./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8 --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 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 --- 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-e04fb08 [2022-11-16 12:05:12,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:05:12,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:05:12,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:05:12,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:05:12,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:05:12,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:05:12,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:05:12,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:05:12,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:05:12,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:05:12,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:05:12,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:05:12,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:05:12,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:05:12,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:05:12,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:05:12,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:05:12,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:05:12,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:05:12,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:05:12,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:05:12,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:05:12,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:05:12,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:05:12,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:05:12,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:05:12,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:05:12,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:05:12,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:05:12,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:05:12,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:05:12,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:05:12,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:05:12,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:05:12,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:05:12,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:05:12,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:05:12,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:05:12,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:05:12,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:05:12,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:05:12,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:05:12,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:05:12,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:05:12,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:05:12,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:05:12,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:05:12,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:05:12,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:12,987 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:12,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:12,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:12,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:05:12,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:12,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:12,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:12,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:12,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:12,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:12,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:12,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:12,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:12,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:12,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:12,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:12,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:12,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:12,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:12,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:12,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:05:12,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:05:12,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:12,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:12,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:12,993 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_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 [2022-11-16 12:05:13,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:13,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:13,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:13,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:13,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:13,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2022-11-16 12:05:13,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/2eb208195/d6a3ede93590499ba93d083b91f74a54/FLAG89e7ad8e9 [2022-11-16 12:05:13,837 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:13,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2022-11-16 12:05:13,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/2eb208195/d6a3ede93590499ba93d083b91f74a54/FLAG89e7ad8e9 [2022-11-16 12:05:14,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/2eb208195/d6a3ede93590499ba93d083b91f74a54 [2022-11-16 12:05:14,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:14,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:14,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:14,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:14,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:14,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502c1f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14, skipping insertion in model container [2022-11-16 12:05:14,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:14,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:14,488 WARN L229 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_de451f77-20d5-47d5-a450-dbed1a448dce/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2022-11-16 12:05:14,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:14,499 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:14,543 WARN L229 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_de451f77-20d5-47d5-a450-dbed1a448dce/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2022-11-16 12:05:14,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:14,558 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:14,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14 WrapperNode [2022-11-16 12:05:14,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:14,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:14,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:14,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:14,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,622 INFO L138 Inliner]: procedures = 19, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 278 [2022-11-16 12:05:14,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:14,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:14,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:14,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:14,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:14,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:14,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:14,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:14,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (1/1) ... [2022-11-16 12:05:14,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:14,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:14,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:14,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:05:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:05:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-16 12:05:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:05:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-16 12:05:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:05:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:05:14,929 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:14,931 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:15,379 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:15,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:15,395 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-16 12:05:15,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:15 BoogieIcfgContainer [2022-11-16 12:05:15,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:15,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:15,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:15,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:15,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:14" (1/3) ... [2022-11-16 12:05:15,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e440a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:15, skipping insertion in model container [2022-11-16 12:05:15,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:14" (2/3) ... [2022-11-16 12:05:15,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e440a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:15, skipping insertion in model container [2022-11-16 12:05:15,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:15" (3/3) ... [2022-11-16 12:05:15,407 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a.c [2022-11-16 12:05:15,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:15,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:05:15,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:15,482 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;@7a4984fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:15,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:05:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 63 states have internal predecessors, (107), 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) [2022-11-16 12:05:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:05:15,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:15,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:15,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1833067158, now seen corresponding path program 1 times [2022-11-16 12:05:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:15,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673885370] [2022-11-16 12:05:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:15,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:15,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673885370] [2022-11-16 12:05:15,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673885370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:15,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:15,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989166325] [2022-11-16 12:05:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:15,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:05:15,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:05:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:15,666 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 