:10,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:18:10,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:18:10,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:18:10,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:18:10,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:18:10,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:18:10,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:18:10,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:18:10,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:18:10,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:18:10,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:18:10,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:18:10,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (1/1) ... [2021-10-28 09:18:10,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:18:10,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:18:10,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:18:10,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:18:10,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:18:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:18:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:18:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-10-28 09:18:10,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:18:10,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:18:11,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:18:11,026 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 09:18:11,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:11 BoogieIcfgContainer [2021-10-28 09:18:11,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:18:11,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:18:11,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:18:11,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:18:11,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:18:09" (1/3) ... [2021-10-28 09:18:11,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757911df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:11, skipping insertion in model container [2021-10-28 09:18:11,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:10" (2/3) ... [2021-10-28 09:18:11,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757911df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:11, skipping insertion in model container [2021-10-28 09:18:11,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:11" (3/3) ... [2021-10-28 09:18:11,037 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-10-28 09:18:11,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:18:11,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:18:11,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:18:11,120 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 [2021-10-28 09:18:11,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:18:11,134 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) [2021-10-28 09:18:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:18:11,139 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:11,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:11,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:18:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-10-28 09:18:11,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:18:11,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445621704] [2021-10-28 09:18:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:11,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:18:11,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:18:11,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:18:11,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:18:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:11,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:18:11,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:18:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:11,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:18:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:11,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:18:11,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445621704] [2021-10-28 09:18:11,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445621704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:11,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:11,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:18:11,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236134789] [2021-10-28 09:18:11,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:18:11,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:18:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:18:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:18:11,541 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) [2021-10-28 09:18:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:18:11,570 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-28 09:18:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:18:11,573 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 [2021-10-28 09:18:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:18:11,581 INFO L225 Difference]: With dead ends: 24 [2021-10-28 09:18:11,581 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 09:18:11,588 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 [2021-10-28 09:18:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 09:18:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:18:11,616 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) [2021-10-28 09:18:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 09:18:11,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-28 09:18:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:18:11,620 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 09:18:11,620 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) [2021-10-28 09:18:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 09:18:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:18:11,621 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:18:11,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:11,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:11,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:18:11,837 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:18:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-10-28 09:18:11,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:18:11,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774891780] [2021-10-28 09:18:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:11,840 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:18:11,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:18:11,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:18:11,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:18:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:18:12,030 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:18:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:18:12,173 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:18:12,173 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:18:12,175 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:18:12,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:12,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:18:12,394 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:18:12,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:18:12,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:12 BoogieIcfgContainer [2021-10-28 09:18:12,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:18:12,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:18:12,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:18:12,430 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:18:12,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:11" (3/4) ... [2021-10-28 09:18:12,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:18:12,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:18:12,436 INFO L168 Benchmark]: Toolchain (without parser) took 2758.15 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 38.6 MB in the beginning and 58.8 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:12,437 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 42.7 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:12,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.45 ms. Allocated memory is still 62.9 MB. Free memory was 38.4 MB in the beginning and 29.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:12,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.21 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 29.3 MB in the beginning and 63.5 MB in the end (delta: -34.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:12,440 INFO L168 Benchmark]: Boogie Preprocessor took 62.91 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 60.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:12,440 INFO L168 Benchmark]: RCFGBuilder took 580.14 ms. Allocated memory is still 83.9 MB. Free memory was 60.8 MB in the beginning and 45.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:12,441 INFO L168 Benchmark]: TraceAbstraction took 1398.76 ms. Allocated memory is still 83.9 MB. Free memory was 45.1 MB in the beginning and 59.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:12,441 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 83.9 MB. Free memory was 59.2 MB in the beginning and 58.8 MB in the end (delta: 456.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:12,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 42.7 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.45 ms. Allocated memory is still 62.9 MB. Free memory was 38.4 MB in the beginning and 29.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.21 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 29.3 MB in the beginning and 63.5 MB in the end (delta: -34.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.91 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 60.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 580.14 ms. Allocated memory is still 83.9 MB. Free memory was 60.8 MB in the beginning and 45.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1398.76 ms. Allocated memory is still 83.9 MB. Free memory was 45.1 MB in the beginning and 59.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.74 ms. Allocated memory is still 83.9 MB. Free memory was 59.2 MB in the beginning and 58.8 MB in the end (delta: 456.4 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: 1.2s, 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 [2021-10-28 09:18:12,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88e9bec-5c8a-4568-ba52-1ff5108e91e3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...