./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro --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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- 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-8393723 [2022-11-18 18:35:26,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:35:26,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:35:26,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:35:26,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:35:26,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:35:26,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:35:26,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:35:26,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:35:26,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:35:26,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:35:26,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:35:26,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:35:26,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:35:26,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:35:26,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:35:26,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:35:26,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:35:26,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:35:26,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:35:26,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:35:26,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:35:26,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:35:26,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:35:26,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:35:26,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:35:26,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:35:26,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:35:26,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:35:26,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:35:26,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:35:26,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:35:26,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:35:26,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:35:26,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:35:26,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:35:26,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:35:26,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:35:26,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:35:26,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:35:26,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:35:26,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:35:26,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:35:26,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:35:26,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:35:26,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:35:26,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:35:26,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:35:26,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:35:26,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:35:26,162 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:35:26,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:35:26,164 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:35:26,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:35:26,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:35:26,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:35:26,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:35:26,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:35:26,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:35:26,165 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:35:26,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:35:26,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:35:26,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:35:26,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:35:26,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:35:26,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:35:26,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:35:26,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:35:26,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:35:26,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:35:26,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:35:26,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:35:26,170 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:35:26,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:35:26,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:35:26,171 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-11-18 18:35:26,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:35:26,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:35:26,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:35:26,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:35:26,557 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:35:26,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-18 18:35:26,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/690903068/e0961a5e8246422d9fbc17bdd685a486/FLAG5b7f9b114 [2022-11-18 18:35:27,281 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:35:27,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-18 18:35:27,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/690903068/e0961a5e8246422d9fbc17bdd685a486/FLAG5b7f9b114 [2022-11-18 18:35:27,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/690903068/e0961a5e8246422d9fbc17bdd685a486 [2022-11-18 18:35:27,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:35:27,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:35:27,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:35:27,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:35:27,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:35:27,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:27,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e8a926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27, skipping insertion in model container [2022-11-18 18:35:27,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:27,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:35:27,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:35:27,897 WARN L234 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-18 18:35:27,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:35:27,933 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:35:27,954 WARN L234 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-18 18:35:27,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:35:27,989 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:35:27,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27 WrapperNode [2022-11-18 18:35:27,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:35:27,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:35:27,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:35:27,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:35:28,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,041 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-11-18 18:35:28,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:35:28,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:35:28,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:35:28,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:35:28,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:35:28,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:35:28,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:35:28,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:35:28,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (1/1) ... [2022-11-18 18:35:28,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:35:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:28,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:35:28,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:35:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:35:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:35:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:35:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:35:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:35:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:35:28,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:35:28,304 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:35:28,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:35:28,462 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:35:28,462 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:35:28,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:28 BoogieIcfgContainer [2022-11-18 18:35:28,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:35:28,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:35:28,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:35:28,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:35:28,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:35:27" (1/3) ... [2022-11-18 18:35:28,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbbb239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:35:28, skipping insertion in model container [2022-11-18 18:35:28,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:27" (2/3) ... [2022-11-18 18:35:28,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbbb239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:35:28, skipping insertion in model container [2022-11-18 18:35:28,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:28" (3/3) ... [2022-11-18 18:35:28,482 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-11-18 18:35:28,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:35:28,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:35:28,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:35:28,618 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;@6001b82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:35:28,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:35:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:35:28,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:35:28,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:28,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:28,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-11-18 18:35:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:28,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380143737] [2022-11-18 