./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/exp_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/exp_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS --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 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 --- 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-4e7fbc6 [2022-11-23 01:58:42,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:58:43,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:58:43,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:58:43,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:58:43,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:58:43,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:58:43,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:58:43,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:58:43,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:58:43,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:58:43,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:58:43,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:58:43,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:58:43,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:58:43,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:58:43,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:58:43,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:58:43,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:58:43,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:58:43,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:58:43,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:58:43,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:58:43,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:58:43,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:58:43,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:58:43,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:58:43,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:58:43,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:58:43,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:58:43,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:58:43,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:58:43,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:58:43,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:58:43,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:58:43,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:58:43,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:58:43,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:58:43,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:58:43,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:58:43,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:58:43,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:58:43,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:58:43,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:58:43,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:58:43,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:58:43,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:58:43,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:58:43,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:58:43,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:58:43,167 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:58:43,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:58:43,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:58:43,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:58:43,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:58:43,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:58:43,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:58:43,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:58:43,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:58:43,171 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:58:43,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:58:43,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:58:43,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:58:43,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:58:43,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:58:43,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:58:43,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:43,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:58:43,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:58:43,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:58:43,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:58:43,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:58:43,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:58:43,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:58:43,176 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:58:43,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:58:43,176 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 [2022-11-23 01:58:43,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:58:43,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:58:43,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:58:43,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:58:43,550 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:58:43,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/float-benchs/exp_loop.c [2022-11-23 01:58:46,966 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:58:47,216 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:58:47,216 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/sv-benchmarks/c/float-benchs/exp_loop.c [2022-11-23 01:58:47,224 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data/b5635ee59/e093b86212de4f09bdb5ad9647f5b8ba/FLAGcbbffdeae [2022-11-23 01:58:47,240 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data/b5635ee59/e093b86212de4f09bdb5ad9647f5b8ba [2022-11-23 01:58:47,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:58:47,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:58:47,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:58:47,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:58:47,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:58:47,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a1742b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47, skipping insertion in model container [2022-11-23 01:58:47,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:58:47,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:58:47,458 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-11-23 01:58:47,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:58:47,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:58:47,524 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-11-23 01:58:47,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:58:47,548 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:58:47,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47 WrapperNode [2022-11-23 01:58:47,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:58:47,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:58:47,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:58:47,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:58:47,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,588 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2022-11-23 01:58:47,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:58:47,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:58:47,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:58:47,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:58:47,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:58:47,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:58:47,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:58:47,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:58:47,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (1/1) ... [2022-11-23 01:58:47,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:47,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:47,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:58:47,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:58:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:58:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:58:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:58:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:58:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:58:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:58:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 01:58:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:58:47,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:58:47,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:58:48,046 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:58:48,068 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:58:48,068 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 01:58:48,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:48 BoogieIcfgContainer [2022-11-23 01:58:48,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:58:48,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:58:48,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:58:48,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:58:48,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:47" (1/3) ... [2022-11-23 01:58:48,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0a3dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:48, skipping insertion in model container [2022-11-23 01:58:48,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:47" (2/3) ... [2022-11-23 01:58:48,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0a3dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:48, skipping insertion in model container [2022-11-23 01:58:48,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:48" (3/3) ... [2022-11-23 01:58:48,095 INFO L112 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2022-11-23 01:58:48,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:58:48,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:58:48,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:58:48,189 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;@1e162ad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:58:48,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:58:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:58:48,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:48,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:48,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash -250377569, now seen corresponding path program 1 times [2022-11-23 01:58:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618862295] [2022-11-23 01:58:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:48,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:48,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618862295] [2022-11-23 01:58:48,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618862295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:48,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:48,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:58:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268479705] [2022-11-23 01:58:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:48,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 01:58:48,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 01:58:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 01:58:48,456 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:48,474 INFO L93 Difference]: Finished difference Result 45 states and 68 transitions. [2022-11-23 01:58:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 01:58:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 01:58:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:48,485 INFO L225 Difference]: With dead ends: 45 [2022-11-23 01:58:48,485 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 01:58:48,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 01:58:48,493 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-11-23 01:58:48,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 01:58:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 01:58:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-23 01:58:48,532 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 16 [2022-11-23 01:58:48,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:48,533 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-23 01:58:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-11-23 01:58:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:58:48,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:48,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:48,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:58:48,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1261494819, now seen corresponding path program 1 times [2022-11-23 01:58:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:48,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716512966] [2022-11-23 01:58:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:48,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:48,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716512966] [2022-11-23 01:58:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716512966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:48,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:48,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:58:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557169294] [2022-11-23 01:58:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:48,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:58:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:48,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:58:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:58:48,659 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:48,683 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-23 01:58:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:58:48,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 01:58:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:48,685 INFO L225 Difference]: With dead ends: 26 [2022-11-23 01:58:48,685 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 01:58:48,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:58:48,687 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:48,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 01:58:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 01:58:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-23 01:58:48,703 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 16 [2022-11-23 01:58:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:48,705 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-23 01:58:48,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-23 01:58:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:58:48,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:48,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:58:48,712 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:48,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1675232227, now seen corresponding path program 1 times [2022-11-23 01:58:48,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:48,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659156130] [2022-11-23 01:58:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:48,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:58:48,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:58:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:58:48,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:58:48,845 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 01:58:48,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 01:58:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:58:48,854 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 01:58:48,858 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 01:58:48,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:58:48 BoogieIcfgContainer [2022-11-23 01:58:48,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 01:58:48,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 01:58:48,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 01:58:48,915 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 01:58:48,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:48" (3/4) ... [2022-11-23 01:58:48,920 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 01:58:48,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 01:58:48,921 INFO L158 Benchmark]: Toolchain (without parser) took 1675.60ms. Allocated memory is still 186.6MB. Free memory was 139.6MB in the beginning and 154.5MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:58:48,921 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory was 89.7MB in the beginning and 89.5MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:58:48,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.82ms. Allocated memory is still 186.6MB. Free memory was 139.6MB in the beginning and 128.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 01:58:48,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.33ms. Allocated memory is still 186.6MB. Free memory was 128.7MB in the beginning and 127.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:58:48,923 INFO L158 Benchmark]: Boogie Preprocessor took 30.82ms. Allocated memory is still 186.6MB. Free memory was 127.0MB in the beginning and 125.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:58:48,924 INFO L158 Benchmark]: RCFGBuilder took 449.82ms. Allocated memory is still 186.6MB. Free memory was 125.7MB in the beginning and 113.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 01:58:48,924 INFO L158 Benchmark]: TraceAbstraction took 840.46ms. Allocated memory is still 186.6MB. Free memory was 112.8MB in the beginning and 155.5MB in the end (delta: -42.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2022-11-23 01:58:48,925 INFO L158 Benchmark]: Witness Printer took 5.17ms. Allocated memory is still 186.6MB. Free memory was 155.5MB in the beginning and 154.5MB in the end (delta: 962.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:58:48,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory was 89.7MB in the beginning and 89.5MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.82ms. Allocated memory is still 186.6MB. Free memory was 139.6MB in the beginning and 128.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.33ms. Allocated memory is still 186.6MB. Free memory was 128.7MB in the beginning and 127.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.82ms. Allocated memory is still 186.6MB. Free memory was 127.0MB in the beginning and 125.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 449.82ms. Allocated memory is still 186.6MB. Free memory was 125.7MB in the beginning and 113.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 840.46ms. Allocated memory is still 186.6MB. Free memory was 112.8MB in the beginning and 155.5MB in the end (delta: -42.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * Witness Printer took 5.17ms. Allocated memory is still 186.6MB. Free memory was 155.5MB in the beginning and 154.5MB in the end (delta: 962.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 80, overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 66. Possible FailurePath: [L71] float a, b, c; [L72] int e; [L74] a = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L12] COND FALSE !(!cond) VAL [cond=1, unknown-#in~cond-unknown=1] [L75] RET assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L77] CALL, EXPR FREXP(a, &e) [L25] int x; [L26] float r; [L27] CALL, EXPR FABS(d) [L19] COND TRUE d >= 0.f [L19] return d; VAL [\result=58, d=58, unknown-#in~d-unknown=58] [L27] RET, EXPR FABS(d) [L27] float dd = FABS(d); [L29] COND TRUE dd >= 1.f [L30] x = 1 [L31] r = 2.f VAL [#in~e={5:0}, d=58, dd=58, e={5:0}, r=2, unknown-#in~d-unknown=58, x=1] [L32] COND FALSE !(r <= dd) VAL [#in~e={5:0}, d=58, dd=58, e={5:0}, r=2, unknown-#in~d-unknown=58, x=1] [L46] *e = x [L47] return dd / r; VAL [#in~e={5:0}, d=58, dd=58, e={5:0}, r=2, unknown-#in~d-unknown=58, x=1] [L77] RET, EXPR FREXP(a, &e) [L77] b = FREXP(a, &e) [L78] EXPR \read(e) [L78] CALL, EXPR LDEXP(b, e/2) [L52] float x = 1.; VAL [d=57, e=0, unknown-#in~d-unknown=57, unknown-#in~e-unknown=0, x=1] [L54] COND TRUE e >= 0 VAL [d=57, e=0, unknown-#in~d-unknown=57, unknown-#in~e-unknown=0, x=1] [L55] COND FALSE !