63 states have internal predecessors, (107), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 12:05:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:15,693 INFO L93 Difference]: Finished difference Result 126 states and 212 transitions. [2022-11-16 12:05:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:05:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 12:05:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:15,704 INFO L225 Difference]: With dead ends: 126 [2022-11-16 12:05:15,705 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:05:15,708 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 [2022-11-16 12:05:15,711 INFO L413 NwaCegarLoop]: 87 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, 87 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 [2022-11-16 12:05:15,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:05:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 12:05:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4) internal successors, (84), 60 states have internal predecessors, (84), 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) [2022-11-16 12:05:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2022-11-16 12:05:15,814 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 9 [2022-11-16 12:05:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:15,814 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2022-11-16 12:05:15,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 12:05:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2022-11-16 12:05:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:05:15,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:15,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:05:15,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1555283655, now seen corresponding path program 1 times [2022-11-16 12:05:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:15,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022257185] [2022-11-16 12:05:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:15,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:15,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022257185] [2022-11-16 12:05:15,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022257185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:15,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:15,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:15,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225559417] [2022-11-16 12:05:15,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:15,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:15,913 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 12:05:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:15,983 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2022-11-16 12:05:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:15,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-16 12:05:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:15,990 INFO L225 Difference]: With dead ends: 166 [2022-11-16 12:05:15,990 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 12:05:15,991 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:05:15,993 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 71 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:15,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 214 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 12:05:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2022-11-16 12:05:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.39) internal successors, (139), 100 states have internal predecessors, (139), 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) [2022-11-16 12:05:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 139 transitions. [2022-11-16 12:05:16,025 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 139 transitions. Word has length 10 [2022-11-16 12:05:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:16,026 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 139 transitions. [2022-11-16 12:05:16,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 12:05:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 139 transitions. [2022-11-16 12:05:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:05:16,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:16,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:16,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:05:16,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:16,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1924508793, now seen corresponding path program 1 times [2022-11-16 12:05:16,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:16,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154864782] [2022-11-16 12:05:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:16,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:16,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154864782] [2022-11-16 12:05:16,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154864782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:16,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:16,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181182706] [2022-11-16 12:05:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:16,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:05:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:05:16,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:16,256 INFO L87 Difference]: Start difference. First operand 101 states and 139 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 12:05:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:16,318 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2022-11-16 12:05:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:05:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-16 12:05:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:16,321 INFO L225 Difference]: With dead ends: 120 [2022-11-16 12:05:16,321 INFO L226 Difference]: Without dead ends: 111 [2022-11-16 12:05:16,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:05:16,323 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 75 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 97 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-16 12:05:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2022-11-16 12:05:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 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) [2022-11-16 12:05:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2022-11-16 12:05:16,335 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 11 [2022-11-16 12:05:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:16,336 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2022-11-16 12:05:16,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 12:05:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2022-11-16 12:05:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:05:16,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:16,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:05:16,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1867250491, now seen corresponding path program 1 times [2022-11-16 12:05:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:16,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552560769] [2022-11-16 12:05:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:16,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:05:16,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:05:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:05:16,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:05:16,402 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:05:16,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:05:16,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:05:16,409 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 12:05:16,413 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:05:16,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:05:16 BoogieIcfgContainer [2022-11-16 12:05:16,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:05:16,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:05:16,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:05:16,442 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:05:16,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:15" (3/4) ... [2022-11-16 12:05:16,446 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:05:16,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:05:16,448 INFO L158 Benchmark]: Toolchain (without parser) took 2206.14ms. Allocated memory is still 115.3MB. Free memory was 76.0MB in the beginning and 55.7MB in the end (delta: 20.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-11-16 12:05:16,448 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:05:16,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.28ms. Allocated memory is still 115.3MB. Free memory was 75.7MB in the beginning and 87.4MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:05:16,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.04ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 84.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:05:16,450 INFO L158 Benchmark]: Boogie Preprocessor took 67.99ms. Allocated memory is still 115.3MB. Free memory was 84.8MB in the beginning and 82.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:05:16,451 INFO L158 Benchmark]: RCFGBuilder took 705.74ms. Allocated memory is still 115.3MB. Free memory was 82.1MB in the beginning and 60.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 12:05:16,451 INFO L158 Benchmark]: TraceAbstraction took 1042.56ms. Allocated memory is still 115.3MB. Free memory was 60.2MB in the beginning and 55.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-11-16 12:05:16,452 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 115.3MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:05:16,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.28ms. Allocated memory is still 115.3MB. Free memory was 75.7MB in the beginning and 87.4MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.04ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 84.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.99ms. Allocated memory is still 115.3MB. Free memory was 84.8MB in the beginning and 82.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 705.74ms. Allocated memory is still 115.3MB. Free memory was 82.1MB in the beginning and 60.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1042.56ms. Allocated memory is still 115.3MB. Free memory was 60.2MB in the beginning and 55.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 115.3MB. Free memory is still 55.7MB. 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: 200]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 199, overapproximation of someUnaryDOUBLEoperation at line 113, overapproximation of bitwiseAnd at line 127, overapproximation of someUnaryFLOAToperation at line 195, overapproximation of someBinaryArithmeticFLOAToperation at line 130. Possible FailurePath: [L109-L117] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L26] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L109-L117] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L26] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L109-L117] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L195] float x = -0.0f; [L196] CALL, EXPR __ieee754_asinf(x) [L120] float t, w, p, q, c, r, s; [L121] __int32_t hx, ix; VAL [\old(x)=1000000000000000000000000000008, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000008] [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000008, huge_asin=1000000000000000000000000000000, hx=1065353216, ix=1065353216, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000008] [L128] COND TRUE ix == 0x3f800000 [L130] return x * pio2_hi_asin + x * pio2_lo_asin; VAL [\old(x)=1000000000000000000000000000008, huge_asin=1000000000000000000000000000000, hx=1065353216, ix=1065353216, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000008] [L196] RET, EXPR __ieee754_asinf(x) [L196] float res = __ieee754_asinf(x); [L199] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000009, res == -0.0f && __signbit_float(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000008] [L199] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L200] reach_error() VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000009, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000008] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 398 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 315 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=3, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2022-11-16 12:05:16,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8 --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 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 --- 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-e04fb08 [2022-11-16 12:05:18,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:05:18,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:05:18,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:05:18,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:05:18,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:05:18,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:05:18,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:05:18,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:05:18,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:05:18,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:05:18,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:05:18,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:05:18,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:05:18,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:05:18,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:05:18,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:05:18,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:05:18,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:05:18,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:05:18,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:05:18,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:05:18,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:05:18,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:05:18,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:05:18,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:05:18,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:05:18,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:05:18,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:05:18,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:05:18,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:05:18,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:05:18,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:05:18,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:05:18,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:05:18,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:05:18,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:05:18,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:05:18,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:05:18,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:05:18,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:05:18,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:05:18,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:05:18,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:05:18,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:05:18,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:05:18,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:05:18,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:05:18,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:05:18,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:18,853 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:18,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:18,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:18,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:18,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:18,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:18,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:18,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:18,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:05:18,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:05:18,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:05:18,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:18,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:18,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:18,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:18,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:18,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:18,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:18,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:18,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:18,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:18,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:18,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:05:18,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:05:18,857 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:18,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:18,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:18,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:05:18,858 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_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 [2022-11-16 12:05:19,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:19,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:19,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:19,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:19,238 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:19,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2022-11-16 12:05:19,309 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/301a77dc6/f1e79dbdc8f847ffb0b11501a587e479/FLAGd3b422ee5 [2022-11-16 12:05:19,890 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:19,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2022-11-16 12:05:19,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/301a77dc6/f1e79dbdc8f847ffb0b11501a587e479/FLAGd3b422ee5 [2022-11-16 12:05:20,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/data/301a77dc6/f1e79dbdc8f847ffb0b11501a587e479 [2022-11-16 12:05:20,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:20,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:20,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:20,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:20,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:20,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c00bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20, skipping insertion in model container [2022-11-16 12:05:20,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:20,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:20,507 WARN L229 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_de451f77-20d5-47d5-a450-dbed1a448dce/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2022-11-16 12:05:20,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:20,558 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:20,644 WARN L229 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_de451f77-20d5-47d5-a450-dbed1a448dce/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2022-11-16 12:05:20,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:20,674 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:20,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20 WrapperNode [2022-11-16 12:05:20,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:20,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:20,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:20,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:20,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,757 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 257 [2022-11-16 12:05:20,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:20,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:20,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:20,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:20,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:20,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:20,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:20,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:20,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (1/1) ... [2022-11-16 12:05:20,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:20,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:20,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:20,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:05:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:05:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-16 12:05:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:05:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-16 12:05:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:05:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:05:21,063 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:21,065 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:33,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:33,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:33,338 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-16 12:05:33,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:33 BoogieIcfgContainer [2022-11-16 12:05:33,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:33,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:33,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:33,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:33,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:20" (1/3) ... [2022-11-16 12:05:33,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e29b368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:33, skipping insertion in model container [2022-11-16 12:05:33,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:20" (2/3) ... [2022-11-16 12:05:33,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e29b368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:33, skipping insertion in model container [2022-11-16 12:05:33,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:33" (3/3) ... [2022-11-16 12:05:33,351 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a.c [2022-11-16 12:05:33,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:33,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:05:33,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:33,467 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;@40ebe547, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:33,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:05:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 59 states have internal predecessors, (97), 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) [2022-11-16 12:05:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:05:33,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:33,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:33,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:33,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1900514974, now seen corresponding path program 1 times [2022-11-16 12:05:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:33,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502832230] [2022-11-16 12:05:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:33,499 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 [2022-11-16 12:05:33,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:33,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:33,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:34,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:05:34,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:34,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:34,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:34,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502832230] [2022-11-16 12:05:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502832230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:34,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:34,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:05:34,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461221139] [2022-11-16 12:05:34,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:34,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:05:34,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:05:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:34,208 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 59 states have internal predecessors, (97), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 12:05:34,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:34,236 INFO L93 Difference]: Finished difference Result 118 states and 192 transitions. [2022-11-16 12:05:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:05:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 12:05:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:34,248 INFO L225 Difference]: With dead ends: 118 [2022-11-16 12:05:34,248 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:05:34,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:05:34,255 INFO L413 NwaCegarLoop]: 78 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, 78 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 [2022-11-16 12:05:34,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:05:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:05:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-16 12:05:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 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) [2022-11-16 12:05:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2022-11-16 12:05:34,294 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 9 [2022-11-16 12:05:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:34,295 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2022-11-16 12:05:34,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 12:05:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2022-11-16 12:05:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:05:34,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:34,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:34,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:34,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:34,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1487835839, now seen corresponding path program 1 times [2022-11-16 12:05:34,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:34,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933557525] [2022-11-16 12:05:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:34,529 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 [2022-11-16 12:05:34,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:34,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:34,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:35,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:35,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:35,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:35,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:35,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933557525] [2022-11-16 12:05:35,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933557525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:35,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:35,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196994864] [2022-11-16 12:05:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:35,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:35,565 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-11-16 12:05:39,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:39,479 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-11-16 12:05:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-11-16 12:05:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:39,484 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:05:39,485 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:05:39,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:39,487 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:39,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 264 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 11 Unchecked, 3.7s Time] [2022-11-16 12:05:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:05:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-16 12:05:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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) [2022-11-16 12:05:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-11-16 12:05:39,497 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 10 [2022-11-16 12:05:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:39,498 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-16 12:05:39,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-11-16 12:05:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-11-16 12:05:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:05:39,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:39,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:39,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:39,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:39,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1242386432, now seen corresponding path program 1 times [2022-11-16 12:05:39,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:39,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633356651] [2022-11-16 12:05:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:39,721 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 [2022-11-16 12:05:39,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:39,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:39,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (4)] Waiting until timeout for monitored process [2022-11-16 12:05:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:40,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:40,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:40,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633356651] [2022-11-16 12:05:40,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633356651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:40,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:40,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724273981] [2022-11-16 12:05:40,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:40,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:40,707 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-16 12:05:43,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:43,889 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-11-16 12:05:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-11-16 12:05:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:43,892 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:05:43,892 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:05:43,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:43,894 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 4 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:43,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 259 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 1 Unknown, 10 Unchecked, 3.0s Time] [2022-11-16 12:05:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:05:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-16 12:05:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 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) [2022-11-16 12:05:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2022-11-16 12:05:43,904 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 11 [2022-11-16 12:05:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:43,908 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2022-11-16 12:05:43,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-16 12:05:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2022-11-16 12:05:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:05:43,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:43,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:43,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:44,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:44,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:44,124 INFO L85 PathProgramCache]: Analyzing trace with hash 601224780, now seen corresponding path program 1 times [2022-11-16 12:05:44,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:44,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238659185] [2022-11-16 12:05:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:44,125 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 [2022-11-16 12:05:44,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:44,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:44,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (5)] Waiting until timeout for monitored process [2022-11-16 12:05:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:45,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:45,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:46,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:46,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:46,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238659185] [2022-11-16 12:05:46,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238659185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:46,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:46,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:46,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591689956] [2022-11-16 12:05:46,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:46,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:46,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:46,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:46,038 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-16 12:05:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:46,488 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2022-11-16 12:05:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2022-11-16 12:05:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:46,491 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:05:46,491 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:05:46,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:46,492 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 4 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:46,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 248 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 9 Unchecked, 0.3s Time] [2022-11-16 12:05:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:05:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-16 12:05:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 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) [2022-11-16 12:05:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2022-11-16 12:05:46,498 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 13 [2022-11-16 12:05:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:46,498 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2022-11-16 12:05:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-16 12:05:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2022-11-16 12:05:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:05:46,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:46,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:46,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (5)] Ended with exit code 0 [2022-11-16 12:05:46,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:46,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1089938183, now seen corresponding path program 1 times [2022-11-16 12:05:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797155182] [2022-11-16 12:05:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:46,709 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 [2022-11-16 12:05:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:46,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:46,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (6)] Waiting until timeout for monitored process [2022-11-16 12:05:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:47,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:05:47,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:47,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:47,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:47,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797155182] [2022-11-16 12:05:47,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797155182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:47,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:47,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:47,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003563212] [2022-11-16 12:05:47,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:47,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:47,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:47,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:47,524 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-16 12:05:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:48,052 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2022-11-16 12:05:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:48,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-11-16 12:05:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:48,054 INFO L225 Difference]: With dead ends: 69 [2022-11-16 12:05:48,054 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 12:05:48,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:48,056 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:48,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 190 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:05:48,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 12:05:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2022-11-16 12:05:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 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) [2022-11-16 12:05:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-11-16 12:05:48,066 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 14 [2022-11-16 12:05:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:48,066 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-11-16 12:05:48,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-16 12:05:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-11-16 12:05:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:05:48,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:48,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:48,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:48,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:48,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 980104924, now seen corresponding path program 1 times [2022-11-16 12:05:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251200085] [2022-11-16 12:05:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:48,288 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 [2022-11-16 12:05:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:48,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:48,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (7)] Waiting until timeout for monitored process [2022-11-16 12:05:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:48,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:05:48,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:49,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:49,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:05:49,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251200085] [2022-11-16 12:05:49,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251200085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:49,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:49,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:05:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378220968] [2022-11-16 12:05:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:49,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:05:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:05:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:05:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:05:49,597 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-11-16 12:05:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:51,008 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-11-16 12:05:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:05:51,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 18 [2022-11-16 12:05:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:51,010 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:05:51,010 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:05:51,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:05:51,011 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 94 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:51,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 444 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:05:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:05:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-16 12:05:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 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) [2022-11-16 12:05:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2022-11-16 12:05:51,018 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2022-11-16 12:05:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:51,018 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2022-11-16 12:05:51,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2022-11-16 12:05:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2022-11-16 12:05:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:05:51,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:51,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:51,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:51,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:51,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1026077179, now seen corresponding path program 1 times [2022-11-16 12:05:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:05:51,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136983577] [2022-11-16 12:05:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:51,243 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 [2022-11-16 12:05:51,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:05:51,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:05:51,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8)] Waiting until timeout for monitored process [2022-11-16 12:05:51,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:05:51,780 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-16 12:05:51,783 INFO L158 Benchmark]: Toolchain (without parser) took 31552.47ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 47.9MB in the beginning and 56.9MB in the end (delta: -9.0MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-11-16 12:05:51,784 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:05:51,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.48ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 48.5MB in the end (delta: -828.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:05:51,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.66ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 46.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:05:51,785 INFO L158 Benchmark]: Boogie Preprocessor took 79.75ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 43.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:05:51,786 INFO L158 Benchmark]: RCFGBuilder took 12498.55ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 43.3MB in the beginning and 71.3MB in the end (delta: -28.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-16 12:05:51,786 INFO L158 Benchmark]: TraceAbstraction took 18439.62ms. Allocated memory is still 96.5MB. Free memory was 70.5MB in the beginning and 56.9MB in the end (delta: 13.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-11-16 12:05:51,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2022-11-16 12:05:51,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8)] Forceful destruction successful, exit code 139 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.48ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 48.5MB in the end (delta: -828.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.66ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 46.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.75ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 43.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 12498.55ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 43.3MB in the beginning and 71.3MB in the end (delta: -28.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 18439.62ms. Allocated memory is still 96.5MB. Free memory was 70.5MB in the beginning and 56.9MB in the end (delta: 13.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 12:05:51,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de451f77-20d5-47d5-a450-dbed1a448dce/bin/uautomizer-tPACEb0tL8/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 (8) with exit command (exit)) Received EOF on stdin. No stderr output.