18:35:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:35:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:35:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:35:28,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:28,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380143737] [2022-11-18 18:35:28,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380143737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:28,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:28,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:28,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847035568] [2022-11-18 18:35:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:28,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:35:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:29,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:35:29,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:35:29,032 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:35:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:29,063 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-18 18:35:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:35:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-18 18:35:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:29,084 INFO L225 Difference]: With dead ends: 42 [2022-11-18 18:35:29,085 INFO L226 Difference]: Without dead ends: 18 [2022-11-18 18:35:29,090 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 [2022-11-18 18:35:29,096 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-11-18 18:35:29,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:35:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-18 18:35:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-18 18:35:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:35:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-18 18:35:29,242 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-11-18 18:35:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:29,243 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-18 18:35:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:35:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-18 18:35:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:35:29,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:29,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:35:29,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-11-18 18:35:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:29,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182264551] [2022-11-18 18:35:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:29,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:35:29,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:35:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:35:29,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:35:29,397 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:35:29,399 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:35:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:35:29,408 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:35:29,412 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:35:29,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:35:29 BoogieIcfgContainer [2022-11-18 18:35:29,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:35:29,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:35:29,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:35:29,455 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:35:29,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:28" (3/4) ... [2022-11-18 18:35:29,461 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 18:35:29,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:35:29,463 INFO L158 Benchmark]: Toolchain (without parser) took 1831.61ms. Allocated memory is still 123.7MB. Free memory was 90.7MB in the beginning and 93.4MB in the end (delta: -2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:35:29,464 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 79.7MB. Free memory is still 34.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:35:29,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.88ms. Allocated memory is still 123.7MB. Free memory was 90.4MB in the beginning and 99.8MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:35:29,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.15ms. Allocated memory is still 123.7MB. Free memory was 99.8MB in the beginning and 98.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:35:29,471 INFO L158 Benchmark]: Boogie Preprocessor took 44.82ms. Allocated memory is still 123.7MB. Free memory was 98.3MB in the beginning and 97.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:35:29,475 INFO L158 Benchmark]: RCFGBuilder took 376.50ms. Allocated memory is still 123.7MB. Free memory was 97.1MB in the beginning and 87.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:35:29,476 INFO L158 Benchmark]: TraceAbstraction took 987.18ms. Allocated memory is still 123.7MB. Free memory was 86.7MB in the beginning and 94.0MB in the end (delta: -7.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:35:29,476 INFO L158 Benchmark]: Witness Printer took 6.93ms. Allocated memory is still 123.7MB. Free memory was 94.0MB in the beginning and 93.4MB in the end (delta: 581.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:35:29,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 79.7MB. Free memory is still 34.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.88ms. Allocated memory is still 123.7MB. Free memory was 90.4MB in the beginning and 99.8MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.15ms. Allocated memory is still 123.7MB. Free memory was 99.8MB in the beginning and 98.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.82ms. Allocated memory is still 123.7MB. Free memory was 98.3MB in the beginning and 97.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 376.50ms. Allocated memory is still 123.7MB. Free memory was 97.1MB in the beginning and 87.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 987.18ms. Allocated memory is still 123.7MB. Free memory was 86.7MB in the beginning and 94.0MB in the end (delta: -7.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.93ms. Allocated memory is still 123.7MB. Free memory was 94.0MB in the beginning and 93.4MB in the end (delta: 581.9kB). 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: 10]: 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 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=53, i=0, X=54] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=53, i=0, X=54] [L26] S = Y [L27] Y = X [L28] R = X - S VAL [D=53, i=0, S=55, X=54, Y=54] [L29] COND TRUE R <= -D [L29] Y = S - D VAL [D=53, i=0, S=55, X=54] [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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 [2022-11-18 18:35:29,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro --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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- 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-8393723 [2022-11-18 18:35:32,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:35:32,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:35:32,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:35:32,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:35:32,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:35:32,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:35:32,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:35:32,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:35:32,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:35:32,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:35:32,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:35:32,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:35:32,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:35:32,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:35:32,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:35:32,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:35:32,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:35:32,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:35:32,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:35:32,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:35:32,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:35:32,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:35:32,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:35:32,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:35:32,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:35:32,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:35:32,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:35:32,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:35:32,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:35:32,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:35:32,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:35:32,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:35:32,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:35:32,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:35:32,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:35:32,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:35:32,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:35:32,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:35:32,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:35:32,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:35:32,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 18:35:32,295 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:35:32,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:35:32,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:35:32,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:35:32,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:35:32,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:35:32,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:35:32,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:35:32,299 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:35:32,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:35:32,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:35:32,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:35:32,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:35:32,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:35:32,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:35:32,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:35:32,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:35:32,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:35:32,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:35:32,302 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:35:32,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:35:32,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:35:32,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:35:32,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:35:32,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:35:32,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:35:32,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:35:32,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:35:32,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:35:32,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:35:32,306 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:35:32,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:35:32,306 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:35:32,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:35:32,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:35:32,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:35:32,307 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-11-18 18:35:32,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:35:32,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:35:32,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:35:32,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:35:32,762 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:35:32,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-18 18:35:32,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/abe117df0/ce54596445d746b58f24e0fc5b90b688/FLAG1c8045deb [2022-11-18 18:35:33,513 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:35:33,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-18 18:35:33,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/abe117df0/ce54596445d746b58f24e0fc5b90b688/FLAG1c8045deb [2022-11-18 18:35:33,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/data/abe117df0/ce54596445d746b58f24e0fc5b90b688 [2022-11-18 18:35:33,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:35:33,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:35:33,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:35:33,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:35:33,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:35:33,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:35:33" (1/1) ... [2022-11-18 18:35:33,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52eab930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:33, skipping insertion in model container [2022-11-18 18:35:33,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:35:33" (1/1) ... [2022-11-18 18:35:33,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:35:33,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:35:34,094 WARN L234 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-18 18:35:34,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:35:34,126 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:35:34,160 WARN L234 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_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-18 18:35:34,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:35:34,191 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:35:34,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34 WrapperNode [2022-11-18 18:35:34,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:35:34,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:35:34,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:35:34,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:35:34,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,240 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-18 18:35:34,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:35:34,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:35:34,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:35:34,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:35:34,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,270 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:35:34,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:35:34,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:35:34,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:35:34,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (1/1) ... [2022-11-18 18:35:34,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:35:34,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:34,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:35:34,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:35:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:35:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:35:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:35:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:35:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:35:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:35:34,466 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:35:34,469 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:35:34,981 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:35:34,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:35:34,989 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:35:34,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:34 BoogieIcfgContainer [2022-11-18 18:35:34,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:35:34,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:35:35,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:35:35,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:35:35,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:35:33" (1/3) ... [2022-11-18 18:35:35,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b08235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:35:35, skipping insertion in model container [2022-11-18 18:35:35,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:34" (2/3) ... [2022-11-18 18:35:35,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b08235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:35:35, skipping insertion in model container [2022-11-18 18:35:35,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:34" (3/3) ... [2022-11-18 18:35:35,011 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-11-18 18:35:35,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:35:35,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:35:35,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:35:35,149 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;@411bce6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:35:35,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:35:35,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:35:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:35:35,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:35,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:35,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-11-18 18:35:35,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772781253] [2022-11-18 18:35:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:35,200 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 [2022-11-18 18:35:35,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:35,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:35:35,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:35,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:35:35,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:35,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:35,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772781253] [2022-11-18 18:35:35,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772781253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:35,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:35,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877184082] [2022-11-18 18:35:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:35,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:35:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:35:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:35:35,498 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:35:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:35,521 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-18 18:35:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:35:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-18 18:35:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:35,533 INFO L225 Difference]: With dead ends: 42 [2022-11-18 18:35:35,533 INFO L226 Difference]: Without dead ends: 18 [2022-11-18 18:35:35,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:35:35,541 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-11-18 18:35:35,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:35:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-18 18:35:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-18 18:35:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:35:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-18 18:35:35,601 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-11-18 18:35:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:35,602 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-18 18:35:35,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:35:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-18 18:35:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:35:35,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:35,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:35,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 18:35:35,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:35,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-11-18 18:35:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:35,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663364594] [2022-11-18 18:35:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:35,811 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 [2022-11-18 18:35:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:35,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:35:35,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:36,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:35:36,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:36,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:36,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:36,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663364594] [2022-11-18 18:35:36,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663364594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:36,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:36,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:35:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922992688] [2022-11-18 18:35:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:36,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:35:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:35:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:35:36,794 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:35:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:37,908 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-11-18 18:35:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:35:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-18 18:35:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:37,918 INFO L225 Difference]: With dead ends: 40 [2022-11-18 18:35:37,918 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 18:35:37,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:37,923 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:37,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 104 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 15 Unchecked, 0.9s Time] [2022-11-18 18:35:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 18:35:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2022-11-18 18:35:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:35:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-18 18:35:37,946 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2022-11-18 18:35:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:37,947 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-18 18:35:37,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:35:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-18 18:35:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:35:37,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:37,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:37,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:38,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1173892842, now seen corresponding path program 1 times [2022-11-18 18:35:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:38,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771502273] [2022-11-18 18:35:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:38,162 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 [2022-11-18 18:35:38,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:38,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:35:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:38,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:35:38,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:38,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:38,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:38,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771502273] [2022-11-18 18:35:38,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771502273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:38,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:38,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:35:38,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204623217] [2022-11-18 18:35:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:38,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:35:38,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:35:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:35:38,851 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:35:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:40,267 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-11-18 18:35:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:40,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-18 18:35:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:40,269 INFO L225 Difference]: With dead ends: 50 [2022-11-18 18:35:40,269 INFO L226 Difference]: Without dead ends: 48 [2022-11-18 18:35:40,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:35:40,271 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:40,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 88 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 27 Unchecked, 1.1s Time] [2022-11-18 18:35:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-18 18:35:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 30. [2022-11-18 18:35:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:35:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-18 18:35:40,283 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-11-18 18:35:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:40,284 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-18 18:35:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:35:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-18 18:35:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:35:40,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:40,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:40,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:40,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:40,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:40,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1173833260, now seen corresponding path program 1 times [2022-11-18 18:35:40,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:40,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541822625] [2022-11-18 18:35:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:40,510 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 [2022-11-18 18:35:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:40,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:35:40,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:40,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:35:40,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:40,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:41,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:41,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541822625] [2022-11-18 18:35:41,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541822625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:41,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:41,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-18 18:35:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98595796] [2022-11-18 18:35:41,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:41,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:35:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:41,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:35:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:35:41,283 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:35:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:43,532 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-18 18:35:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:35:43,539 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2022-11-18 18:35:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:43,540 INFO L225 Difference]: With dead ends: 45 [2022-11-18 18:35:43,540 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 18:35:43,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:35:43,542 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:43,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 135 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 18:35:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 18:35:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-11-18 18:35:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:35:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-18 18:35:43,553 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-11-18 18:35:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:43,553 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-18 18:35:43,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:35:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-18 18:35:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 18:35:43,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:43,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:43,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:43,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1809540222, now seen corresponding path program 1 times [2022-11-18 18:35:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955932466] [2022-11-18 18:35:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:43,778 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 [2022-11-18 18:35:43,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:43,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:35:43,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:35:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:44,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:44,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:19,204 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:36,338 WARN L837 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~X~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~S~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main_~X~0#1| (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 128.0))) (fp.leq |ULTIMATE.start_main_~D~0#1| ((_ to_fp 8 24) roundNearestTiesToEven 16.0)) (fp.leq (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~S~0#1|) (fp.neg |ULTIMATE.start_main_~D~0#1|)) (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~S~0#1| |ULTIMATE.start_main_~D~0#1|) (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 129.0)))))) is different from false [2022-11-18 18:37:38,346 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~X~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~S~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main_~X~0#1| (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 128.0))) (fp.leq |ULTIMATE.start_main_~D~0#1| ((_ to_fp 8 24) roundNearestTiesToEven 16.0)) (fp.leq (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~S~0#1|) (fp.neg |ULTIMATE.start_main_~D~0#1|)) (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~S~0#1| |ULTIMATE.start_main_~D~0#1|) (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 129.0)))))) is different from true [2022-11-18 18:37:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:37:38,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:16,930 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 16.0)) (.cse1 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~X~0#1| |c_ULTIMATE.start_main_~Y~0#1|)) (.cse2 ((_ to_fp 8 24) c_currentRoundingMode 129.0))) (and (forall ((|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24))) (or (not (fp.leq |ULTIMATE.start_main_~D~0#1| .cse0)) (not (fp.leq .cse1 (fp.neg |ULTIMATE.start_main_~D~0#1|))) (fp.geq (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~D~0#1|) (fp.neg .cse2)) (not (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24))))) (forall ((|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24))) (or (not (fp.leq |ULTIMATE.start_main_~D~0#1| .cse0)) (not (fp.leq .cse1 (fp.neg |ULTIMATE.start_main_~D~0#1|))) (not (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24))) (fp.leq (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~D~0#1|) .cse2))))) is different from true [2022-11-18 18:38:16,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955932466] [2022-11-18 18:38:16,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955932466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:16,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1206188415] [2022-11-18 18:38:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:16,932 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:38:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:38:16,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:38:16,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-18 18:38:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:17,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:38:17,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 9 refuted. 1 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:38:57,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:43,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1206188415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:43,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:43,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2022-11-18 18:39:43,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916611406] [2022-11-18 18:39:43,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:43,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:39:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:43,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:39:43,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=607, Unknown=30, NotChecked=106, Total=870 [2022-11-18 18:39:43,149 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 22 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 18:42:50,382 WARN L233 SmtUtils]: Spent 54.49s on a formula simplification. DAG size of input: 45 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:42:52,394 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (.cse5 (exists ((|ULTIMATE.start_main_~X~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~S~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main_~X~0#1| (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 128.0))) (fp.leq |ULTIMATE.start_main_~D~0#1| ((_ to_fp 8 24) roundNearestTiesToEven 16.0)) (fp.leq (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~S~0#1|) (fp.neg |ULTIMATE.start_main_~D~0#1|)) (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~S~0#1| |ULTIMATE.start_main_~D~0#1|) (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 129.0))))))) (.cse2 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))) (and (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 129.0))) (let ((.cse0 (fp.geq |c_ULTIMATE.start_main_~Y~0#1| (fp.neg .cse4))) (.cse1 (fp.leq |c_ULTIMATE.start_main_~Y~0#1| .cse4))) (or (and .cse0 .cse1 .cse2) (and .cse3 (or (not .cse0) (not .cse1)))))) .cse5 (or (and .cse3 .cse5) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-18 18:42:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:52,412 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2022-11-18 18:42:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:42:52,412 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2022-11-18 18:42:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:52,413 INFO L225 Difference]: With dead ends: 57 [2022-11-18 18:42:52,413 INFO L226 Difference]: Without dead ends: 54 [2022-11-18 18:42:52,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 339.5s TimeCoverageRelationStatistics Valid=258, Invalid=1247, Unknown=67, NotChecked=234, Total=1806 [2022-11-18 18:42:52,416 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:52,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 90 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 113 Unchecked, 0.4s Time] [2022-11-18 18:42:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-18 18:42:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-11-18 18:42:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:42:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-11-18 18:42:52,439 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 35 [2022-11-18 18:42:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:52,440 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-11-18 18:42:52,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 17 states have internal predecessors, (35), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 18:42:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-11-18 18:42:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 18:42:52,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:52,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:52,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:52,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:42:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:42:52,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -259447071, now seen corresponding path program 1 times [2022-11-18 18:42:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:52,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138527703] [2022-11-18 18:42:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:52,850 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 [2022-11-18 18:42:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:52,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:42:52,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:42:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:53,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:42:53,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:37,950 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:44:55,240 WARN L837 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~X~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~S~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~S~0#1|))) (and (not (fp.leq (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~S~0#1| |ULTIMATE.start_main_~D~0#1|) ((_ to_fp 8 24) roundNearestTiesToEven 129.0))) (fp.leq |ULTIMATE.start_main_~X~0#1| ((_ to_fp 8 24) roundNearestTiesToEven 128.0)) (fp.leq |ULTIMATE.start_main_~D~0#1| ((_ to_fp 8 24) roundNearestTiesToEven 16.0)) (fp.geq .cse0 |ULTIMATE.start_main_~D~0#1|) (not (fp.leq .cse0 (fp.neg |ULTIMATE.start_main_~D~0#1|)))))) is different from false [2022-11-18 18:44:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:44:57,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:46:20,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:46:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138527703] [2022-11-18 18:46:20,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138527703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:46:20,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113942989] [2022-11-18 18:46:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:20,283 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:46:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:46:20,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:46:20,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_647c8e4c-283a-4de5-9c34-9b4ed1cf4f14/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-18 18:46:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:20,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:46:20,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:47:55,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:15,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113942989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:15,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:15,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 23 [2022-11-18 18:49:15,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345725260] [2022-11-18 18:49:15,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:15,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:49:15,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:49:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=788, Unknown=62, NotChecked=60, Total=1056 [2022-11-18 18:49:15,016 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 18:49:47,118 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode 16.0))) (and (exists ((|ULTIMATE.start_main_~X~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~S~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub c_currentRoundingMode |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~S~0#1|)) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 128.0))) (and (not (fp.leq .cse0 (fp.neg |ULTIMATE.start_main_~D~0#1|))) (fp.geq |ULTIMATE.start_main_~X~0#1| (fp.neg .cse1)) (fp.leq |ULTIMATE.start_main_~D~0#1| .cse2) (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24)) (fp.geq .cse0 |ULTIMATE.start_main_~D~0#1|) (fp.leq |ULTIMATE.start_main_~X~0#1| .cse1) (fp.geq |ULTIMATE.start_main_~S~0#1| (fp.neg ((_ to_fp 8 24) c_currentRoundingMode 129.0))) (= |c_ULTIMATE.start_main_~Y~0#1| (fp.add c_currentRoundingMode |ULTIMATE.start_main_~S~0#1| |ULTIMATE.start_main_~D~0#1|))))) (exists ((|ULTIMATE.start_main_~D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~D~0#1_17| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~R~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main_~D~0#1_17| (_ +zero 8 24)) (fp.leq |ULTIMATE.start_main_~D~0#1| .cse2) (not (fp.leq |ULTIMATE.start_main_~R~0#1| (fp.neg |ULTIMATE.start_main_~D~0#1|))) (fp.geq |ULTIMATE.start_main_~D~0#1| (_ +zero 8 24)) (fp.geq |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~D~0#1|) (= |c_ULTIMATE.start_main_~Y~0#1| (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |v_ULTIMATE.start_main_~D~0#1_17|) |ULTIMATE.start_main_~D~0#1|)) (fp.leq |v_ULTIMATE.start_main_~D~0#1_17| .cse2))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false