(e > 0) VAL [d=57, e=0, unknown-#in~d-unknown=57, unknown-#in~e-unknown=0, x=1] [L66] return d * x; VAL [d=57, e=0, unknown-#in~d-unknown=57, unknown-#in~e-unknown=0, x=1] [L78] RET, EXPR LDEXP(b, e/2) [L78] c = LDEXP(b, e/2) [L80] CALL __VERIFIER_assert(c >= 0.f && c <= 1e6) [L14] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L14] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 55 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 01:58:48,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/exp_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS --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 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 --- 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-4e7fbc6 [2022-11-23 01:58:51,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:58:51,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:58:51,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:58:51,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:58:51,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:58:51,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:58:51,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:58:51,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:58:51,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:58:51,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:58:51,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:58:51,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:58:51,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:58:51,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:58:51,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:58:51,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:58:51,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:58:51,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:58:51,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:58:51,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:58:51,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:58:51,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:58:51,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:58:51,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:58:51,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:58:51,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:58:51,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:58:51,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:58:51,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:58:51,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:58:51,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:58:51,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:58:51,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:58:51,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:58:51,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:58:51,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:58:51,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:58:51,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:58:51,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:58:51,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:58:51,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-23 01:58:51,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:58:51,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:58:51,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:58:51,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:58:51,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:58:51,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:58:51,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:58:51,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:58:51,978 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:58:51,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:58:51,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:58:51,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:58:51,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:58:51,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:58:51,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:58:51,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:58:51,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 01:58:51,983 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 01:58:51,983 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 01:58:51,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:58:51,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:58:51,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:58:51,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:58:51,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:58:51,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:58:51,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:58:51,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:51,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:58:51,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:58:51,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:58:51,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 01:58:51,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 01:58:51,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:58:51,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:58:51,989 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:58:51,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:58:51,989 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 01:58:51,990 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 [2022-11-23 01:58:52,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:58:52,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:58:52,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:58:52,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:58:52,534 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:58:52,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/float-benchs/exp_loop.c [2022-11-23 01:58:55,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:58:56,205 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:58:56,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/sv-benchmarks/c/float-benchs/exp_loop.c [2022-11-23 01:58:56,213 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data/cf0101d2b/b1d942246d9048cbaf081f7fef1b2b5c/FLAG39ca27ac5 [2022-11-23 01:58:56,239 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/data/cf0101d2b/b1d942246d9048cbaf081f7fef1b2b5c [2022-11-23 01:58:56,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:58:56,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:58:56,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:58:56,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:58:56,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:58:56,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44274bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56, skipping insertion in model container [2022-11-23 01:58:56,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:58:56,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:58:56,461 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-11-23 01:58:56,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:58:56,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:58:56,522 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-11-23 01:58:56,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:58:56,554 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:58:56,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56 WrapperNode [2022-11-23 01:58:56,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:58:56,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:58:56,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:58:56,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:58:56,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,628 INFO L138 Inliner]: procedures = 21, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-11-23 01:58:56,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:58:56,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:58:56,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:58:56,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:58:56,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:58:56,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:58:56,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:58:56,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:58:56,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (1/1) ... [2022-11-23 01:58:56,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:56,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:58:56,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:58:56,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:58:56,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 01:58:56,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:58:56,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 01:58:56,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:58:56,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:58:56,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:58:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 01:58:56,882 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:58:56,885 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:58:58,471 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:58:58,478 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:58:58,478 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 01:58:58,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:58 BoogieIcfgContainer [2022-11-23 01:58:58,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:58:58,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:58:58,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:58:58,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:58:58,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:56" (1/3) ... [2022-11-23 01:58:58,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312645f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:58, skipping insertion in model container [2022-11-23 01:58:58,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:56" (2/3) ... [2022-11-23 01:58:58,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312645f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:58, skipping insertion in model container [2022-11-23 01:58:58,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:58" (3/3) ... [2022-11-23 01:58:58,496 INFO L112 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2022-11-23 01:58:58,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:58:58,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:58:58,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:58:58,624 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;@2b59f9a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:58:58,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:58:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:58:58,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:58,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:58,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -250377569, now seen corresponding path program 1 times [2022-11-23 01:58:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 01:58:58,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041731978] [2022-11-23 01:58:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:58,682 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 [2022-11-23 01:58:58,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 01:58:58,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 01:58:58,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:58:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 01:58:59,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:59,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:58:59,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 01:58:59,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041731978] [2022-11-23 01:58:59,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041731978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:59,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:59,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:58:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665084190] [2022-11-23 01:58:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:59,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 01:58:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 01:58:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 01:58:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 01:58:59,319 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:59,339 INFO L93 Difference]: Finished difference Result 45 states and 68 transitions. [2022-11-23 01:58:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 01:58:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 01:58:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:59,351 INFO L225 Difference]: With dead ends: 45 [2022-11-23 01:58:59,352 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 01:58:59,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 01:58:59,359 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-11-23 01:58:59,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 01:58:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 01:58:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-23 01:58:59,403 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 16 [2022-11-23 01:58:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:59,403 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-23 01:58:59,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:58:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-11-23 01:58:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:58:59,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:59,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:59,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:58:59,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1261494819, now seen corresponding path program 1 times [2022-11-23 01:58:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 01:58:59,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079276303] [2022-11-23 01:58:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:59,629 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 [2022-11-23 01:58:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 01:58:59,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 01:58:59,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:58:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:00,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 01:59:00,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:00,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 01:59:00,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 01:59:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:00,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:59:00,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 01:59:00,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079276303] [2022-11-23 01:59:00,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079276303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:00,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:00,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:59:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934571899] [2022-11-23 01:59:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:00,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:59:00,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 01:59:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:59:00,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:59:00,371 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:02,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:59:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:03,391 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-11-23 01:59:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:59:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 01:59:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:03,397 INFO L225 Difference]: With dead ends: 37 [2022-11-23 01:59:03,397 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 01:59:03,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:59:03,399 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:03,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 84 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 01:59:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 01:59:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-23 01:59:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-11-23 01:59:03,408 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2022-11-23 01:59:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:03,408 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-11-23 01:59:03,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-11-23 01:59:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:59:03,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:03,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:03,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:59:03,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:59:03,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1675232227, now seen corresponding path program 1 times [2022-11-23 01:59:03,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 01:59:03,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884466229] [2022-11-23 01:59:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:03,630 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 [2022-11-23 01:59:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 01:59:03,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 01:59:03,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:59:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:03,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 01:59:03,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:53,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:59:53,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 01:59:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884466229] [2022-11-23 01:59:53,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884466229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:53,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:53,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 01:59:53,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545398717] [2022-11-23 01:59:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:53,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:59:53,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 01:59:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:59:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:59:53,118 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:17,234 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:00:48,108 WARN L233 SmtUtils]: Spent 18.80s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:00:49,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:46,886 WARN L233 SmtUtils]: Spent 40.32s on a formula simplification. DAG size of input: 35 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:01:48,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:50,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:51,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:02:33,147 WARN L233 SmtUtils]: Spent 30.08s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:02:34,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:36,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:03:06,281 WARN L233 SmtUtils]: Spent 20.31s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:03:07,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:03:10,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:03:11,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:03:13,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:03:15,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:11,579 WARN L233 SmtUtils]: Spent 46.82s on a formula simplification. DAG size of input: 48 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:04:12,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:15,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:17,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:19,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:21,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:44,997 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:04:47,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:48,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:51,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:53,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:04:54,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:05:13,071 WARN L233 SmtUtils]: Spent 7.35s 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) [2022-11-23 02:05:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:05:13,146 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-23 02:05:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:05:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 02:05:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:05:13,147 INFO L225 Difference]: With dead ends: 48 [2022-11-23 02:05:13,147 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 02:05:13,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 304.9s TimeCoverageRelationStatistics Valid=127, Invalid=372, Unknown=7, NotChecked=0, Total=506 [2022-11-23 02:05:13,150 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 88 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:05:13,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 41 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 6 Unknown, 0 Unchecked, 53.1s Time] [2022-11-23 02:05:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 02:05:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 02:05:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:05:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-23 02:05:13,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 16 [2022-11-23 02:05:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:05:13,157 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-23 02:05:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:05:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-23 02:05:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 02:05:13,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:05:13,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:05:13,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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)] Ended with exit code 0 [2022-11-23 02:05:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:05:13,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:05:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:05:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -574750805, now seen corresponding path program 1 times [2022-11-23 02:05:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:05:13,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032941616] [2022-11-23 02:05:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:05:13,369 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 [2022-11-23 02:05:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:05:13,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:05:13,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:05:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:13,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 02:05:13,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:05:14,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 02:05:14,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 02:05:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:05:14,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:05:14,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:05:14,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032941616] [2022-11-23 02:05:14,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032941616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:05:14,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:05:14,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:05:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696285848] [2022-11-23 02:05:14,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:05:14,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:05:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:05:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:05:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:05:14,094 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:05:16,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:05:17,524 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-11-23 02:05:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:05:17,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 02:05:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:05:17,533 INFO L225 Difference]: With dead ends: 39 [2022-11-23 02:05:17,533 INFO L226 Difference]: Without dead ends: 32 [2022-11-23 02:05:17,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:05:17,534 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:05:17,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 72 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 02:05:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-23 02:05:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2022-11-23 02:05:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:05:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-23 02:05:17,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2022-11-23 02:05:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:05:17,545 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-23 02:05:17,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:05:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-23 02:05:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 02:05:17,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:05:17,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:05:17,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:05:17,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:05:17,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:05:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:05:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -988488213, now seen corresponding path program 1 times [2022-11-23 02:05:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:05:17,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153044993] [2022-11-23 02:05:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:05:17,771 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 [2022-11-23 02:05:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:05:17,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:05:17,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:05:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:05:18,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:06:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:06:40,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:06:40,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:06:40,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153044993] [2022-11-23 02:06:40,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153044993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:06:40,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:06:40,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 02:06:40,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596030129] [2022-11-23 02:06:40,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:06:40,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 02:06:40,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:06:40,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 02:06:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=166, Unknown=2, NotChecked=0, Total=210 [2022-11-23 02:06:40,873 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:07:08,527 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:07:10,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:07:11,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:07:46,421 WARN L233 SmtUtils]: Spent 24.48s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:07:47,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:08:45,824 WARN L233 SmtUtils]: Spent 42.63s on a formula simplification. DAG size of input: 35 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:08:47,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:09:50,203 WARN L233 SmtUtils]: Spent 45.13s on a formula simplification. DAG size of input: 42 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:09:52,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:09:55,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:09:57,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:09:59,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 02:10:04,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:10:06,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:10:07,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:10:08,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:10:31,549 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:10:33,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:10:35,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:10:36,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:10:38,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:10:41,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:10:44,675 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)))) (let ((.cse2 (fp.mul c_currentRoundingMode .cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (and (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) .cse0) (not (fp.gt .cse1 |c_ULTIMATE.start_FREXP_~dd~0#1|)) (= |c_ULTIMATE.start_FREXP_~r~0#1| .cse2) (not (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| .cse3)) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (not (fp.gt .cse1 |ULTIMATE.start_FREXP_~dd~0#1|)) (not (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse3)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1|) .cse0) (= |c_ULTIMATE.start_FREXP_#res#1| (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse2)))) (= |c_ULTIMATE.start_LDEXP_~x~1#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse2) |c_ULTIMATE.start_LDEXP_~d#1|) (not (fp.gt .cse1 |ULTIMATE.start_FREXP_~dd~0#1|)) (not (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse3)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-11-23 02:10:53,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:11:40,970 WARN L233 SmtUtils]: Spent 10.13s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:11:43,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:11:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:11:43,542 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-23 02:11:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:11:43,543 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 02:11:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:11:43,543 INFO L225 Difference]: With dead ends: 32 [2022-11-23 02:11:43,544 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 02:11:43,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 303.5s TimeCoverageRelationStatistics Valid=100, Invalid=340, Unknown=26, NotChecked=40, Total=506 [2022-11-23 02:11:43,545 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 60.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:11:43,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 61 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 5 Unknown, 1 Unchecked, 60.3s Time] [2022-11-23 02:11:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 02:11:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 02:11:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-23 02:11:43,553 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2022-11-23 02:11:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:11:43,553 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-23 02:11:43,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-23 02:11:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 02:11:43,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:11:43,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:43,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:11:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:11:43,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:11:43,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1334689899, now seen corresponding path program 1 times [2022-11-23 02:11:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:11:43,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774965031] [2022-11-23 02:11:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:43,772 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 [2022-11-23 02:11:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:11:43,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:11:43,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 02:11:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:44,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:11:44,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:44,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 02:11:44,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 02:11:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:44,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:11:45,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-23 02:11:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:11:46,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:11:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774965031] [2022-11-23 02:11:46,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774965031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:11:46,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:11:46,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-23 02:11:46,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475366053] [2022-11-23 02:11:46,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:11:46,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:11:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:11:46,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:11:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:11:46,273 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:50,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:11:54,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:11:56,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:12:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:12:00,283 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2022-11-23 02:12:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:12:00,306 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 02:12:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:12:00,307 INFO L225 Difference]: With dead ends: 71 [2022-11-23 02:12:00,307 INFO L226 Difference]: Without dead ends: 65 [2022-11-23 02:12:00,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:12:00,310 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 139 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:12:00,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 116 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-23 02:12:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-23 02:12:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 32. [2022-11-23 02:12:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-23 02:12:00,327 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2022-11-23 02:12:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:12:00,328 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-23 02:12:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-23 02:12:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 02:12:00,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:12:00,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:12:00,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:00,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:12:00,548 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:12:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1036640219, now seen corresponding path program 1 times [2022-11-23 02:12:00,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:12:00,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131904566] [2022-11-23 02:12:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:00,549 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 [2022-11-23 02:12:00,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:12:00,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:12:00,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:12:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:00,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:12:00,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:12:01,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-23 02:12:01,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 02:12:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:12:01,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:12:01,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-23 02:12:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:12:03,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:12:03,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131904566] [2022-11-23 02:12:03,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131904566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:12:03,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:12:03,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-23 02:12:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435149237] [2022-11-23 02:12:03,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:12:03,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:12:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:12:03,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:12:03,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:12:03,878 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:09,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:12:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:12:12,618 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-11-23 02:12:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:12:12,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-23 02:12:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:12:12,633 INFO L225 Difference]: With dead ends: 61 [2022-11-23 02:12:12,633 INFO L226 Difference]: Without dead ends: 54 [2022-11-23 02:12:12,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:12:12,634 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 88 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:12:12,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 129 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 02:12:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-23 02:12:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2022-11-23 02:12:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-23 02:12:12,649 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2022-11-23 02:12:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:12:12,649 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-23 02:12:12,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-23 02:12:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 02:12:12,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:12:12,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:12:12,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:12,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:12:12,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:12:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1450377627, now seen corresponding path program 1 times [2022-11-23 02:12:12,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:12:12,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814847212] [2022-11-23 02:12:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:12,865 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 [2022-11-23 02:12:12,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:12:12,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:12:12,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c6e9a4-f570-402b-82d0-f90d6bc288dc/bin/uautomizer-QkZJyEgLgS/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 (9)] Waiting until timeout for monitored process [2022-11-23 02:12:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:13,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 02:12:13,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:27,770 INFO L328 TraceCheckSpWp]: Computing backward predicates...