./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8 --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 a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:20:16,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:20:16,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:20:17,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:20:17,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:20:17,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:20:17,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:20:17,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:20:17,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:20:17,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:20:17,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:20:17,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:20:17,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:20:17,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:20:17,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:20:17,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:20:17,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:20:17,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:20:17,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:20:17,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:20:17,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:20:17,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:20:17,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:20:17,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:20:17,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:20:17,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:20:17,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:20:17,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:20:17,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:20:17,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:20:17,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:20:17,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:20:17,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:20:17,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:20:17,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:20:17,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:20:17,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:20:17,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:20:17,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:20:17,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:20:17,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:20:17,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:20:17,065 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:20:17,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:20:17,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:20:17,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:20:17,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:20:17,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:20:17,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:20:17,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:20:17,067 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:20:17,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:20:17,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:20:17,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:20:17,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:20:17,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:20:17,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:20:17,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:20:17,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:20:17,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:20:17,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:20:17,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:20:17,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:20:17,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:20:17,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:20:17,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:20:17,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:20:17,071 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:20:17,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:20:17,071 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:20:17,071 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec [2022-12-13 15:20:17,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:20:17,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:20:17,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:20:17,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:20:17,250 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:20:17,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench/freire1.c [2022-12-13 15:20:19,826 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:20:19,960 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:20:19,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/sv-benchmarks/c/nla-digbench/freire1.c [2022-12-13 15:20:19,965 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data/b25fb8c31/727f1ea5ee914ad6ad61a6ba137f8e36/FLAG3009b77a0 [2022-12-13 15:20:19,975 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data/b25fb8c31/727f1ea5ee914ad6ad61a6ba137f8e36 [2022-12-13 15:20:19,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:20:19,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:20:19,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:20:19,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:20:19,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:20:19,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:20:19" (1/1) ... [2022-12-13 15:20:19,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f432cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:19, skipping insertion in model container [2022-12-13 15:20:19,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:20:19" (1/1) ... [2022-12-13 15:20:19,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:20:20,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:20:20,116 WARN L237 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_acc9ab72-768f-46f6-92d3-0f6a996d5255/sv-benchmarks/c/nla-digbench/freire1.c[712,725] [2022-12-13 15:20:20,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:20:20,138 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:20:20,150 WARN L237 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_acc9ab72-768f-46f6-92d3-0f6a996d5255/sv-benchmarks/c/nla-digbench/freire1.c[712,725] [2022-12-13 15:20:20,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:20:20,166 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:20:20,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20 WrapperNode [2022-12-13 15:20:20,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:20:20,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:20:20,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:20:20,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:20:20,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,194 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-12-13 15:20:20,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:20:20,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:20:20,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:20:20,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:20:20,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:20:20,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:20:20,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:20:20,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:20:20,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (1/1) ... [2022-12-13 15:20:20,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:20:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:20:20,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:20:20,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:20:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:20:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:20:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:20:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:20:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 15:20:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 15:20:20,337 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:20:20,338 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:20:20,414 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:20:20,420 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:20:20,420 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:20:20,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:20:20 BoogieIcfgContainer [2022-12-13 15:20:20,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:20:20,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:20:20,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:20:20,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:20:20,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:20:19" (1/3) ... [2022-12-13 15:20:20,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214f848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:20:20, skipping insertion in model container [2022-12-13 15:20:20,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:20" (2/3) ... [2022-12-13 15:20:20,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214f848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:20:20, skipping insertion in model container [2022-12-13 15:20:20,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:20:20" (3/3) ... [2022-12-13 15:20:20,428 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1.c [2022-12-13 15:20:20,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:20:20,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:20:20,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:20:20,489 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@453d0313, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:20:20,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:20:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:20:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 15:20:20,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:20,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:20,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1818803301, now seen corresponding path program 1 times [2022-12-13 15:20:20,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:20,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534218672] [2022-12-13 15:20:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:20,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:20,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534218672] [2022-12-13 15:20:20,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534218672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:20,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:20,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:20:20,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077925619] [2022-12-13 15:20:20,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:20,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:20:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:20:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:20:20,668 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:20,687 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-12-13 15:20:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:20:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 15:20:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:20,697 INFO L225 Difference]: With dead ends: 30 [2022-12-13 15:20:20,697 INFO L226 Difference]: Without dead ends: 12 [2022-12-13 15:20:20,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:20:20,703 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:20,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:20:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-13 15:20:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-13 15:20:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:20:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-12-13 15:20:20,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-12-13 15:20:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:20,736 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-12-13 15:20:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-12-13 15:20:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 15:20:20,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:20,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:20:20,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1811355551, now seen corresponding path program 1 times [2022-12-13 15:20:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:20,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908666127] [2022-12-13 15:20:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:20:20,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:20:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:20:20,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:20:20,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:20:20,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 15:20:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:20:20,781 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:20:20,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:20:20,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:20:20 BoogieIcfgContainer [2022-12-13 15:20:20,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:20:20,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:20:20,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:20:20,796 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:20:20,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:20:20" (3/4) ... [2022-12-13 15:20:20,798 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 15:20:20,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:20:20,799 INFO L158 Benchmark]: Toolchain (without parser) took 820.95ms. Allocated memory is still 148.9MB. Free memory was 86.8MB in the beginning and 107.7MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:20:20,799 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:20:20,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.01ms. Allocated memory is still 148.9MB. Free memory was 86.6MB in the beginning and 76.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:20:20,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.60ms. Allocated memory is still 148.9MB. Free memory was 76.3MB in the beginning and 74.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:20:20,800 INFO L158 Benchmark]: Boogie Preprocessor took 20.01ms. Allocated memory is still 148.9MB. Free memory was 74.9MB in the beginning and 73.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:20:20,800 INFO L158 Benchmark]: RCFGBuilder took 205.23ms. Allocated memory is still 148.9MB. Free memory was 73.7MB in the beginning and 64.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:20:20,800 INFO L158 Benchmark]: TraceAbstraction took 371.74ms. Allocated memory is still 148.9MB. Free memory was 63.3MB in the beginning and 107.7MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:20:20,801 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 148.9MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:20:20,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.01ms. Allocated memory is still 148.9MB. Free memory was 86.6MB in the beginning and 76.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.60ms. Allocated memory is still 148.9MB. Free memory was 76.3MB in the beginning and 74.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.01ms. Allocated memory is still 148.9MB. Free memory was 74.9MB in the beginning and 73.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.23ms. Allocated memory is still 148.9MB. Free memory was 73.7MB in the beginning and 64.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 371.74ms. Allocated memory is still 148.9MB. Free memory was 63.3MB in the beginning and 107.7MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 148.9MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 VAL [r=0] [L31] COND TRUE 1 VAL [r=0] [L32] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2022-12-13 15:20:20,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8 --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 a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:20:22,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:20:22,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:20:22,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:20:22,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:20:22,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:20:22,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:20:22,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:20:22,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:20:22,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:20:22,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:20:22,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:20:22,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:20:22,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:20:22,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:20:22,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:20:22,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:20:22,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:20:22,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:20:22,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:20:22,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:20:22,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:20:22,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:20:22,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:20:22,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:20:22,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:20:22,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:20:22,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:20:22,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:20:22,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:20:22,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:20:22,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:20:22,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:20:22,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:20:22,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:20:22,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:20:22,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:20:22,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:20:22,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:20:22,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:20:22,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:20:22,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 15:20:22,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:20:22,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:20:22,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:20:22,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:20:22,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:20:22,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:20:22,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:20:22,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:20:22,734 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:20:22,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:20:22,735 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:20:22,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:20:22,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:20:22,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:20:22,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:20:22,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:20:22,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:20:22,737 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 15:20:22,737 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 15:20:22,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:20:22,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:20:22,738 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:20:22,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:20:22,738 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 15:20:22,738 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:20:22,738 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec [2022-12-13 15:20:22,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:20:22,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:20:22,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:20:22,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:20:22,985 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:20:22,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench/freire1.c [2022-12-13 15:20:25,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:20:25,766 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:20:25,767 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/sv-benchmarks/c/nla-digbench/freire1.c [2022-12-13 15:20:25,772 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data/d4909ef7c/11be28067a374e758d19c2bc45f1e793/FLAG458b53dff [2022-12-13 15:20:25,782 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/data/d4909ef7c/11be28067a374e758d19c2bc45f1e793 [2022-12-13 15:20:25,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:20:25,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:20:25,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:20:25,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:20:25,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:20:25,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:25,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2072beb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25, skipping insertion in model container [2022-12-13 15:20:25,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:25,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:20:25,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:20:25,924 WARN L237 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_acc9ab72-768f-46f6-92d3-0f6a996d5255/sv-benchmarks/c/nla-digbench/freire1.c[712,725] [2022-12-13 15:20:25,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:20:25,944 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:20:25,953 WARN L237 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_acc9ab72-768f-46f6-92d3-0f6a996d5255/sv-benchmarks/c/nla-digbench/freire1.c[712,725] [2022-12-13 15:20:25,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:20:25,966 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:20:25,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25 WrapperNode [2022-12-13 15:20:25,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:20:25,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:20:25,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:20:25,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:20:25,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:25,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,015 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-12-13 15:20:26,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:20:26,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:20:26,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:20:26,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:20:26,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,038 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:20:26,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:20:26,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:20:26,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:20:26,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (1/1) ... [2022-12-13 15:20:26,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:20:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:20:26,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:20:26,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:20:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:20:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 15:20:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:20:26,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:20:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 15:20:26,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 15:20:26,169 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:20:26,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:20:27,295 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:20:27,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:20:27,300 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:20:27,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:20:27 BoogieIcfgContainer [2022-12-13 15:20:27,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:20:27,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:20:27,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:20:27,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:20:27,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:20:25" (1/3) ... [2022-12-13 15:20:27,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f20ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:20:27, skipping insertion in model container [2022-12-13 15:20:27,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:20:25" (2/3) ... [2022-12-13 15:20:27,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f20ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:20:27, skipping insertion in model container [2022-12-13 15:20:27,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:20:27" (3/3) ... [2022-12-13 15:20:27,310 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1.c [2022-12-13 15:20:27,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:20:27,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:20:27,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:20:27,379 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3fbb518e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:20:27,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:20:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:20:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 15:20:27,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:27,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:27,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1818803301, now seen corresponding path program 1 times [2022-12-13 15:20:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433613815] [2022-12-13 15:20:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:27,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:27,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:27,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:27,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 15:20:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:27,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:20:27,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:20:27,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:27,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:20:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433613815] [2022-12-13 15:20:27,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433613815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:27,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:27,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:20:27,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179224293] [2022-12-13 15:20:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:20:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:20:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:20:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:20:27,812 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:27,825 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-12-13 15:20:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:20:27,827 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 15:20:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:27,832 INFO L225 Difference]: With dead ends: 30 [2022-12-13 15:20:27,832 INFO L226 Difference]: Without dead ends: 12 [2022-12-13 15:20:27,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:20:27,837 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:27,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:20:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-13 15:20:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-13 15:20:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:20:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-12-13 15:20:27,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-12-13 15:20:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:27,862 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-12-13 15:20:27,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-12-13 15:20:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 15:20:27,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:27,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:27,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:20:28,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:28,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1811355551, now seen corresponding path program 1 times [2022-12-13 15:20:28,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:20:28,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486076865] [2022-12-13 15:20:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:28,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 15:20:28,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:20:28,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 15:20:28,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 15:20:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:20:28,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:20:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:20:28,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-13 15:20:28,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1798272626] [2022-12-13 15:20:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:28,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 15:20:28,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 15:20:28,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 15:20:28,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acc9ab72-768f-46f6-92d3-0f6a996d5255/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-13 15:20:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:20:29,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:20:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat