./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:29:28,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:29:28,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:29:28,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:29:28,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:29:28,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:29:28,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:29:28,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:29:28,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:29:28,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:29:28,375 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:29:28,376 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:29:28,376 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:29:28,376 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:29:28,377 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:29:28,377 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:29:28,378 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:29:28,378 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:29:28,378 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:29:28,379 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:29:28,379 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:29:28,380 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:29:28,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:29:28,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:29:28,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:29:28,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:29:28,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:29:28,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:29:28,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:29:28,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:29:28,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:29:28,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:29:28,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:29:28,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:29:28,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:29:28,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:29:28,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:29:28,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:29:28,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:28,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:29:28,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:29:28,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:29:28,387 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:29:28,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:29:28,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:29:28,388 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:29:28,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:29:28,388 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2024-11-09 04:29:28,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:29:28,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:29:28,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:29:28,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:29:28,682 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:29:28,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c Unable to find full path for "g++" [2024-11-09 04:29:30,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:29:31,010 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:29:31,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2024-11-09 04:29:31,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data/39d227261/a5af5615111947c9b8d2007c7c21e725/FLAGb46f143be [2024-11-09 04:29:31,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data/39d227261/a5af5615111947c9b8d2007c7c21e725 [2024-11-09 04:29:31,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:29:31,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:29:31,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:31,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:29:31,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:29:31,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699028a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31, skipping insertion in model container [2024-11-09 04:29:31,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:29:31,353 WARN L250 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_e5fbc5a3-3b6b-4994-adf1-b31305f65762/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2024-11-09 04:29:31,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:31,467 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:29:31,478 WARN L250 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_e5fbc5a3-3b6b-4994-adf1-b31305f65762/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2024-11-09 04:29:31,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:31,533 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:29:31,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31 WrapperNode [2024-11-09 04:29:31,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:31,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:31,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:29:31,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:29:31,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,588 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 190 [2024-11-09 04:29:31,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:31,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:29:31,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:29:31,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:29:31,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:29:31,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:29:31,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:29:31,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:29:31,632 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:31,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:29:31,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:29:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-09 04:29:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-09 04:29:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:29:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:29:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 04:29:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 04:29:31,804 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:29:31,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:29:32,393 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-09 04:29:32,394 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:29:32,802 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:29:32,802 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 04:29:32,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:32 BoogieIcfgContainer [2024-11-09 04:29:32,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:29:32,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:29:32,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:29:32,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:29:32,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:29:31" (1/3) ... [2024-11-09 04:29:32,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cf6c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:29:32, skipping insertion in model container [2024-11-09 04:29:32,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (2/3) ... [2024-11-09 04:29:32,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cf6c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:29:32, skipping insertion in model container [2024-11-09 04:29:32,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:32" (3/3) ... [2024-11-09 04:29:32,818 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2024-11-09 04:29:32,842 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:29:32,843 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:29:32,922 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:29:32,930 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@28387e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:29:32,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:29:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 36 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 04:29:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 04:29:32,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:32,946 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:32,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:32,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1792792650, now seen corresponding path program 1 times [2024-11-09 04:29:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592221468] [2024-11-09 04:29:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:33,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:33,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592221468] [2024-11-09 04:29:33,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592221468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:33,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:33,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:29:33,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586028123] [2024-11-09 04:29:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:33,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:29:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:29:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:29:33,872 INFO L87 Difference]: Start difference. First operand has 45 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 36 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:34,212 INFO L93 Difference]: Finished difference Result 113 states and 186 transitions. [2024-11-09 04:29:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:29:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-09 04:29:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:34,239 INFO L225 Difference]: With dead ends: 113 [2024-11-09 04:29:34,239 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 04:29:34,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:29:34,256 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 23 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:34,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 384 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:29:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 04:29:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2024-11-09 04:29:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 38 states have internal predecessors, (50), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-09 04:29:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2024-11-09 04:29:34,345 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 24 [2024-11-09 04:29:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:34,345 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2024-11-09 04:29:34,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2024-11-09 04:29:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 04:29:34,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:34,349 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:34,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:29:34,349 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:34,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -411749818, now seen corresponding path program 1 times [2024-11-09 04:29:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535220566] [2024-11-09 04:29:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:34,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:34,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535220566] [2024-11-09 04:29:34,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535220566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:34,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:34,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:29:34,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856112547] [2024-11-09 04:29:34,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:34,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:29:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:34,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:29:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:34,569 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:34,686 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2024-11-09 04:29:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:29:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2024-11-09 04:29:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:34,688 INFO L225 Difference]: With dead ends: 78 [2024-11-09 04:29:34,689 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 04:29:34,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:34,691 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 14 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:34,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 240 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:29:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 04:29:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2024-11-09 04:29:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 47 states have internal predecessors, (65), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-09 04:29:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2024-11-09 04:29:34,702 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 90 transitions. Word has length 27 [2024-11-09 04:29:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:34,703 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 90 transitions. [2024-11-09 04:29:34,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 90 transitions. [2024-11-09 04:29:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 04:29:34,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:34,705 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:34,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:29:34,705 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:34,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:34,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1845244966, now seen corresponding path program 1 times [2024-11-09 04:29:34,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:34,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91424823] [2024-11-09 04:29:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:34,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:35,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91424823] [2024-11-09 04:29:35,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91424823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:35,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:35,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:29:35,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680558872] [2024-11-09 04:29:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:35,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:29:35,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:29:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:29:35,347 INFO L87 Difference]: Start difference. First operand 61 states and 90 transitions. Second operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:35,605 INFO L93 Difference]: Finished difference Result 92 states and 133 transitions. [2024-11-09 04:29:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:29:35,606 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-09 04:29:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:35,607 INFO L225 Difference]: With dead ends: 92 [2024-11-09 04:29:35,607 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 04:29:35,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:29:35,609 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 31 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:35,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 422 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:29:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 04:29:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2024-11-09 04:29:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 46 states have internal predecessors, (63), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-09 04:29:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 87 transitions. [2024-11-09 04:29:35,619 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 87 transitions. Word has length 28 [2024-11-09 04:29:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:35,620 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 87 transitions. [2024-11-09 04:29:35,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 87 transitions. [2024-11-09 04:29:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 04:29:35,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:35,622 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:35,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:29:35,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:35,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -335992826, now seen corresponding path program 1 times [2024-11-09 04:29:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:35,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985851105] [2024-11-09 04:29:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:35,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:29:35,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:35,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985851105] [2024-11-09 04:29:35,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985851105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:35,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820630475] [2024-11-09 04:29:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:35,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:35,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:35,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:29:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:36,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:29:36,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:36,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:29:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820630475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:29:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [756537076] [2024-11-09 04:29:36,609 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:29:36,610 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:29:36,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:29:36,620 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:29:36,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:29:37,372 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 04:29:37,380 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 46 for LOIs [2024-11-09 04:29:37,514 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:29:39,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '846#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-09 04:29:39,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:29:39,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:29:39,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 17 [2024-11-09 04:29:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967716437] [2024-11-09 04:29:39,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:29:39,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:29:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:29:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 04:29:39,272 INFO L87 Difference]: Start difference. First operand 59 states and 87 transitions. Second operand has 17 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:29:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:39,591 INFO L93 Difference]: Finished difference Result 101 states and 149 transitions. [2024-11-09 04:29:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:29:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2024-11-09 04:29:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:39,593 INFO L225 Difference]: With dead ends: 101 [2024-11-09 04:29:39,593 INFO L226 Difference]: Without dead ends: 68 [2024-11-09 04:29:39,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 04:29:39,595 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 25 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:39,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 529 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:29:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-09 04:29:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2024-11-09 04:29:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 42 states have internal predecessors, (56), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-09 04:29:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2024-11-09 04:29:39,604 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 28 [2024-11-09 04:29:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:39,604 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2024-11-09 04:29:39,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:29:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2024-11-09 04:29:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 04:29:39,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:39,606 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:39,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:29:39,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:39,812 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:39,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1532719114, now seen corresponding path program 1 times [2024-11-09 04:29:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:39,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560186834] [2024-11-09 04:29:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:39,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:40,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:40,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560186834] [2024-11-09 04:29:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560186834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:40,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999235740] [2024-11-09 04:29:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:40,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:40,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:40,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:40,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:29:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:40,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 04:29:40,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:40,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:29:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:40,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999235740] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:40,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:29:40,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2024-11-09 04:29:40,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666041254] [2024-11-09 04:29:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:40,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:29:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:29:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2024-11-09 04:29:40,974 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:41,283 INFO L93 Difference]: Finished difference Result 74 states and 102 transitions. [2024-11-09 04:29:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:29:41,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2024-11-09 04:29:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:41,285 INFO L225 Difference]: With dead ends: 74 [2024-11-09 04:29:41,286 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 04:29:41,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-09 04:29:41,287 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:41,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 307 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:29:41,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 04:29:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2024-11-09 04:29:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 49 states have internal predecessors, (64), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-09 04:29:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 86 transitions. [2024-11-09 04:29:41,308 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 86 transitions. Word has length 31 [2024-11-09 04:29:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:41,309 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 86 transitions. [2024-11-09 04:29:41,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 86 transitions. [2024-11-09 04:29:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 04:29:41,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:41,310 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:41,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:29:41,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:41,512 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:41,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2059412522, now seen corresponding path program 1 times [2024-11-09 04:29:41,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:41,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375510600] [2024-11-09 04:29:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:29:42,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375510600] [2024-11-09 04:29:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375510600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717172277] [2024-11-09 04:29:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:42,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:42,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:42,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:42,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:29:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:42,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:29:42,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:42,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:29:42,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717172277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:42,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:29:42,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 21 [2024-11-09 04:29:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181401306] [2024-11-09 04:29:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:42,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:29:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:29:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-11-09 04:29:42,690 INFO L87 Difference]: Start difference. First operand 62 states and 86 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:42,958 INFO L93 Difference]: Finished difference Result 84 states and 116 transitions. [2024-11-09 04:29:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:29:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2024-11-09 04:29:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:42,960 INFO L225 Difference]: With dead ends: 84 [2024-11-09 04:29:42,961 INFO L226 Difference]: Without dead ends: 74 [2024-11-09 04:29:42,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:29:42,962 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:42,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 486 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:29:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-09 04:29:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-09 04:29:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 58 states have internal predecessors, (74), 12 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (17), 13 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-09 04:29:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 103 transitions. [2024-11-09 04:29:42,972 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 103 transitions. Word has length 32 [2024-11-09 04:29:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:42,972 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 103 transitions. [2024-11-09 04:29:42,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 103 transitions. [2024-11-09 04:29:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 04:29:42,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:42,974 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:42,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:29:43,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:43,179 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:43,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1016843939, now seen corresponding path program 1 times [2024-11-09 04:29:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918262196] [2024-11-09 04:29:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:44,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918262196] [2024-11-09 04:29:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918262196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287805819] [2024-11-09 04:29:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:44,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:44,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:44,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:29:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:44,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:29:44,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:44,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:29:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287805819] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:45,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:29:45,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16, 13] total 30 [2024-11-09 04:29:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894040870] [2024-11-09 04:29:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:45,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:29:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:29:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2024-11-09 04:29:45,256 INFO L87 Difference]: Start difference. First operand 74 states and 103 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:45,640 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-09 04:29:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:29:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2024-11-09 04:29:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:45,642 INFO L225 Difference]: With dead ends: 87 [2024-11-09 04:29:45,642 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 04:29:45,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 04:29:45,644 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:45,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 332 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:29:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 04:29:45,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-09 04:29:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 61 states have internal predecessors, (78), 12 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (17), 13 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-09 04:29:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 107 transitions. [2024-11-09 04:29:45,654 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 107 transitions. Word has length 32 [2024-11-09 04:29:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:45,654 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 107 transitions. [2024-11-09 04:29:45,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2024-11-09 04:29:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 04:29:45,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:45,660 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:45,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 04:29:45,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 04:29:45,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:45,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1866350038, now seen corresponding path program 2 times [2024-11-09 04:29:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:45,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077443344] [2024-11-09 04:29:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:46,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077443344] [2024-11-09 04:29:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077443344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:46,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:46,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 04:29:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211292632] [2024-11-09 04:29:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:46,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:29:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:29:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:29:46,372 INFO L87 Difference]: Start difference. First operand 77 states and 107 transitions. Second operand has 11 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:46,662 INFO L93 Difference]: Finished difference Result 124 states and 174 transitions. [2024-11-09 04:29:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:29:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-09 04:29:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:46,663 INFO L225 Difference]: With dead ends: 124 [2024-11-09 04:29:46,663 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 04:29:46,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:29:46,664 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 31 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:46,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 595 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:29:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 04:29:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2024-11-09 04:29:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 68 states have internal predecessors, (88), 14 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (21), 16 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-09 04:29:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-09 04:29:46,677 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 32 [2024-11-09 04:29:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:46,677 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-09 04:29:46,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:46,677 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-09 04:29:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 04:29:46,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:46,679 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:46,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 04:29:46,679 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:46,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash -406693687, now seen corresponding path program 1 times [2024-11-09 04:29:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963122807] [2024-11-09 04:29:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:29:47,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963122807] [2024-11-09 04:29:47,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963122807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454826531] [2024-11-09 04:29:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:47,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:47,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:47,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:47,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:29:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:47,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:29:47,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:29:47,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:29:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:29:48,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454826531] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:48,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:29:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 12] total 19 [2024-11-09 04:29:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885279377] [2024-11-09 04:29:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:48,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:29:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:29:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:29:48,206 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:48,318 INFO L93 Difference]: Finished difference Result 94 states and 128 transitions. [2024-11-09 04:29:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:29:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2024-11-09 04:29:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:48,320 INFO L225 Difference]: With dead ends: 94 [2024-11-09 04:29:48,320 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 04:29:48,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-09 04:29:48,321 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 3 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:48,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 227 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:29:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 04:29:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2024-11-09 04:29:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 64 states have internal predecessors, (81), 12 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (17), 13 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-09 04:29:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2024-11-09 04:29:48,332 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 32 [2024-11-09 04:29:48,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:48,333 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2024-11-09 04:29:48,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2024-11-09 04:29:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 04:29:48,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:48,334 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:48,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 04:29:48,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:48,539 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:48,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:48,539 INFO L85 PathProgramCache]: Analyzing trace with hash 557221540, now seen corresponding path program 1 times [2024-11-09 04:29:48,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:48,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526233296] [2024-11-09 04:29:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:48,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:48,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526233296] [2024-11-09 04:29:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526233296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784178737] [2024-11-09 04:29:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:48,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:48,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:48,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:29:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:48,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 04:29:48,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:50,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:29:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784178737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:50,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:29:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2024-11-09 04:29:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120857074] [2024-11-09 04:29:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:50,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:29:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:29:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:29:50,302 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:50,795 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2024-11-09 04:29:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:29:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-09 04:29:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:50,798 INFO L225 Difference]: With dead ends: 98 [2024-11-09 04:29:50,798 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 04:29:50,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-09 04:29:50,799 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:50,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 412 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:29:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 04:29:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2024-11-09 04:29:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 65 states have internal predecessors, (81), 12 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (17), 13 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-09 04:29:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-11-09 04:29:50,823 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 33 [2024-11-09 04:29:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:50,823 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-11-09 04:29:50,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-11-09 04:29:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 04:29:50,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:50,825 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:50,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 04:29:51,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 04:29:51,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:51,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash -190479875, now seen corresponding path program 1 times [2024-11-09 04:29:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:51,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200418583] [2024-11-09 04:29:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:51,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:51,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200418583] [2024-11-09 04:29:51,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200418583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739876076] [2024-11-09 04:29:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:51,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:51,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:51,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:51,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:29:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:51,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 04:29:51,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:51,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:29:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 04:29:51,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739876076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:29:51,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537778322] [2024-11-09 04:29:51,672 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 04:29:51,672 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:29:51,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:29:51,672 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:29:51,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:29:52,628 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2024-11-09 04:29:52,708 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2024-11-09 04:29:52,806 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:29:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [537778322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:56,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:29:56,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [11, 9, 9] total 40 [2024-11-09 04:29:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398562073] [2024-11-09 04:29:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:56,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 04:29:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 04:29:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1434, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 04:29:56,204 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:29:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:58,391 INFO L93 Difference]: Finished difference Result 147 states and 206 transitions. [2024-11-09 04:29:58,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 04:29:58,392 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-11-09 04:29:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:58,393 INFO L225 Difference]: With dead ends: 147 [2024-11-09 04:29:58,394 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 04:29:58,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=162, Invalid=2000, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 04:29:58,395 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:58,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 280 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 04:29:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 04:29:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2024-11-09 04:29:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 75 states have internal predecessors, (91), 14 states have call successors, (14), 4 states have call predecessors, (14), 8 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-09 04:29:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2024-11-09 04:29:58,414 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 34 [2024-11-09 04:29:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:58,415 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2024-11-09 04:29:58,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:29:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2024-11-09 04:29:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 04:29:58,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:58,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:58,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 04:29:58,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:58,621 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:58,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1548386133, now seen corresponding path program 1 times [2024-11-09 04:29:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:58,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97844558] [2024-11-09 04:29:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:58,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:29:58,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97844558] [2024-11-09 04:29:58,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97844558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272639698] [2024-11-09 04:29:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:58,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:58,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:58,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:29:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:58,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:29:58,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 04:29:58,808 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:29:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272639698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:58,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:29:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 04:29:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121855655] [2024-11-09 04:29:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:58,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:29:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:29:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:58,810 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:58,901 INFO L93 Difference]: Finished difference Result 187 states and 259 transitions. [2024-11-09 04:29:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:29:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-09 04:29:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:58,903 INFO L225 Difference]: With dead ends: 187 [2024-11-09 04:29:58,903 INFO L226 Difference]: Without dead ends: 100 [2024-11-09 04:29:58,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:58,904 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:58,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:29:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-09 04:29:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2024-11-09 04:29:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 79 states have internal predecessors, (95), 14 states have call successors, (14), 4 states have call predecessors, (14), 9 states have return successors, (32), 16 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-09 04:29:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2024-11-09 04:29:58,921 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 37 [2024-11-09 04:29:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:58,922 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2024-11-09 04:29:58,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2024-11-09 04:29:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 04:29:58,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:58,923 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:58,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 04:29:59,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:59,124 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:59,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1460860851, now seen corresponding path program 1 times [2024-11-09 04:29:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101442185] [2024-11-09 04:29:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:29:59,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101442185] [2024-11-09 04:29:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101442185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567817444] [2024-11-09 04:29:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:59,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:59,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:59,192 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:59,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:29:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:59,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:29:59,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 04:29:59,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:29:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567817444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:59,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:29:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 04:29:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594437362] [2024-11-09 04:29:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:59,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:29:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:29:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:59,296 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:59,387 INFO L93 Difference]: Finished difference Result 194 states and 273 transitions. [2024-11-09 04:29:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:29:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-09 04:29:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:59,388 INFO L225 Difference]: With dead ends: 194 [2024-11-09 04:29:59,389 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 04:29:59,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:29:59,390 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:59,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:29:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 04:29:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-09 04:29:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 82 states have internal predecessors, (98), 14 states have call successors, (14), 4 states have call predecessors, (14), 10 states have return successors, (37), 16 states have call predecessors, (37), 12 states have call successors, (37) [2024-11-09 04:29:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2024-11-09 04:29:59,412 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 38 [2024-11-09 04:29:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:59,413 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2024-11-09 04:29:59,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2024-11-09 04:29:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 04:29:59,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:59,414 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:59,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 04:29:59,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 04:29:59,619 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:59,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:59,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1796239023, now seen corresponding path program 1 times [2024-11-09 04:29:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:59,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89006056] [2024-11-09 04:29:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:29:59,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 04:29:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:29:59,711 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 04:29:59,712 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 04:29:59,713 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 04:29:59,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 04:29:59,718 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:59,746 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:29:59,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:29:59 BoogieIcfgContainer [2024-11-09 04:29:59,750 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 04:29:59,750 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 04:29:59,750 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 04:29:59,751 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 04:29:59,751 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:32" (3/4) ... [2024-11-09 04:29:59,754 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 04:29:59,755 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 04:29:59,756 INFO L158 Benchmark]: Toolchain (without parser) took 28714.79ms. Allocated memory was 134.2MB in the beginning and 308.3MB in the end (delta: 174.1MB). Free memory was 103.2MB in the beginning and 170.5MB in the end (delta: -67.3MB). Peak memory consumption was 108.3MB. Max. memory is 16.1GB. [2024-11-09 04:29:59,756 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:29:59,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.99ms. Allocated memory is still 134.2MB. Free memory was 103.2MB in the beginning and 87.0MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 04:29:59,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.04ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 84.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:29:59,757 INFO L158 Benchmark]: Boogie Preprocessor took 36.91ms. Allocated memory is still 134.2MB. Free memory was 84.9MB in the beginning and 83.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:29:59,757 INFO L158 Benchmark]: RCFGBuilder took 1173.38ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 83.3MB in the beginning and 124.7MB in the end (delta: -41.4MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-11-09 04:29:59,757 INFO L158 Benchmark]: TraceAbstraction took 26943.04ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 123.6MB in the beginning and 170.5MB in the end (delta: -46.9MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. [2024-11-09 04:29:59,758 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 308.3MB. Free memory is still 170.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:29:59,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.99ms. Allocated memory is still 134.2MB. Free memory was 103.2MB in the beginning and 87.0MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.04ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 84.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.91ms. Allocated memory is still 134.2MB. Free memory was 84.9MB in the beginning and 83.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1173.38ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 83.3MB in the beginning and 124.7MB in the end (delta: -41.4MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * TraceAbstraction took 26943.04ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 123.6MB in the beginning and 170.5MB in the end (delta: -46.9MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 308.3MB. Free memory is still 170.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 111, overapproximation of shiftRight at line 118, overapproximation of bitwiseAnd at line 127. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; VAL [ea=127, eb=127] [L252] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L81] return (__retres4); [L252] RET, EXPR base2flt(0, 0) VAL [ea=127, eb=127] [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=4328521728] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=4328521728, e=127, m=4328521728] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=4328521728, e=127, m=4328521728] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=4328521728, e=127, m=4328521728] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=4328521728, e=127, m=4328521728] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=4328521728, e=127, m=4328521728] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=4328521728, __retres4=4294967295, m=4328521728] [L81] return (__retres4); [L253] RET, EXPR base2flt(ma, ea) VAL [ea=127, eb=127, ma=4328521728, zero=0] [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=127, \old(m)=33554432] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, m=33554432] [L81] return (__retres4); [L254] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, ea=127, eb=127, ma=4328521728, mb=33554432, zero=0] [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) [L259] COND TRUE a > zero [L260] tmp = 1 [L264] sa = tmp [L266] COND FALSE !(b < zero) [L269] COND TRUE b > zero [L270] tmp___0 = 1 [L274] sb = tmp___0 [L277] CALL addflt(a, b) [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; [L95] COND FALSE !(a < b) VAL [a=4294967295, b=4294967295] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) [L110] ea = (int )(a >> 24U) - 128 [L111] EXPR ma | (1U << 24U) [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) [L113] eb = (int )(b >> 24U) - 128 [L114] EXPR mb | (1U << 24U) [L114] mb = mb | (1U << 24U) [L115] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L115] RET __VERIFIER_assert(ea >= eb) VAL [a=4294967295, ea=127, eb=127, ma=16777217, mb=16777216] [L116] delta = ea - eb [L117] COND FALSE !(!(delta < sizeof(mb) * 8)) [L118] EXPR mb >> delta [L118] mb = mb >> delta [L120] COND FALSE !(! mb) [L126] ma = ma + mb [L127] ma & (1U << 25U) VAL [a=4294967295, ea=127, ma=33554433] [L127] COND FALSE !(ma & (1U << 25U)) [L140] CALL __VERIFIER_assert(ma < 1U << 25U) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0] [L18] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.8s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 281 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 4441 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3829 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2826 IncrementalHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 612 mSDtfsCounter, 2826 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 677 GetRequests, 437 SyntacticMatches, 4 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=13, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 125 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 745 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 835 ConstructedInterpolants, 0 QuantifiedInterpolants, 2986 SizeOfPredicates, 24 NumberOfNonLiveVariables, 998 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 283/345 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: OVERALL_TIME: 1.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 30, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 29, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 45, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 69, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 11, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 30, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 304, DAG_COMPRESSION_RETAINED_NODES: 72, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 04:29:59,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:30:02,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:30:02,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 04:30:02,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:30:02,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:30:02,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:30:02,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:30:02,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:30:02,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:30:02,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:30:02,333 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:30:02,333 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:30:02,334 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:30:02,335 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:30:02,338 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:30:02,338 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:30:02,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:30:02,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:30:02,340 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:30:02,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:30:02,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:30:02,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:30:02,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:30:02,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:30:02,345 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:30:02,345 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:30:02,345 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:30:02,345 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:30:02,346 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:30:02,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:30:02,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:30:02,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:30:02,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:30:02,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:30:02,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:30:02,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:30:02,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:30:02,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:30:02,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:30:02,349 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:30:02,349 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:02,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:30:02,351 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:30:02,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2024-11-09 04:30:02,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:30:02,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:30:02,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:30:02,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:30:02,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:30:02,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c Unable to find full path for "g++" [2024-11-09 04:30:05,051 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:30:05,308 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:30:05,309 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2024-11-09 04:30:05,321 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data/f76813846/66189ca76a394408a35cc4f9ff6ab805/FLAG9a487d08e [2024-11-09 04:30:05,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/data/f76813846/66189ca76a394408a35cc4f9ff6ab805 [2024-11-09 04:30:05,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:30:05,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:30:05,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:30:05,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:30:05,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:30:05,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd4a087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05, skipping insertion in model container [2024-11-09 04:30:05,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:30:05,611 WARN L250 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_e5fbc5a3-3b6b-4994-adf1-b31305f65762/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2024-11-09 04:30:05,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:30:05,730 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:30:05,744 WARN L250 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_e5fbc5a3-3b6b-4994-adf1-b31305f65762/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2024-11-09 04:30:05,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:30:05,824 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:30:05,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05 WrapperNode [2024-11-09 04:30:05,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:30:05,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:30:05,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:30:05,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:30:05,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,910 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 149 [2024-11-09 04:30:05,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:30:05,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:30:05,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:30:05,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:30:05,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:30:05,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:30:05,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:30:05,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:30:05,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (1/1) ... [2024-11-09 04:30:05,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:30:05,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:06,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:30:06,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:30:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:30:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:30:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-09 04:30:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-09 04:30:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:30:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:30:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 04:30:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 04:30:06,121 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:30:06,124 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:30:06,466 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-09 04:30:06,466 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:30:06,487 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:30:06,487 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 04:30:06,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:06 BoogieIcfgContainer [2024-11-09 04:30:06,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:30:06,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:30:06,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:30:06,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:30:06,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:30:05" (1/3) ... [2024-11-09 04:30:06,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2771dc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:30:06, skipping insertion in model container [2024-11-09 04:30:06,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:30:05" (2/3) ... [2024-11-09 04:30:06,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2771dc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:30:06, skipping insertion in model container [2024-11-09 04:30:06,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:06" (3/3) ... [2024-11-09 04:30:06,506 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2024-11-09 04:30:06,519 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:30:06,519 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:30:06,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:30:06,583 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4af763e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:30:06,583 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:30:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 04:30:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 04:30:06,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:06,598 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:06,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:06,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash -815335319, now seen corresponding path program 1 times [2024-11-09 04:30:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103552675] [2024-11-09 04:30:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:06,619 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 [2024-11-09 04:30:06,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:06,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:06,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:06,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:30:06,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:06,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:06,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:06,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103552675] [2024-11-09 04:30:06,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103552675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482406051] [2024-11-09 04:30:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:06,985 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:30:06,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:30:06,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-09 04:30:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:07,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:30:07,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:07,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482406051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:07,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812432336] [2024-11-09 04:30:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:07,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:07,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:07,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:07,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:30:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:07,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:30:07,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:07,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812432336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:07,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:30:07,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2024-11-09 04:30:07,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824604611] [2024-11-09 04:30:07,536 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:07,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:30:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:07,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:30:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:30:07,578 INFO L87 Difference]: Start difference. First operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:30:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:07,978 INFO L93 Difference]: Finished difference Result 191 states and 320 transitions. [2024-11-09 04:30:07,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:30:07,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2024-11-09 04:30:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:07,991 INFO L225 Difference]: With dead ends: 191 [2024-11-09 04:30:07,991 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 04:30:07,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:30:07,998 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 41 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:07,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 794 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 04:30:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-09 04:30:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 94 states have (on average 1.425531914893617) internal successors, (134), 95 states have internal predecessors, (134), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-09 04:30:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 168 transitions. [2024-11-09 04:30:08,049 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 168 transitions. Word has length 32 [2024-11-09 04:30:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:08,050 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 168 transitions. [2024-11-09 04:30:08,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:30:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 168 transitions. [2024-11-09 04:30:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 04:30:08,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:08,054 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:08,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:08,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:30:08,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-09 04:30:08,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:08,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:08,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash -458910183, now seen corresponding path program 1 times [2024-11-09 04:30:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038448454] [2024-11-09 04:30:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:08,657 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 [2024-11-09 04:30:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:08,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:08,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:08,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:30:08,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:08,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:08,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038448454] [2024-11-09 04:30:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038448454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:08,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:30:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99352844] [2024-11-09 04:30:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:08,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:30:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:30:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:30:08,787 INFO L87 Difference]: Start difference. First operand 112 states and 168 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:08,917 INFO L93 Difference]: Finished difference Result 246 states and 370 transitions. [2024-11-09 04:30:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:30:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-09 04:30:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:08,922 INFO L225 Difference]: With dead ends: 246 [2024-11-09 04:30:08,925 INFO L226 Difference]: Without dead ends: 185 [2024-11-09 04:30:08,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:30:08,927 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 46 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:08,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 435 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:30:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-09 04:30:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2024-11-09 04:30:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 159 states have (on average 1.4150943396226414) internal successors, (225), 158 states have internal predecessors, (225), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-09 04:30:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2024-11-09 04:30:08,967 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 40 [2024-11-09 04:30:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:08,968 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2024-11-09 04:30:08,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2024-11-09 04:30:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 04:30:08,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:08,973 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:08,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:09,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:09,174 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:09,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 221148187, now seen corresponding path program 1 times [2024-11-09 04:30:09,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:09,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338491918] [2024-11-09 04:30:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:09,176 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 [2024-11-09 04:30:09,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:09,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:09,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:09,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:30:09,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:30:09,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:09,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:09,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338491918] [2024-11-09 04:30:09,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338491918] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:09,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:30:09,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2024-11-09 04:30:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026311897] [2024-11-09 04:30:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:09,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:30:09,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:30:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:09,668 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:09,974 INFO L93 Difference]: Finished difference Result 238 states and 351 transitions. [2024-11-09 04:30:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:30:09,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-09 04:30:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:09,978 INFO L225 Difference]: With dead ends: 238 [2024-11-09 04:30:09,978 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 04:30:09,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:30:09,980 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 37 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:09,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 441 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 04:30:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-09 04:30:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 159 states have (on average 1.4025157232704402) internal successors, (223), 158 states have internal predecessors, (223), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-09 04:30:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 269 transitions. [2024-11-09 04:30:09,997 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 269 transitions. Word has length 40 [2024-11-09 04:30:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:09,997 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 269 transitions. [2024-11-09 04:30:09,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:09,998 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 269 transitions. [2024-11-09 04:30:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 04:30:10,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:10,000 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:10,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:30:10,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:10,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:10,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash 278406489, now seen corresponding path program 1 times [2024-11-09 04:30:10,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:10,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928376592] [2024-11-09 04:30:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:10,204 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 [2024-11-09 04:30:10,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:10,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:10,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:30:10,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:10,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:10,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928376592] [2024-11-09 04:30:10,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928376592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:10,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 04:30:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620878799] [2024-11-09 04:30:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:10,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:30:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:30:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:30:10,386 INFO L87 Difference]: Start difference. First operand 183 states and 269 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:10,518 INFO L93 Difference]: Finished difference Result 214 states and 313 transitions. [2024-11-09 04:30:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:30:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-09 04:30:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:10,526 INFO L225 Difference]: With dead ends: 214 [2024-11-09 04:30:10,526 INFO L226 Difference]: Without dead ends: 176 [2024-11-09 04:30:10,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:30:10,530 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 32 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:10,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 511 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:30:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-09 04:30:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2024-11-09 04:30:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 152 states have (on average 1.394736842105263) internal successors, (212), 151 states have internal predecessors, (212), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-09 04:30:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 254 transitions. [2024-11-09 04:30:10,563 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 254 transitions. Word has length 40 [2024-11-09 04:30:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:10,566 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 254 transitions. [2024-11-09 04:30:10,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 254 transitions. [2024-11-09 04:30:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 04:30:10,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:10,569 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:10,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:30:10,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:10,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:10,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1103669587, now seen corresponding path program 1 times [2024-11-09 04:30:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488978337] [2024-11-09 04:30:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:10,773 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 [2024-11-09 04:30:10,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:10,774 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:10,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:10,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:10,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:10,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488978337] [2024-11-09 04:30:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488978337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:10,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:10,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126787935] [2024-11-09 04:30:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:10,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:10,895 INFO L87 Difference]: Start difference. First operand 174 states and 254 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:10,926 INFO L93 Difference]: Finished difference Result 289 states and 425 transitions. [2024-11-09 04:30:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-11-09 04:30:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:10,928 INFO L225 Difference]: With dead ends: 289 [2024-11-09 04:30:10,929 INFO L226 Difference]: Without dead ends: 223 [2024-11-09 04:30:10,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:10,930 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 15 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:10,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 345 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-09 04:30:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2024-11-09 04:30:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 199 states have (on average 1.3517587939698492) internal successors, (269), 198 states have internal predecessors, (269), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-09 04:30:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 315 transitions. [2024-11-09 04:30:10,962 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 315 transitions. Word has length 43 [2024-11-09 04:30:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:10,962 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 315 transitions. [2024-11-09 04:30:10,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 315 transitions. [2024-11-09 04:30:10,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 04:30:10,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:10,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:10,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:30:11,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:11,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:11,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash 508624669, now seen corresponding path program 1 times [2024-11-09 04:30:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:11,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850655223] [2024-11-09 04:30:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:11,168 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 [2024-11-09 04:30:11,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:11,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:11,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:11,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:11,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 04:30:11,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:11,261 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850655223] [2024-11-09 04:30:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850655223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545081624] [2024-11-09 04:30:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:11,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:11,264 INFO L87 Difference]: Start difference. First operand 223 states and 315 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:30:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:11,337 INFO L93 Difference]: Finished difference Result 367 states and 518 transitions. [2024-11-09 04:30:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:30:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-09 04:30:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:11,340 INFO L225 Difference]: With dead ends: 367 [2024-11-09 04:30:11,340 INFO L226 Difference]: Without dead ends: 147 [2024-11-09 04:30:11,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:30:11,341 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 26 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:11,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 258 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-09 04:30:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2024-11-09 04:30:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 121 states have internal predecessors, (158), 11 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-09 04:30:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 185 transitions. [2024-11-09 04:30:11,363 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 185 transitions. Word has length 43 [2024-11-09 04:30:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:11,364 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 185 transitions. [2024-11-09 04:30:11,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:30:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 185 transitions. [2024-11-09 04:30:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 04:30:11,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:11,367 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:11,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:30:11,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:11,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:11,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1829172874, now seen corresponding path program 1 times [2024-11-09 04:30:11,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:11,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728470430] [2024-11-09 04:30:11,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:11,568 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 [2024-11-09 04:30:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:11,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:11,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (10)] Waiting until timeout for monitored process [2024-11-09 04:30:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:11,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:30:11,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:11,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:11,901 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728470430] [2024-11-09 04:30:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728470430] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:11,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:30:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-09 04:30:11,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982252849] [2024-11-09 04:30:11,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:11,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:30:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:30:11,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:11,904 INFO L87 Difference]: Start difference. First operand 135 states and 185 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:12,127 INFO L93 Difference]: Finished difference Result 205 states and 289 transitions. [2024-11-09 04:30:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:30:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-09 04:30:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:12,129 INFO L225 Difference]: With dead ends: 205 [2024-11-09 04:30:12,129 INFO L226 Difference]: Without dead ends: 169 [2024-11-09 04:30:12,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:12,130 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 25 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:12,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 372 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:30:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-09 04:30:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2024-11-09 04:30:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.3194444444444444) internal successors, (190), 147 states have internal predecessors, (190), 14 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-09 04:30:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 223 transitions. [2024-11-09 04:30:12,141 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 223 transitions. Word has length 44 [2024-11-09 04:30:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:12,142 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 223 transitions. [2024-11-09 04:30:12,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 223 transitions. [2024-11-09 04:30:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 04:30:12,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:12,144 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:12,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (10)] Ended with exit code 0 [2024-11-09 04:30:12,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:12,344 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:12,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash -690787060, now seen corresponding path program 1 times [2024-11-09 04:30:12,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:12,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125324876] [2024-11-09 04:30:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:12,345 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 [2024-11-09 04:30:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:12,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:12,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (11)] Waiting until timeout for monitored process [2024-11-09 04:30:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:12,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:30:12,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:12,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:12,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125324876] [2024-11-09 04:30:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125324876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:12,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:12,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:30:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416049230] [2024-11-09 04:30:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:12,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:30:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:30:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:30:12,430 INFO L87 Difference]: Start difference. First operand 163 states and 223 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:12,464 INFO L93 Difference]: Finished difference Result 170 states and 229 transitions. [2024-11-09 04:30:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:30:12,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-09 04:30:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:12,466 INFO L225 Difference]: With dead ends: 170 [2024-11-09 04:30:12,466 INFO L226 Difference]: Without dead ends: 163 [2024-11-09 04:30:12,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:30:12,467 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 3 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:12,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 379 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-09 04:30:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-09 04:30:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.2986111111111112) internal successors, (187), 147 states have internal predecessors, (187), 14 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-09 04:30:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2024-11-09 04:30:12,477 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 44 [2024-11-09 04:30:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:12,477 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2024-11-09 04:30:12,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2024-11-09 04:30:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 04:30:12,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:12,479 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:12,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (11)] Ended with exit code 0 [2024-11-09 04:30:12,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:12,682 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:12,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1875958711, now seen corresponding path program 2 times [2024-11-09 04:30:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417905276] [2024-11-09 04:30:12,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:30:12,683 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 [2024-11-09 04:30:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:12,686 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:12,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (12)] Waiting until timeout for monitored process [2024-11-09 04:30:12,756 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 04:30:12,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:30:12,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:30:12,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:12,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:12,964 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417905276] [2024-11-09 04:30:12,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417905276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:12,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:12,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 04:30:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122051802] [2024-11-09 04:30:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:12,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:30:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:30:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:30:12,967 INFO L87 Difference]: Start difference. First operand 163 states and 220 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:13,354 INFO L93 Difference]: Finished difference Result 289 states and 398 transitions. [2024-11-09 04:30:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:30:13,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-09 04:30:13,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:13,356 INFO L225 Difference]: With dead ends: 289 [2024-11-09 04:30:13,356 INFO L226 Difference]: Without dead ends: 248 [2024-11-09 04:30:13,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:30:13,358 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 57 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:13,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1165 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-09 04:30:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2024-11-09 04:30:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 218 states have (on average 1.3073394495412844) internal successors, (285), 222 states have internal predecessors, (285), 21 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (29), 25 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-09 04:30:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-11-09 04:30:13,372 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 44 [2024-11-09 04:30:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:13,373 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-11-09 04:30:13,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-11-09 04:30:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 04:30:13,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:13,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:13,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (12)] Ended with exit code 0 [2024-11-09 04:30:13,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:13,577 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:13,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -957401979, now seen corresponding path program 1 times [2024-11-09 04:30:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:13,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597005366] [2024-11-09 04:30:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:13,578 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 [2024-11-09 04:30:13,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:13,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:13,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (13)] Waiting until timeout for monitored process [2024-11-09 04:30:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:13,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:30:13,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:13,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:30:13,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:13,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597005366] [2024-11-09 04:30:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597005366] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:13,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:30:13,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 04:30:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987657443] [2024-11-09 04:30:13,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:13,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:30:13,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:13,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:30:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:30:13,845 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:13,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:13,936 INFO L93 Difference]: Finished difference Result 252 states and 340 transitions. [2024-11-09 04:30:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:30:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-09 04:30:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:13,938 INFO L225 Difference]: With dead ends: 252 [2024-11-09 04:30:13,938 INFO L226 Difference]: Without dead ends: 250 [2024-11-09 04:30:13,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:30:13,940 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:13,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 450 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:30:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-09 04:30:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2024-11-09 04:30:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 221 states have (on average 1.3031674208144797) internal successors, (288), 225 states have internal predecessors, (288), 21 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (29), 25 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-09 04:30:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 338 transitions. [2024-11-09 04:30:13,959 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 338 transitions. Word has length 44 [2024-11-09 04:30:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:13,960 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 338 transitions. [2024-11-09 04:30:13,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 338 transitions. [2024-11-09 04:30:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 04:30:13,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:13,962 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:13,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (13)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:14,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:14,164 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:14,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1800320811, now seen corresponding path program 1 times [2024-11-09 04:30:14,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:14,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893967988] [2024-11-09 04:30:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:14,165 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 [2024-11-09 04:30:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:14,166 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:14,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (14)] Waiting until timeout for monitored process [2024-11-09 04:30:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:14,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:14,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:14,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:14,248 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893967988] [2024-11-09 04:30:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893967988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:14,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:14,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033563842] [2024-11-09 04:30:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:14,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:14,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:14,251 INFO L87 Difference]: Start difference. First operand 250 states and 338 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:14,283 INFO L93 Difference]: Finished difference Result 432 states and 596 transitions. [2024-11-09 04:30:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-11-09 04:30:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:14,287 INFO L225 Difference]: With dead ends: 432 [2024-11-09 04:30:14,290 INFO L226 Difference]: Without dead ends: 352 [2024-11-09 04:30:14,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:14,292 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 28 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:14,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 292 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-09 04:30:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 296. [2024-11-09 04:30:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 263 states have (on average 1.3079847908745248) internal successors, (344), 266 states have internal predecessors, (344), 25 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (33), 29 states have call predecessors, (33), 24 states have call successors, (33) [2024-11-09 04:30:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 402 transitions. [2024-11-09 04:30:14,315 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 402 transitions. Word has length 45 [2024-11-09 04:30:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:14,316 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 402 transitions. [2024-11-09 04:30:14,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 402 transitions. [2024-11-09 04:30:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 04:30:14,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:14,317 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:14,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (14)] Ended with exit code 0 [2024-11-09 04:30:14,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:14,518 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:14,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1584712265, now seen corresponding path program 1 times [2024-11-09 04:30:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:14,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819457556] [2024-11-09 04:30:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:14,519 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 [2024-11-09 04:30:14,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:14,520 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:14,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (15)] Waiting until timeout for monitored process [2024-11-09 04:30:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:14,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:14,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:14,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:14,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819457556] [2024-11-09 04:30:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819457556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:14,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:14,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725058555] [2024-11-09 04:30:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:14,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:14,595 INFO L87 Difference]: Start difference. First operand 296 states and 402 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:14,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:14,624 INFO L93 Difference]: Finished difference Result 315 states and 423 transitions. [2024-11-09 04:30:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:14,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2024-11-09 04:30:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:14,626 INFO L225 Difference]: With dead ends: 315 [2024-11-09 04:30:14,626 INFO L226 Difference]: Without dead ends: 271 [2024-11-09 04:30:14,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:14,628 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:14,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-09 04:30:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-09 04:30:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.3109243697478992) internal successors, (312), 242 states have internal predecessors, (312), 25 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (31), 28 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-09 04:30:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 368 transitions. [2024-11-09 04:30:14,643 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 368 transitions. Word has length 48 [2024-11-09 04:30:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:14,643 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 368 transitions. [2024-11-09 04:30:14,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:14,644 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 368 transitions. [2024-11-09 04:30:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:30:14,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:14,645 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:14,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (15)] Ended with exit code 0 [2024-11-09 04:30:14,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:14,846 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:14,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1800675301, now seen corresponding path program 1 times [2024-11-09 04:30:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196819769] [2024-11-09 04:30:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:14,848 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 [2024-11-09 04:30:14,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:14,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:14,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (16)] Waiting until timeout for monitored process [2024-11-09 04:30:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:14,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:30:14,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:15,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:15,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196819769] [2024-11-09 04:30:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196819769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:15,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 04:30:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202976740] [2024-11-09 04:30:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:15,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:30:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:30:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:30:15,063 INFO L87 Difference]: Start difference. First operand 271 states and 368 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:30:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:15,373 INFO L93 Difference]: Finished difference Result 536 states and 741 transitions. [2024-11-09 04:30:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:30:15,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-11-09 04:30:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:15,377 INFO L225 Difference]: With dead ends: 536 [2024-11-09 04:30:15,377 INFO L226 Difference]: Without dead ends: 430 [2024-11-09 04:30:15,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:30:15,379 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 95 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:15,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 912 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-09 04:30:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2024-11-09 04:30:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 295 states have (on average 1.311864406779661) internal successors, (387), 297 states have internal predecessors, (387), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (43), 39 states have call predecessors, (43), 33 states have call successors, (43) [2024-11-09 04:30:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 464 transitions. [2024-11-09 04:30:15,413 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 464 transitions. Word has length 49 [2024-11-09 04:30:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:15,415 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 464 transitions. [2024-11-09 04:30:15,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:30:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 464 transitions. [2024-11-09 04:30:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:30:15,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:15,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:15,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (16)] Ended with exit code 0 [2024-11-09 04:30:15,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:15,619 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:15,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash 545314089, now seen corresponding path program 1 times [2024-11-09 04:30:15,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:15,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164194188] [2024-11-09 04:30:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:15,621 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 [2024-11-09 04:30:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:15,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:15,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (17)] Waiting until timeout for monitored process [2024-11-09 04:30:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:15,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:30:15,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:15,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:15,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:15,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164194188] [2024-11-09 04:30:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164194188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023561309] [2024-11-09 04:30:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:15,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:30:15,903 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:30:15,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-09 04:30:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:15,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:30:16,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:16,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:16,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023561309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:16,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079320456] [2024-11-09 04:30:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:16,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:16,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:16,108 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:16,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 04:30:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:16,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:30:16,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:16,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079320456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:16,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:30:16,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2024-11-09 04:30:16,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697706686] [2024-11-09 04:30:16,300 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:16,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:30:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:16,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:30:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:16,301 INFO L87 Difference]: Start difference. First operand 337 states and 464 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:30:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:16,664 INFO L93 Difference]: Finished difference Result 519 states and 712 transitions. [2024-11-09 04:30:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:30:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2024-11-09 04:30:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:16,667 INFO L225 Difference]: With dead ends: 519 [2024-11-09 04:30:16,668 INFO L226 Difference]: Without dead ends: 410 [2024-11-09 04:30:16,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:30:16,669 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 98 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:16,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1289 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-09 04:30:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 337. [2024-11-09 04:30:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 295 states have (on average 1.2915254237288136) internal successors, (381), 297 states have internal predecessors, (381), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (43), 39 states have call predecessors, (43), 33 states have call successors, (43) [2024-11-09 04:30:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 458 transitions. [2024-11-09 04:30:16,694 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 458 transitions. Word has length 49 [2024-11-09 04:30:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:16,695 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 458 transitions. [2024-11-09 04:30:16,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:30:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 458 transitions. [2024-11-09 04:30:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:30:16,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:16,697 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:16,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 04:30:16,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-09 04:30:17,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (17)] Ended with exit code 0 [2024-11-09 04:30:17,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:17,298 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:17,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1246378667, now seen corresponding path program 1 times [2024-11-09 04:30:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685681412] [2024-11-09 04:30:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:17,299 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 [2024-11-09 04:30:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:17,302 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:17,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (20)] Waiting until timeout for monitored process [2024-11-09 04:30:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:17,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:30:17,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:30:17,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:17,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:17,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685681412] [2024-11-09 04:30:17,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685681412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:17,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:17,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:17,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399539266] [2024-11-09 04:30:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:17,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:17,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:17,399 INFO L87 Difference]: Start difference. First operand 337 states and 458 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:17,468 INFO L93 Difference]: Finished difference Result 404 states and 543 transitions. [2024-11-09 04:30:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:17,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-11-09 04:30:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:17,471 INFO L225 Difference]: With dead ends: 404 [2024-11-09 04:30:17,471 INFO L226 Difference]: Without dead ends: 377 [2024-11-09 04:30:17,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:30:17,474 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 41 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:17,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 277 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-09 04:30:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 337. [2024-11-09 04:30:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 295 states have (on average 1.2847457627118644) internal successors, (379), 297 states have internal predecessors, (379), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (43), 39 states have call predecessors, (43), 33 states have call successors, (43) [2024-11-09 04:30:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2024-11-09 04:30:17,497 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 49 [2024-11-09 04:30:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:17,497 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2024-11-09 04:30:17,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2024-11-09 04:30:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 04:30:17,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:17,499 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:17,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (20)] Ended with exit code 0 [2024-11-09 04:30:17,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:17,702 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:17,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1760051637, now seen corresponding path program 1 times [2024-11-09 04:30:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133768603] [2024-11-09 04:30:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:17,703 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 [2024-11-09 04:30:17,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:17,706 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:17,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (21)] Waiting until timeout for monitored process [2024-11-09 04:30:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:17,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 04:30:17,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:17,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:17,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:17,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133768603] [2024-11-09 04:30:17,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133768603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:17,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:17,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 04:30:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938723143] [2024-11-09 04:30:17,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:17,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:30:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:30:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:30:17,974 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:18,355 INFO L93 Difference]: Finished difference Result 409 states and 554 transitions. [2024-11-09 04:30:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:30:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-11-09 04:30:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:18,357 INFO L225 Difference]: With dead ends: 409 [2024-11-09 04:30:18,357 INFO L226 Difference]: Without dead ends: 374 [2024-11-09 04:30:18,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:18,359 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 48 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:18,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 757 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-09 04:30:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 367. [2024-11-09 04:30:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 321 states have (on average 1.2679127725856698) internal successors, (407), 325 states have internal predecessors, (407), 38 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (46), 42 states have call predecessors, (46), 36 states have call successors, (46) [2024-11-09 04:30:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 491 transitions. [2024-11-09 04:30:18,383 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 491 transitions. Word has length 50 [2024-11-09 04:30:18,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:18,384 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 491 transitions. [2024-11-09 04:30:18,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 491 transitions. [2024-11-09 04:30:18,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 04:30:18,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:18,388 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:18,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (21)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:18,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:18,589 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:18,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1902267513, now seen corresponding path program 1 times [2024-11-09 04:30:18,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:18,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954064911] [2024-11-09 04:30:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:18,590 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 [2024-11-09 04:30:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:18,591 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:18,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (22)] Waiting until timeout for monitored process [2024-11-09 04:30:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:18,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:30:18,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:18,729 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:18,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954064911] [2024-11-09 04:30:18,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954064911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:18,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 04:30:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693243017] [2024-11-09 04:30:18,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:18,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:30:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:30:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:30:18,732 INFO L87 Difference]: Start difference. First operand 367 states and 491 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:18,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:18,988 INFO L93 Difference]: Finished difference Result 482 states and 650 transitions. [2024-11-09 04:30:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:30:18,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-11-09 04:30:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:18,991 INFO L225 Difference]: With dead ends: 482 [2024-11-09 04:30:18,991 INFO L226 Difference]: Without dead ends: 458 [2024-11-09 04:30:18,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:30:18,993 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 27 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:18,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 535 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:30:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-09 04:30:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 380. [2024-11-09 04:30:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 330 states have (on average 1.2818181818181817) internal successors, (423), 336 states have internal predecessors, (423), 42 states have call successors, (42), 4 states have call predecessors, (42), 7 states have return successors, (50), 45 states have call predecessors, (50), 40 states have call successors, (50) [2024-11-09 04:30:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 515 transitions. [2024-11-09 04:30:19,017 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 515 transitions. Word has length 50 [2024-11-09 04:30:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:19,018 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 515 transitions. [2024-11-09 04:30:19,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 515 transitions. [2024-11-09 04:30:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 04:30:19,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:19,020 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:19,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (22)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:19,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:19,220 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:19,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash 244905453, now seen corresponding path program 1 times [2024-11-09 04:30:19,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:19,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778564891] [2024-11-09 04:30:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:19,221 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 [2024-11-09 04:30:19,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:19,224 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:19,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (23)] Waiting until timeout for monitored process [2024-11-09 04:30:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:19,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:19,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:19,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:19,309 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778564891] [2024-11-09 04:30:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778564891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:19,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:19,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732167520] [2024-11-09 04:30:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:19,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:19,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:19,311 INFO L87 Difference]: Start difference. First operand 380 states and 515 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:19,342 INFO L93 Difference]: Finished difference Result 427 states and 574 transitions. [2024-11-09 04:30:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:19,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-11-09 04:30:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:19,344 INFO L225 Difference]: With dead ends: 427 [2024-11-09 04:30:19,344 INFO L226 Difference]: Without dead ends: 380 [2024-11-09 04:30:19,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:19,345 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 26 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:19,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 264 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-09 04:30:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-09 04:30:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 330 states have (on average 1.2181818181818183) internal successors, (402), 336 states have internal predecessors, (402), 42 states have call successors, (42), 4 states have call predecessors, (42), 7 states have return successors, (50), 45 states have call predecessors, (50), 40 states have call successors, (50) [2024-11-09 04:30:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 494 transitions. [2024-11-09 04:30:19,372 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 494 transitions. Word has length 50 [2024-11-09 04:30:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:19,372 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 494 transitions. [2024-11-09 04:30:19,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 494 transitions. [2024-11-09 04:30:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 04:30:19,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:19,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:19,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (23)] Ended with exit code 0 [2024-11-09 04:30:19,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:19,575 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:19,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 305677735, now seen corresponding path program 1 times [2024-11-09 04:30:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384855780] [2024-11-09 04:30:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:19,576 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 [2024-11-09 04:30:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:19,577 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:19,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (24)] Waiting until timeout for monitored process [2024-11-09 04:30:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:19,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:19,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:19,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:19,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:19,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384855780] [2024-11-09 04:30:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384855780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:19,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:19,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:30:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079515492] [2024-11-09 04:30:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:19,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:19,659 INFO L87 Difference]: Start difference. First operand 380 states and 494 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:19,686 INFO L93 Difference]: Finished difference Result 389 states and 502 transitions. [2024-11-09 04:30:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-09 04:30:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:19,688 INFO L225 Difference]: With dead ends: 389 [2024-11-09 04:30:19,689 INFO L226 Difference]: Without dead ends: 342 [2024-11-09 04:30:19,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:19,690 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:19,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-09 04:30:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 317. [2024-11-09 04:30:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 275 states have (on average 1.2181818181818183) internal successors, (335), 280 states have internal predecessors, (335), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (39), 36 states have call predecessors, (39), 32 states have call successors, (39) [2024-11-09 04:30:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 408 transitions. [2024-11-09 04:30:19,710 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 408 transitions. Word has length 52 [2024-11-09 04:30:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:19,711 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 408 transitions. [2024-11-09 04:30:19,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 408 transitions. [2024-11-09 04:30:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 04:30:19,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:19,712 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:19,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (24)] Ended with exit code 0 [2024-11-09 04:30:19,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:19,915 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:19,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1511551533, now seen corresponding path program 1 times [2024-11-09 04:30:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:19,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196143514] [2024-11-09 04:30:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:19,915 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 [2024-11-09 04:30:19,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:19,916 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:19,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (25)] Waiting until timeout for monitored process [2024-11-09 04:30:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:19,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:30:19,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:30:20,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:30:20,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:20,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196143514] [2024-11-09 04:30:20,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196143514] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:20,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:30:20,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-09 04:30:20,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831098771] [2024-11-09 04:30:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:20,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:30:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:30:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:20,242 INFO L87 Difference]: Start difference. First operand 317 states and 408 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:20,490 INFO L93 Difference]: Finished difference Result 393 states and 502 transitions. [2024-11-09 04:30:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:30:20,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-09 04:30:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:20,493 INFO L225 Difference]: With dead ends: 393 [2024-11-09 04:30:20,494 INFO L226 Difference]: Without dead ends: 332 [2024-11-09 04:30:20,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:30:20,495 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 22 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:20,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 349 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:30:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-09 04:30:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 309. [2024-11-09 04:30:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 267 states have (on average 1.2134831460674158) internal successors, (324), 271 states have internal predecessors, (324), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-09 04:30:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 395 transitions. [2024-11-09 04:30:20,516 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 395 transitions. Word has length 52 [2024-11-09 04:30:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:20,516 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 395 transitions. [2024-11-09 04:30:20,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:30:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 395 transitions. [2024-11-09 04:30:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 04:30:20,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:20,518 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:20,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (25)] Ended with exit code 0 [2024-11-09 04:30:20,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:20,718 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:20,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2017389868, now seen corresponding path program 1 times [2024-11-09 04:30:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861687400] [2024-11-09 04:30:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:20,719 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 [2024-11-09 04:30:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:20,723 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:20,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (26)] Waiting until timeout for monitored process [2024-11-09 04:30:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:20,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 04:30:20,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:21,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:21,058 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:21,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861687400] [2024-11-09 04:30:21,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861687400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:21,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:30:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615346476] [2024-11-09 04:30:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:21,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:30:21,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:30:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:30:21,060 INFO L87 Difference]: Start difference. First operand 309 states and 395 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 04:30:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:21,548 INFO L93 Difference]: Finished difference Result 395 states and 503 transitions. [2024-11-09 04:30:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:30:21,549 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2024-11-09 04:30:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:21,550 INFO L225 Difference]: With dead ends: 395 [2024-11-09 04:30:21,550 INFO L226 Difference]: Without dead ends: 350 [2024-11-09 04:30:21,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:30:21,552 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 69 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:21,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 913 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-09 04:30:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 309. [2024-11-09 04:30:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 267 states have (on average 1.202247191011236) internal successors, (321), 271 states have internal predecessors, (321), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-09 04:30:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 392 transitions. [2024-11-09 04:30:21,574 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 392 transitions. Word has length 54 [2024-11-09 04:30:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:21,575 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 392 transitions. [2024-11-09 04:30:21,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 04:30:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 392 transitions. [2024-11-09 04:30:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 04:30:21,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:21,576 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:21,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (26)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:21,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:21,777 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:21,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2135361552, now seen corresponding path program 1 times [2024-11-09 04:30:21,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058572325] [2024-11-09 04:30:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:30:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:21,780 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:21,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (27)] Waiting until timeout for monitored process [2024-11-09 04:30:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:21,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:30:21,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:22,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:22,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058572325] [2024-11-09 04:30:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058572325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [236241127] [2024-11-09 04:30:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:22,244 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:30:22,247 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:30:22,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-09 04:30:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:22,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:30:22,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:22,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [236241127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031654423] [2024-11-09 04:30:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:22,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:22,589 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:22,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 04:30:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:22,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:30:22,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:22,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031654423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:22,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:22,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-09 04:30:22,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376657706] [2024-11-09 04:30:22,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:22,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:30:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:30:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:30:22,895 INFO L87 Difference]: Start difference. First operand 309 states and 392 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 04:30:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:23,305 INFO L93 Difference]: Finished difference Result 390 states and 497 transitions. [2024-11-09 04:30:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:30:23,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2024-11-09 04:30:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:23,309 INFO L225 Difference]: With dead ends: 390 [2024-11-09 04:30:23,309 INFO L226 Difference]: Without dead ends: 350 [2024-11-09 04:30:23,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:30:23,312 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 47 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:23,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 921 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:30:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-09 04:30:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 309. [2024-11-09 04:30:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 267 states have (on average 1.1947565543071161) internal successors, (319), 271 states have internal predecessors, (319), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-09 04:30:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 390 transitions. [2024-11-09 04:30:23,332 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 390 transitions. Word has length 54 [2024-11-09 04:30:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:23,333 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 390 transitions. [2024-11-09 04:30:23,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 04:30:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 390 transitions. [2024-11-09 04:30:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 04:30:23,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:23,334 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:23,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:23,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (27)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:23,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:23,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:23,936 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:23,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash 685704282, now seen corresponding path program 1 times [2024-11-09 04:30:23,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732608404] [2024-11-09 04:30:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:23,937 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 [2024-11-09 04:30:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:23,940 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:23,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (30)] Waiting until timeout for monitored process [2024-11-09 04:30:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:24,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:30:24,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:24,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:24,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732608404] [2024-11-09 04:30:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732608404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:24,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 04:30:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445557311] [2024-11-09 04:30:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:24,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:30:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:30:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:30:24,186 INFO L87 Difference]: Start difference. First operand 309 states and 390 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:24,583 INFO L93 Difference]: Finished difference Result 374 states and 470 transitions. [2024-11-09 04:30:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:30:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-09 04:30:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:24,585 INFO L225 Difference]: With dead ends: 374 [2024-11-09 04:30:24,585 INFO L226 Difference]: Without dead ends: 326 [2024-11-09 04:30:24,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:30:24,586 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 52 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:24,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 740 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:30:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-09 04:30:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 309. [2024-11-09 04:30:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 267 states have (on average 1.1872659176029963) internal successors, (317), 271 states have internal predecessors, (317), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-09 04:30:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 388 transitions. [2024-11-09 04:30:24,607 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 388 transitions. Word has length 54 [2024-11-09 04:30:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:24,607 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 388 transitions. [2024-11-09 04:30:24,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 388 transitions. [2024-11-09 04:30:24,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 04:30:24,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:24,609 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:24,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (30)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:24,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:24,811 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:24,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 543488406, now seen corresponding path program 1 times [2024-11-09 04:30:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633074247] [2024-11-09 04:30:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:24,813 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 [2024-11-09 04:30:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:24,816 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:24,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (31)] Waiting until timeout for monitored process [2024-11-09 04:30:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:24,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:24,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 04:30:28,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:28,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633074247] [2024-11-09 04:30:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633074247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:28,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:28,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:30:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301964730] [2024-11-09 04:30:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:28,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:30:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:30:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2024-11-09 04:30:28,870 INFO L87 Difference]: Start difference. First operand 309 states and 388 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:31,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:33,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:33,165 INFO L93 Difference]: Finished difference Result 325 states and 405 transitions. [2024-11-09 04:30:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:30:33,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-09 04:30:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:33,168 INFO L225 Difference]: With dead ends: 325 [2024-11-09 04:30:33,168 INFO L226 Difference]: Without dead ends: 323 [2024-11-09 04:30:33,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2024-11-09 04:30:33,169 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 10 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:33,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 484 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 04:30:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-09 04:30:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 315. [2024-11-09 04:30:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 270 states have (on average 1.1851851851851851) internal successors, (320), 276 states have internal predecessors, (320), 37 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (38), 36 states have call predecessors, (38), 35 states have call successors, (38) [2024-11-09 04:30:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 395 transitions. [2024-11-09 04:30:33,195 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 395 transitions. Word has length 54 [2024-11-09 04:30:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:33,195 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 395 transitions. [2024-11-09 04:30:33,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 395 transitions. [2024-11-09 04:30:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 04:30:33,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:33,197 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:33,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (31)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:33,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:33,398 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:33,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1571989714, now seen corresponding path program 1 times [2024-11-09 04:30:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174296793] [2024-11-09 04:30:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:33,399 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 [2024-11-09 04:30:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:33,402 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (32)] Waiting until timeout for monitored process [2024-11-09 04:30:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:33,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:33,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:33,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:33,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:33,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174296793] [2024-11-09 04:30:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174296793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:33,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1762114847] [2024-11-09 04:30:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:33,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:30:33,804 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:30:33,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 04:30:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:33,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:33,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:33,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:34,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1762114847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:34,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441963919] [2024-11-09 04:30:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:34,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:34,064 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 04:30:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:34,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 04:30:34,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:30:34,357 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441963919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 04:30:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 8, 8, 8] total 19 [2024-11-09 04:30:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381477716] [2024-11-09 04:30:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:34,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:30:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:30:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:30:34,358 INFO L87 Difference]: Start difference. First operand 315 states and 395 transitions. Second operand has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 04:30:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:34,939 INFO L93 Difference]: Finished difference Result 371 states and 463 transitions. [2024-11-09 04:30:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:30:34,940 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2024-11-09 04:30:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:34,942 INFO L225 Difference]: With dead ends: 371 [2024-11-09 04:30:34,942 INFO L226 Difference]: Without dead ends: 324 [2024-11-09 04:30:34,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-09 04:30:34,943 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 57 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:34,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 980 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:30:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-09 04:30:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 290. [2024-11-09 04:30:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 248 states have (on average 1.185483870967742) internal successors, (294), 253 states have internal predecessors, (294), 34 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2024-11-09 04:30:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2024-11-09 04:30:34,965 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 55 [2024-11-09 04:30:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:34,965 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2024-11-09 04:30:34,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 04:30:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2024-11-09 04:30:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 04:30:34,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:34,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:34,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:35,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (32)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:35,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 04:30:35,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:35,567 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:35,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1458264854, now seen corresponding path program 1 times [2024-11-09 04:30:35,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:35,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097821834] [2024-11-09 04:30:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:35,568 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 [2024-11-09 04:30:35,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:35,572 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:35,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (35)] Waiting until timeout for monitored process [2024-11-09 04:30:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:35,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:35,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:35,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:35,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097821834] [2024-11-09 04:30:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097821834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [721435118] [2024-11-09 04:30:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:35,898 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:30:35,899 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:30:35,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-09 04:30:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:36,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:36,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:36,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:36,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [721435118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:36,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635989760] [2024-11-09 04:30:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:36,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:36,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:36,177 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:36,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 04:30:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:36,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:36,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:36,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635989760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:36,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:30:36,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2024-11-09 04:30:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887585454] [2024-11-09 04:30:36,363 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:36,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:30:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:30:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:30:36,365 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:30:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:36,637 INFO L93 Difference]: Finished difference Result 341 states and 425 transitions. [2024-11-09 04:30:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:30:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 55 [2024-11-09 04:30:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:36,640 INFO L225 Difference]: With dead ends: 341 [2024-11-09 04:30:36,640 INFO L226 Difference]: Without dead ends: 290 [2024-11-09 04:30:36,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:30:36,641 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 60 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:36,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 989 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:30:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-09 04:30:36,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 266. [2024-11-09 04:30:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 227 states have (on average 1.1850220264317182) internal successors, (269), 231 states have internal predecessors, (269), 31 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (32), 30 states have call predecessors, (32), 29 states have call successors, (32) [2024-11-09 04:30:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 332 transitions. [2024-11-09 04:30:36,667 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 332 transitions. Word has length 55 [2024-11-09 04:30:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:36,667 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 332 transitions. [2024-11-09 04:30:36,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:30:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 332 transitions. [2024-11-09 04:30:36,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 04:30:36,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:36,669 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:36,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (35)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:36,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-09 04:30:37,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-09 04:30:37,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:30:37,272 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:37,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash -531437556, now seen corresponding path program 1 times [2024-11-09 04:30:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861461583] [2024-11-09 04:30:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:37,273 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 [2024-11-09 04:30:37,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:37,276 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:37,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (38)] Waiting until timeout for monitored process [2024-11-09 04:30:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:37,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:30:37,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:30:37,488 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:37,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:37,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861461583] [2024-11-09 04:30:37,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861461583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:37,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:37,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 04:30:37,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492879392] [2024-11-09 04:30:37,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:37,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:30:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:30:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:30:37,490 INFO L87 Difference]: Start difference. First operand 266 states and 332 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:37,740 INFO L93 Difference]: Finished difference Result 294 states and 361 transitions. [2024-11-09 04:30:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:30:37,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-09 04:30:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:37,741 INFO L225 Difference]: With dead ends: 294 [2024-11-09 04:30:37,741 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 04:30:37,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:30:37,742 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:37,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 623 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:30:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 04:30:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 218. [2024-11-09 04:30:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 187 states have (on average 1.1711229946524064) internal successors, (219), 191 states have internal predecessors, (219), 23 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2024-11-09 04:30:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 266 transitions. [2024-11-09 04:30:37,757 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 266 transitions. Word has length 55 [2024-11-09 04:30:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:37,758 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 266 transitions. [2024-11-09 04:30:37,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 266 transitions. [2024-11-09 04:30:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 04:30:37,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:37,759 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:37,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (38)] Ended with exit code 0 [2024-11-09 04:30:37,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:30:37,962 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:37,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash -645162416, now seen corresponding path program 1 times [2024-11-09 04:30:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:30:37,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726703995] [2024-11-09 04:30:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:37,963 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 [2024-11-09 04:30:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:30:37,965 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:30:37,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (39)] Waiting until timeout for monitored process [2024-11-09 04:30:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:38,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:30:38,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 04:30:46,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:30:46,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:30:46,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726703995] [2024-11-09 04:30:46,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726703995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:46,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:30:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118255086] [2024-11-09 04:30:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:46,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:30:46,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:30:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:30:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=36, Unknown=4, NotChecked=0, Total=56 [2024-11-09 04:30:46,280 INFO L87 Difference]: Start difference. First operand 218 states and 266 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:30:48,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:50,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:52,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:54,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:56,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:30:58,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:31:01,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:31:03,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:31:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:04,097 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2024-11-09 04:31:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:31:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-09 04:31:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:04,099 INFO L225 Difference]: With dead ends: 226 [2024-11-09 04:31:04,099 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 04:31:04,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=20, Invalid=48, Unknown=4, NotChecked=0, Total=72 [2024-11-09 04:31:04,101 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:04,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 399 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 8 Unknown, 0 Unchecked, 17.8s Time] [2024-11-09 04:31:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 04:31:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2024-11-09 04:31:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 187 states have (on average 1.1711229946524064) internal successors, (219), 189 states have internal predecessors, (219), 21 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (22), 22 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-09 04:31:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 262 transitions. [2024-11-09 04:31:04,121 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 262 transitions. Word has length 55 [2024-11-09 04:31:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:04,121 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 262 transitions. [2024-11-09 04:31:04,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:31:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 262 transitions. [2024-11-09 04:31:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 04:31:04,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:04,123 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:04,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (39)] Ended with exit code 0 [2024-11-09 04:31:04,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:04,324 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:04,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1290637791, now seen corresponding path program 1 times [2024-11-09 04:31:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452941968] [2024-11-09 04:31:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:04,325 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 [2024-11-09 04:31:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:04,326 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:04,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (40)] Waiting until timeout for monitored process [2024-11-09 04:31:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:04,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:31:04,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:31:04,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:04,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:04,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452941968] [2024-11-09 04:31:04,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452941968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:04,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:04,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:31:04,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564831473] [2024-11-09 04:31:04,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:04,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:31:04,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:31:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:04,470 INFO L87 Difference]: Start difference. First operand 216 states and 262 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 04:31:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:04,585 INFO L93 Difference]: Finished difference Result 228 states and 274 transitions. [2024-11-09 04:31:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:31:04,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-11-09 04:31:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:04,588 INFO L225 Difference]: With dead ends: 228 [2024-11-09 04:31:04,588 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 04:31:04,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:31:04,589 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:04,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 439 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:04,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 04:31:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 222. [2024-11-09 04:31:04,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 191 states have (on average 1.1675392670157068) internal successors, (223), 194 states have internal predecessors, (223), 22 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-09 04:31:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 268 transitions. [2024-11-09 04:31:04,619 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 268 transitions. Word has length 60 [2024-11-09 04:31:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:04,619 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 268 transitions. [2024-11-09 04:31:04,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 04:31:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 268 transitions. [2024-11-09 04:31:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 04:31:04,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:04,621 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:04,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (40)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:04,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:04,821 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:04,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 314309995, now seen corresponding path program 1 times [2024-11-09 04:31:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509165964] [2024-11-09 04:31:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:04,822 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 [2024-11-09 04:31:04,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:04,823 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:04,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (41)] Waiting until timeout for monitored process [2024-11-09 04:31:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:04,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:31:04,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:31:04,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:04,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509165964] [2024-11-09 04:31:04,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509165964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:04,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:04,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:31:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386255507] [2024-11-09 04:31:04,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:04,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:31:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:31:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:04,982 INFO L87 Difference]: Start difference. First operand 222 states and 268 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 04:31:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:05,085 INFO L93 Difference]: Finished difference Result 243 states and 289 transitions. [2024-11-09 04:31:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:31:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-11-09 04:31:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:05,087 INFO L225 Difference]: With dead ends: 243 [2024-11-09 04:31:05,087 INFO L226 Difference]: Without dead ends: 241 [2024-11-09 04:31:05,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:31:05,088 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 19 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:05,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 491 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-09 04:31:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 226. [2024-11-09 04:31:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 194 states have (on average 1.1649484536082475) internal successors, (226), 197 states have internal predecessors, (226), 22 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-09 04:31:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 271 transitions. [2024-11-09 04:31:05,107 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 271 transitions. Word has length 60 [2024-11-09 04:31:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:05,107 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 271 transitions. [2024-11-09 04:31:05,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 04:31:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 271 transitions. [2024-11-09 04:31:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 04:31:05,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:05,109 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:05,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (41)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:05,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:05,310 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:05,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:05,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2103290236, now seen corresponding path program 1 times [2024-11-09 04:31:05,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:05,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462038659] [2024-11-09 04:31:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:05,311 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 [2024-11-09 04:31:05,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:05,314 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:05,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (42)] Waiting until timeout for monitored process [2024-11-09 04:31:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:05,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 04:31:05,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 04:31:06,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:06,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462038659] [2024-11-09 04:31:06,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462038659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:06,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:06,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:31:06,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520909630] [2024-11-09 04:31:06,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:06,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:31:06,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:06,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:31:06,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:31:06,747 INFO L87 Difference]: Start difference. First operand 226 states and 271 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:10,034 INFO L93 Difference]: Finished difference Result 315 states and 383 transitions. [2024-11-09 04:31:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:31:10,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 65 [2024-11-09 04:31:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:10,037 INFO L225 Difference]: With dead ends: 315 [2024-11-09 04:31:10,037 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 04:31:10,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:31:10,038 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 28 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:10,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 857 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 04:31:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 04:31:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 244. [2024-11-09 04:31:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 209 states have (on average 1.167464114832536) internal successors, (244), 212 states have internal predecessors, (244), 25 states have call successors, (25), 7 states have call predecessors, (25), 9 states have return successors, (26), 25 states have call predecessors, (26), 23 states have call successors, (26) [2024-11-09 04:31:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 295 transitions. [2024-11-09 04:31:10,077 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 295 transitions. Word has length 65 [2024-11-09 04:31:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:10,078 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 295 transitions. [2024-11-09 04:31:10,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 295 transitions. [2024-11-09 04:31:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 04:31:10,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:10,080 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:10,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (42)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:10,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:10,284 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:10,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash -268449026, now seen corresponding path program 1 times [2024-11-09 04:31:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:10,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909837695] [2024-11-09 04:31:10,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:10,286 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 [2024-11-09 04:31:10,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:10,290 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:10,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (43)] Waiting until timeout for monitored process [2024-11-09 04:31:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:10,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:31:10,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 04:31:11,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:11,119 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:11,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909837695] [2024-11-09 04:31:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909837695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:11,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:11,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 04:31:11,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377619305] [2024-11-09 04:31:11,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:11,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:31:11,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:31:11,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:31:11,121 INFO L87 Difference]: Start difference. First operand 244 states and 295 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:13,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:31:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:14,858 INFO L93 Difference]: Finished difference Result 331 states and 404 transitions. [2024-11-09 04:31:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:31:14,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 65 [2024-11-09 04:31:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:14,861 INFO L225 Difference]: With dead ends: 331 [2024-11-09 04:31:14,861 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 04:31:14,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:31:14,862 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 28 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:14,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 591 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 305 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 04:31:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 04:31:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2024-11-09 04:31:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 204 states have (on average 1.1666666666666667) internal successors, (238), 207 states have internal predecessors, (238), 25 states have call successors, (25), 7 states have call predecessors, (25), 9 states have return successors, (26), 25 states have call predecessors, (26), 23 states have call successors, (26) [2024-11-09 04:31:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2024-11-09 04:31:14,886 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 65 [2024-11-09 04:31:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:14,887 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2024-11-09 04:31:14,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2024-11-09 04:31:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:31:14,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:14,888 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:14,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (43)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:15,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:15,089 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:15,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1873276140, now seen corresponding path program 1 times [2024-11-09 04:31:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:15,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016883523] [2024-11-09 04:31:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:15,090 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 [2024-11-09 04:31:15,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:15,091 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:15,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (44)] Waiting until timeout for monitored process [2024-11-09 04:31:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:15,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:31:15,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:31:16,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 04:31:16,935 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:16,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016883523] [2024-11-09 04:31:16,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016883523] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:16,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:31:16,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-11-09 04:31:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762492891] [2024-11-09 04:31:16,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:16,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:31:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:31:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:31:16,938 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:17,988 INFO L93 Difference]: Finished difference Result 304 states and 368 transitions. [2024-11-09 04:31:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:31:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2024-11-09 04:31:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:17,990 INFO L225 Difference]: With dead ends: 304 [2024-11-09 04:31:17,991 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 04:31:17,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:31:17,992 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 15 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:17,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 562 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 04:31:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 04:31:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 267. [2024-11-09 04:31:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 228 states have (on average 1.1578947368421053) internal successors, (264), 232 states have internal predecessors, (264), 29 states have call successors, (29), 7 states have call predecessors, (29), 9 states have return successors, (30), 29 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-09 04:31:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 323 transitions. [2024-11-09 04:31:18,019 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 323 transitions. Word has length 66 [2024-11-09 04:31:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:18,020 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 323 transitions. [2024-11-09 04:31:18,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 323 transitions. [2024-11-09 04:31:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:31:18,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:18,021 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:18,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (44)] Ended with exit code 0 [2024-11-09 04:31:18,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:18,222 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:18,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1323643010, now seen corresponding path program 1 times [2024-11-09 04:31:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:18,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255745859] [2024-11-09 04:31:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:18,223 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 [2024-11-09 04:31:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:18,224 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:18,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (45)] Waiting until timeout for monitored process [2024-11-09 04:31:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:18,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 04:31:18,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 04:31:19,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:19,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255745859] [2024-11-09 04:31:19,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255745859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1337796596] [2024-11-09 04:31:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:19,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:31:19,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:31:19,982 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:31:19,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-09 04:31:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:20,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 04:31:20,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 04:31:27,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1337796596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4308460] [2024-11-09 04:31:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:27,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:27,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:27,621 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:27,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-09 04:31:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:27,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:31:27,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 04:31:39,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:39,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4308460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:39,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:31:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 21 [2024-11-09 04:31:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222694156] [2024-11-09 04:31:39,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:39,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 04:31:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 04:31:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=527, Unknown=6, NotChecked=0, Total=600 [2024-11-09 04:31:39,286 INFO L87 Difference]: Start difference. First operand 267 states and 323 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 04:31:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:44,483 INFO L93 Difference]: Finished difference Result 366 states and 445 transitions. [2024-11-09 04:31:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 04:31:44,484 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2024-11-09 04:31:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:44,486 INFO L225 Difference]: With dead ends: 366 [2024-11-09 04:31:44,486 INFO L226 Difference]: Without dead ends: 330 [2024-11-09 04:31:44,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=94, Invalid=770, Unknown=6, NotChecked=0, Total=870 [2024-11-09 04:31:44,487 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 44 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:44,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1273 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 04:31:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-09 04:31:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 276. [2024-11-09 04:31:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 236 states have (on average 1.1652542372881356) internal successors, (275), 240 states have internal predecessors, (275), 30 states have call successors, (30), 7 states have call predecessors, (30), 9 states have return successors, (31), 30 states have call predecessors, (31), 28 states have call successors, (31) [2024-11-09 04:31:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2024-11-09 04:31:44,534 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 66 [2024-11-09 04:31:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:44,534 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2024-11-09 04:31:44,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 04:31:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2024-11-09 04:31:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:31:44,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:44,536 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:44,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:44,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2024-11-09 04:31:44,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (45)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:45,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:45,137 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:45,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash 814169920, now seen corresponding path program 1 times [2024-11-09 04:31:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992402647] [2024-11-09 04:31:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:45,139 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 [2024-11-09 04:31:45,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:45,140 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:45,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (48)] Waiting until timeout for monitored process [2024-11-09 04:31:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:45,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 04:31:45,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 04:31:45,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:45,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:45,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992402647] [2024-11-09 04:31:45,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992402647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:45,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:45,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:31:45,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332975617] [2024-11-09 04:31:45,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:45,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:31:45,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:45,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:31:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:31:45,518 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:46,328 INFO L93 Difference]: Finished difference Result 332 states and 401 transitions. [2024-11-09 04:31:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:31:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2024-11-09 04:31:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:46,331 INFO L225 Difference]: With dead ends: 332 [2024-11-09 04:31:46,331 INFO L226 Difference]: Without dead ends: 296 [2024-11-09 04:31:46,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:31:46,332 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 27 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:46,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 594 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:31:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-09 04:31:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 239. [2024-11-09 04:31:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 205 states have (on average 1.1512195121951219) internal successors, (236), 209 states have internal predecessors, (236), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (25), 24 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-09 04:31:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 285 transitions. [2024-11-09 04:31:46,361 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 285 transitions. Word has length 66 [2024-11-09 04:31:46,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:46,361 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 285 transitions. [2024-11-09 04:31:46,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 285 transitions. [2024-11-09 04:31:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 04:31:46,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:46,363 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:46,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (48)] Ended with exit code 0 [2024-11-09 04:31:46,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:46,563 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:46,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash -232125966, now seen corresponding path program 1 times [2024-11-09 04:31:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:46,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013936707] [2024-11-09 04:31:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:46,564 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 [2024-11-09 04:31:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:46,565 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:46,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (49)] Waiting until timeout for monitored process [2024-11-09 04:31:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:46,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:31:46,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 04:31:46,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:46,694 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013936707] [2024-11-09 04:31:46,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013936707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:46,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:46,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:31:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688327050] [2024-11-09 04:31:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:46,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:31:46,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:31:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:46,696 INFO L87 Difference]: Start difference. First operand 239 states and 285 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 04:31:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:46,813 INFO L93 Difference]: Finished difference Result 260 states and 306 transitions. [2024-11-09 04:31:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:31:46,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2024-11-09 04:31:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:46,815 INFO L225 Difference]: With dead ends: 260 [2024-11-09 04:31:46,815 INFO L226 Difference]: Without dead ends: 256 [2024-11-09 04:31:46,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:31:46,816 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 13 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:46,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 476 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-09 04:31:46,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 233. [2024-11-09 04:31:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 198 states have (on average 1.1515151515151516) internal successors, (228), 203 states have internal predecessors, (228), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-09 04:31:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 277 transitions. [2024-11-09 04:31:46,851 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 277 transitions. Word has length 68 [2024-11-09 04:31:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:46,851 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 277 transitions. [2024-11-09 04:31:46,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 04:31:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 277 transitions. [2024-11-09 04:31:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 04:31:46,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:46,852 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:46,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (49)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:47,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:47,053 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:47,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -174867664, now seen corresponding path program 1 times [2024-11-09 04:31:47,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:47,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718280154] [2024-11-09 04:31:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:47,054 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 [2024-11-09 04:31:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:47,055 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:47,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (50)] Waiting until timeout for monitored process [2024-11-09 04:31:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:47,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:31:47,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 04:31:48,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 04:31:49,260 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718280154] [2024-11-09 04:31:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718280154] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:49,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:31:49,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-11-09 04:31:49,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710995035] [2024-11-09 04:31:49,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:49,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:31:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:31:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:31:49,263 INFO L87 Difference]: Start difference. First operand 233 states and 277 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:50,479 INFO L93 Difference]: Finished difference Result 265 states and 310 transitions. [2024-11-09 04:31:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:31:50,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2024-11-09 04:31:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:50,482 INFO L225 Difference]: With dead ends: 265 [2024-11-09 04:31:50,482 INFO L226 Difference]: Without dead ends: 247 [2024-11-09 04:31:50,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:31:50,483 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 11 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:50,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 680 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 04:31:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-09 04:31:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 229. [2024-11-09 04:31:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 194 states have (on average 1.1391752577319587) internal successors, (221), 200 states have internal predecessors, (221), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-09 04:31:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 270 transitions. [2024-11-09 04:31:50,510 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 270 transitions. Word has length 68 [2024-11-09 04:31:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:50,511 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 270 transitions. [2024-11-09 04:31:50,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 04:31:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 270 transitions. [2024-11-09 04:31:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 04:31:50,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:50,512 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:50,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (50)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:50,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:50,713 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:50,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1120675140, now seen corresponding path program 1 times [2024-11-09 04:31:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87455368] [2024-11-09 04:31:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:50,715 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 [2024-11-09 04:31:50,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:50,719 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:50,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (51)] Waiting until timeout for monitored process [2024-11-09 04:31:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:50,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:31:50,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 04:31:50,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:50,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:50,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87455368] [2024-11-09 04:31:50,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87455368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:50,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:50,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:31:50,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116281096] [2024-11-09 04:31:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:50,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:31:50,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:50,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:31:50,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:50,918 INFO L87 Difference]: Start difference. First operand 229 states and 270 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 04:31:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:51,075 INFO L93 Difference]: Finished difference Result 247 states and 287 transitions. [2024-11-09 04:31:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:31:51,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2024-11-09 04:31:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:51,077 INFO L225 Difference]: With dead ends: 247 [2024-11-09 04:31:51,077 INFO L226 Difference]: Without dead ends: 165 [2024-11-09 04:31:51,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:31:51,078 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 13 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:51,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 469 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-09 04:31:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2024-11-09 04:31:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 128 states have internal predecessors, (143), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 04:31:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2024-11-09 04:31:51,099 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 68 [2024-11-09 04:31:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:51,100 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2024-11-09 04:31:51,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 04:31:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2024-11-09 04:31:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 04:31:51,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:51,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:51,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (51)] Ended with exit code 0 [2024-11-09 04:31:51,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:51,305 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:51,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1572187648, now seen corresponding path program 1 times [2024-11-09 04:31:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570478488] [2024-11-09 04:31:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:51,306 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 [2024-11-09 04:31:51,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:51,308 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:51,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (52)] Waiting until timeout for monitored process [2024-11-09 04:31:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:51,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:31:51,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 04:31:51,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:51,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570478488] [2024-11-09 04:31:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570478488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:51,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:31:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507504677] [2024-11-09 04:31:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:51,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:31:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:31:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:51,476 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:31:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:51,507 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2024-11-09 04:31:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:31:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-09 04:31:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:51,508 INFO L225 Difference]: With dead ends: 176 [2024-11-09 04:31:51,508 INFO L226 Difference]: Without dead ends: 130 [2024-11-09 04:31:51,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:51,509 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 15 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:51,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 268 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:31:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-09 04:31:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2024-11-09 04:31:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 104 states have (on average 1.125) internal successors, (117), 106 states have internal predecessors, (117), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 04:31:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2024-11-09 04:31:51,524 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 69 [2024-11-09 04:31:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:51,525 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2024-11-09 04:31:51,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:31:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2024-11-09 04:31:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 04:31:51,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:51,526 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:51,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (52)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:51,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:51,727 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:51,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -671795650, now seen corresponding path program 1 times [2024-11-09 04:31:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:51,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846868917] [2024-11-09 04:31:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:51,729 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 [2024-11-09 04:31:51,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:51,730 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:51,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (53)] Waiting until timeout for monitored process [2024-11-09 04:31:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:51,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:31:51,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:31:52,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:52,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846868917] [2024-11-09 04:31:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846868917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:52,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905118620] [2024-11-09 04:31:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:52,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:31:52,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:31:52,582 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:31:52,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2024-11-09 04:31:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:52,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:31:52,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 04:31:53,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905118620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:53,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:31:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-09 04:31:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100894559] [2024-11-09 04:31:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:53,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:31:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:31:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:31:53,036 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:31:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:53,298 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2024-11-09 04:31:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:31:53,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-09 04:31:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:53,300 INFO L225 Difference]: With dead ends: 170 [2024-11-09 04:31:53,300 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 04:31:53,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:31:53,301 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 20 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:53,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 308 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:31:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 04:31:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-09 04:31:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 106 states have internal predecessors, (116), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 04:31:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2024-11-09 04:31:53,317 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 69 [2024-11-09 04:31:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:53,318 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2024-11-09 04:31:53,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:31:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2024-11-09 04:31:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 04:31:53,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:53,319 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:53,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (53)] Ended with exit code 0 [2024-11-09 04:31:53,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:53,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:31:53,720 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:53,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash 29804224, now seen corresponding path program 1 times [2024-11-09 04:31:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:53,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119022479] [2024-11-09 04:31:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:53,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:31:53,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:53,722 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:53,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (55)] Waiting until timeout for monitored process [2024-11-09 04:31:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:53,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 04:31:53,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:31:54,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:54,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119022479] [2024-11-09 04:31:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119022479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1849930672] [2024-11-09 04:31:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:54,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:31:54,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:31:54,731 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:31:54,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2024-11-09 04:31:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:54,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:31:54,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:31:54,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:31:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1849930672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001602321] [2024-11-09 04:31:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:55,067 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:55,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-09 04:31:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:55,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:31:55,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:31:55,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 04:31:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001602321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:55,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 04:31:55,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8, 8, 8] total 11 [2024-11-09 04:31:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439631556] [2024-11-09 04:31:55,396 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:55,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:31:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:31:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:31:55,397 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:31:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:55,699 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2024-11-09 04:31:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:31:55,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 69 [2024-11-09 04:31:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:55,701 INFO L225 Difference]: With dead ends: 134 [2024-11-09 04:31:55,701 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 04:31:55,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 361 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:31:55,702 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:55,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 571 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:31:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 04:31:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-09 04:31:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 69 states have internal predecessors, (76), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 04:31:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2024-11-09 04:31:55,714 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 69 [2024-11-09 04:31:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:55,714 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2024-11-09 04:31:55,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:31:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2024-11-09 04:31:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 04:31:55,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:55,715 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:55,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (55)] Ended with exit code 0 [2024-11-09 04:31:55,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:56,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2024-11-09 04:31:56,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:31:56,317 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:56,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash -670003697, now seen corresponding path program 1 times [2024-11-09 04:31:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075486115] [2024-11-09 04:31:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:56,318 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 [2024-11-09 04:31:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:56,322 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:56,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (58)] Waiting until timeout for monitored process [2024-11-09 04:31:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:56,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:31:56,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 04:31:57,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:31:57,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:31:57,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075486115] [2024-11-09 04:31:57,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075486115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:57,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:57,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 04:31:57,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003104033] [2024-11-09 04:31:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:57,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:31:57,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:31:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:31:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:31:57,299 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:31:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:58,442 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2024-11-09 04:31:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:31:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 73 [2024-11-09 04:31:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:58,444 INFO L225 Difference]: With dead ends: 104 [2024-11-09 04:31:58,444 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 04:31:58,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:31:58,445 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 14 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:58,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 434 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:31:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 04:31:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-09 04:31:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 69 states have internal predecessors, (75), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 04:31:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2024-11-09 04:31:58,459 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 73 [2024-11-09 04:31:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:58,460 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2024-11-09 04:31:58,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:31:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2024-11-09 04:31:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 04:31:58,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:58,461 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:58,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (58)] Forceful destruction successful, exit code 0 [2024-11-09 04:31:58,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:31:58,665 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:58,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1514009199, now seen corresponding path program 1 times [2024-11-09 04:31:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:31:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804905758] [2024-11-09 04:31:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:58,666 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 [2024-11-09 04:31:58,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:31:58,668 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:31:58,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (59)] Waiting until timeout for monitored process [2024-11-09 04:31:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:58,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 04:31:58,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 04:32:00,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:00,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:00,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804905758] [2024-11-09 04:32:00,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804905758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:00,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:00,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:32:00,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648226412] [2024-11-09 04:32:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:00,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:32:00,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:32:00,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:32:00,654 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:32:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:02,784 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-11-09 04:32:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:32:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 73 [2024-11-09 04:32:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:02,786 INFO L225 Difference]: With dead ends: 95 [2024-11-09 04:32:02,786 INFO L226 Difference]: Without dead ends: 76 [2024-11-09 04:32:02,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:32:02,787 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 5 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:02,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 493 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 04:32:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-09 04:32:02,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2024-11-09 04:32:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 56 states have internal predecessors, (60), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:32:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-11-09 04:32:02,797 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 73 [2024-11-09 04:32:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:02,797 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-11-09 04:32:02,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:32:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-11-09 04:32:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 04:32:02,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:02,798 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:02,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (59)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:02,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:32:02,999 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:32:02,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1027887339, now seen corresponding path program 1 times [2024-11-09 04:32:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:03,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19519047] [2024-11-09 04:32:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:03,000 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 [2024-11-09 04:32:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:03,001 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:32:03,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (60)] Waiting until timeout for monitored process [2024-11-09 04:32:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:03,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:32:03,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 04:32:04,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:04,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:04,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19519047] [2024-11-09 04:32:04,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19519047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:04,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:04,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 04:32:04,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661403674] [2024-11-09 04:32:04,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:04,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:32:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:32:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:32:04,143 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:32:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:05,262 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2024-11-09 04:32:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:32:05,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2024-11-09 04:32:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:05,264 INFO L225 Difference]: With dead ends: 92 [2024-11-09 04:32:05,264 INFO L226 Difference]: Without dead ends: 68 [2024-11-09 04:32:05,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:32:05,265 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:05,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 470 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 04:32:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-09 04:32:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-09 04:32:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:32:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2024-11-09 04:32:05,272 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 74 [2024-11-09 04:32:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:05,272 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2024-11-09 04:32:05,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:32:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2024-11-09 04:32:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 04:32:05,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:05,273 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:05,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (60)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:05,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:32:05,474 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:32:05,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1422254125, now seen corresponding path program 1 times [2024-11-09 04:32:05,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:32:05,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38842258] [2024-11-09 04:32:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:05,475 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 [2024-11-09 04:32:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:32:05,476 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:32:05,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (61)] Waiting until timeout for monitored process [2024-11-09 04:32:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:05,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 04:32:05,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 04:32:07,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:32:07,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:32:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38842258] [2024-11-09 04:32:07,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38842258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:32:07,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:32:07,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 04:32:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215019032] [2024-11-09 04:32:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:32:07,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:32:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:32:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:32:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:32:07,782 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:32:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:08,891 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2024-11-09 04:32:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:32:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2024-11-09 04:32:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:08,893 INFO L225 Difference]: With dead ends: 68 [2024-11-09 04:32:08,893 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 04:32:08,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:32:08,894 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:08,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 441 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:32:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 04:32:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 04:32:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-09 04:32:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 04:32:08,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2024-11-09 04:32:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:08,896 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 04:32:08,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 04:32:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 04:32:08,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 04:32:08,899 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 04:32:08,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 (61)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:09,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:32:09,103 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:09,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 04:33:09,303 WARN L286 SmtUtils]: Spent 55.81s on a formula simplification. DAG size of input: 165 DAG size of output: 170 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-09 04:33:24,407 WARN L286 SmtUtils]: Spent 14.77s on a formula simplification. DAG size of input: 252 DAG size of output: 28 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-09 04:33:31,450 WARN L286 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 175 DAG size of output: 92 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-09 04:34:44,650 WARN L286 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 167 DAG size of output: 108 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-09 04:34:44,667 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:34:44,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:34:44 BoogieIcfgContainer [2024-11-09 04:34:44,696 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 04:34:44,697 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 04:34:44,697 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 04:34:44,698 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 04:34:44,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:06" (3/4) ... [2024-11-09 04:34:44,702 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 04:34:44,708 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-09 04:34:44,708 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 04:34:44,716 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-09 04:34:44,716 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 04:34:44,717 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 04:34:44,717 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 04:34:44,753 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0 != \old(m)) [2024-11-09 04:34:44,754 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0 != \old(m)) [2024-11-09 04:34:44,786 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0 != \old(m)) [2024-11-09 04:34:44,786 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0 != \old(m)) [2024-11-09 04:34:44,857 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 04:34:44,858 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 04:34:44,858 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 04:34:44,858 INFO L158 Benchmark]: Toolchain (without parser) took 279515.91ms. Allocated memory was 75.5MB in the beginning and 335.5MB in the end (delta: 260.0MB). Free memory was 50.4MB in the beginning and 128.3MB in the end (delta: -77.9MB). Peak memory consumption was 184.5MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,859 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:34:44,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.47ms. Allocated memory is still 75.5MB. Free memory was 50.2MB in the beginning and 33.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.16ms. Allocated memory is still 75.5MB. Free memory was 33.8MB in the beginning and 53.6MB in the end (delta: -19.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,860 INFO L158 Benchmark]: Boogie Preprocessor took 62.79ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 51.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,860 INFO L158 Benchmark]: RCFGBuilder took 513.80ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 32.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,860 INFO L158 Benchmark]: TraceAbstraction took 278206.94ms. Allocated memory was 75.5MB in the beginning and 335.5MB in the end (delta: 260.0MB). Free memory was 31.5MB in the beginning and 134.6MB in the end (delta: -103.1MB). Peak memory consumption was 185.3MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,861 INFO L158 Benchmark]: Witness Printer took 160.54ms. Allocated memory is still 335.5MB. Free memory was 134.6MB in the beginning and 128.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 04:34:44,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.47ms. Allocated memory is still 75.5MB. Free memory was 50.2MB in the beginning and 33.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.16ms. Allocated memory is still 75.5MB. Free memory was 33.8MB in the beginning and 53.6MB in the end (delta: -19.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.79ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 51.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.80ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 32.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 278206.94ms. Allocated memory was 75.5MB in the beginning and 335.5MB in the end (delta: 260.0MB). Free memory was 31.5MB in the beginning and 134.6MB in the end (delta: -103.1MB). Peak memory consumption was 185.3MB. Max. memory is 16.1GB. * Witness Printer took 160.54ms. Allocated memory is still 335.5MB. Free memory was 134.6MB in the beginning and 128.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 122.5s, OverallIterations: 45, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 50.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 1388 SdHoareTripleChecker+Valid, 44.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1278 mSDsluCounter, 25852 SdHoareTripleChecker+Invalid, 42.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21673 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7351 IncrementalHoareTripleChecker+Invalid, 7494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 4179 mSDtfsCounter, 7351 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4451 GetRequests, 3967 SyntacticMatches, 13 SemanticMatches, 471 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 47.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=17, InterpolantAutomatonStates: 389, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 45 MinimizatonAttempts, 952 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 54.0s InterpolantComputationTime, 3326 NumberOfCodeBlocks, 3308 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 4217 ConstructedInterpolants, 165 QuantifiedInterpolants, 14110 SizeOfPredicates, 121 NumberOfNonLiveVariables, 5883 ConjunctsInSsa, 618 ConjunctsInUnsatCore, 79 InterpolantComputations, 39 PerfectInterpolantSequences, 1463/1607 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (0 != \old(m)) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (0 != \old(m)) - ProcedureContractResult [Line: 25]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((0 != m) || (0 == \result)) - ProcedureContractResult [Line: 16]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (0 != cond) Ensures: (0 != cond) RESULT: Ultimate proved your program to be correct! [2024-11-09 04:34:44,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fbc5a3-3b6b-4994-adf1-b31305f65762/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE