./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31756dd7916efb2601436cea2f8a519d26122ead05d2ea63e4128142535cef4c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:41:59,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:41:59,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:41:59,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:41:59,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:41:59,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:41:59,346 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:41:59,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:41:59,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:41:59,348 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:41:59,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:41:59,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:41:59,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:41:59,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:41:59,351 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:41:59,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:41:59,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:41:59,352 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:41:59,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:41:59,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:41:59,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:41:59,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:41:59,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:41:59,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:41:59,356 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:41:59,356 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:41:59,356 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:41:59,356 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:41:59,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:41:59,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:41:59,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:41:59,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:41:59,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:41:59,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:41:59,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:41:59,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:41:59,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:41:59,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:41:59,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:41:59,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:41:59,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:41:59,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:41:59,361 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31756dd7916efb2601436cea2f8a519d26122ead05d2ea63e4128142535cef4c [2023-11-29 04:41:59,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:41:59,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:41:59,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:41:59,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:41:59,575 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:41:59,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i [2023-11-29 04:42:02,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:42:02,529 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:42:02,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i [2023-11-29 04:42:02,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data/371af06a1/b3facfac8a6e4957aa11a59a6d7e7999/FLAGdd2681a0f [2023-11-29 04:42:02,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data/371af06a1/b3facfac8a6e4957aa11a59a6d7e7999 [2023-11-29 04:42:02,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:42:02,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:42:02,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:42:02,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:42:02,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:42:02,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611d718e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02, skipping insertion in model container [2023-11-29 04:42:02,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,599 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:42:02,732 WARN L240 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_c41a84fe-0920-41ac-a467-002f790a6491/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i[914,927] [2023-11-29 04:42:02,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:42:02,793 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:42:02,805 WARN L240 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_c41a84fe-0920-41ac-a467-002f790a6491/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i[914,927] [2023-11-29 04:42:02,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:42:02,848 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:42:02,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02 WrapperNode [2023-11-29 04:42:02,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:42:02,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:42:02,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:42:02,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:42:02,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,906 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 154 [2023-11-29 04:42:02,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:42:02,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:42:02,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:42:02,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:42:02,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,943 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:42:02,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:42:02,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:42:02,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:42:02,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:42:02,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (1/1) ... [2023-11-29 04:42:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:42:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:03,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:42:03,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:42:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:42:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:42:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:42:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:42:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:42:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:42:03,109 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:42:03,110 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:42:03,422 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:42:03,456 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:42:03,456 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:42:03,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:03 BoogieIcfgContainer [2023-11-29 04:42:03,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:42:03,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:42:03,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:42:03,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:42:03,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:42:02" (1/3) ... [2023-11-29 04:42:03,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:03, skipping insertion in model container [2023-11-29 04:42:03,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:02" (2/3) ... [2023-11-29 04:42:03,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:03, skipping insertion in model container [2023-11-29 04:42:03,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:03" (3/3) ... [2023-11-29 04:42:03,464 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-3.i [2023-11-29 04:42:03,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:42:03,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:42:03,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:42:03,525 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4a9dbe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:42:03,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:42:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:42:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 04:42:03,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:03,540 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:03,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:03,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1665614243, now seen corresponding path program 1 times [2023-11-29 04:42:03,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:03,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954400102] [2023-11-29 04:42:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:03,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:03,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954400102] [2023-11-29 04:42:03,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:42:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38391281] [2023-11-29 04:42:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:03,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:03,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:03,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:03,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:42:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:03,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:42:03,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-29 04:42:03,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38391281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:42:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523279086] [2023-11-29 04:42:03,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:03,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:42:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:42:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:42:03,927 INFO L87 Difference]: Start difference. First operand has 63 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:42:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:03,962 INFO L93 Difference]: Finished difference Result 123 states and 217 transitions. [2023-11-29 04:42:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:42:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2023-11-29 04:42:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:03,971 INFO L225 Difference]: With dead ends: 123 [2023-11-29 04:42:03,971 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 04:42:03,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:42:03,977 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:03,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:42:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 04:42:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 04:42:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:42:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 96 transitions. [2023-11-29 04:42:04,015 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 96 transitions. Word has length 101 [2023-11-29 04:42:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:04,015 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 96 transitions. [2023-11-29 04:42:04,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:42:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 96 transitions. [2023-11-29 04:42:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 04:42:04,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:04,021 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:04,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:42:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:42:04,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:04,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash -994212005, now seen corresponding path program 1 times [2023-11-29 04:42:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966054485] [2023-11-29 04:42:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:04,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:04,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:04,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73160125] [2023-11-29 04:42:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:04,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:04,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:04,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:04,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:42:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:04,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:42:04,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:42:04,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966054485] [2023-11-29 04:42:04,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73160125] [2023-11-29 04:42:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73160125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:04,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:04,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:42:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133456350] [2023-11-29 04:42:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:04,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:42:04,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:04,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:42:04,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:42:04,587 INFO L87 Difference]: Start difference. First operand 61 states and 96 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:04,650 INFO L93 Difference]: Finished difference Result 181 states and 286 transitions. [2023-11-29 04:42:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:42:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2023-11-29 04:42:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:04,654 INFO L225 Difference]: With dead ends: 181 [2023-11-29 04:42:04,654 INFO L226 Difference]: Without dead ends: 121 [2023-11-29 04:42:04,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:42:04,656 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 40 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:04,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 168 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:42:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-29 04:42:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-11-29 04:42:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 86 states have internal predecessors, (126), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:42:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 186 transitions. [2023-11-29 04:42:04,683 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 186 transitions. Word has length 101 [2023-11-29 04:42:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:04,684 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 186 transitions. [2023-11-29 04:42:04,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 186 transitions. [2023-11-29 04:42:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 04:42:04,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:04,687 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:04,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:42:04,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 04:42:04,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:04,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 166742404, now seen corresponding path program 1 times [2023-11-29 04:42:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210289032] [2023-11-29 04:42:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:04,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870031102] [2023-11-29 04:42:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:04,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:04,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:04,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:42:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:05,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:42:05,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:42:05,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:05,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210289032] [2023-11-29 04:42:05,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870031102] [2023-11-29 04:42:05,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870031102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:05,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:05,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:42:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164510247] [2023-11-29 04:42:05,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:42:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:42:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:42:05,088 INFO L87 Difference]: Start difference. First operand 119 states and 186 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:05,165 INFO L93 Difference]: Finished difference Result 351 states and 550 transitions. [2023-11-29 04:42:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:42:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-29 04:42:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:05,169 INFO L225 Difference]: With dead ends: 351 [2023-11-29 04:42:05,169 INFO L226 Difference]: Without dead ends: 233 [2023-11-29 04:42:05,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:42:05,172 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 84 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:05,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 242 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:42:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-29 04:42:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2023-11-29 04:42:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 166 states have (on average 1.4337349397590362) internal successors, (238), 166 states have internal predecessors, (238), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 04:42:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 358 transitions. [2023-11-29 04:42:05,207 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 358 transitions. Word has length 102 [2023-11-29 04:42:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:05,208 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 358 transitions. [2023-11-29 04:42:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 358 transitions. [2023-11-29 04:42:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 04:42:05,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:05,211 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:05,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:42:05,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:05,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:05,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -697937686, now seen corresponding path program 1 times [2023-11-29 04:42:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597965562] [2023-11-29 04:42:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:05,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371095128] [2023-11-29 04:42:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:05,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:05,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:42:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:05,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:42:05,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:42:05,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:05,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597965562] [2023-11-29 04:42:05,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371095128] [2023-11-29 04:42:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371095128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:05,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:05,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:42:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407932802] [2023-11-29 04:42:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:42:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:05,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:42:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:42:05,598 INFO L87 Difference]: Start difference. First operand 231 states and 358 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:05,648 INFO L93 Difference]: Finished difference Result 567 states and 876 transitions. [2023-11-29 04:42:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:42:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-29 04:42:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:05,652 INFO L225 Difference]: With dead ends: 567 [2023-11-29 04:42:05,653 INFO L226 Difference]: Without dead ends: 337 [2023-11-29 04:42:05,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:42:05,655 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 37 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:05,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 204 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:42:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-29 04:42:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 267. [2023-11-29 04:42:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 202 states have (on average 1.4356435643564356) internal successors, (290), 202 states have internal predecessors, (290), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 04:42:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 410 transitions. [2023-11-29 04:42:05,698 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 410 transitions. Word has length 102 [2023-11-29 04:42:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:05,698 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 410 transitions. [2023-11-29 04:42:05,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 410 transitions. [2023-11-29 04:42:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:42:05,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:05,701 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:05,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:42:05,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:05,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:05,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:05,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1111361172, now seen corresponding path program 1 times [2023-11-29 04:42:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379196215] [2023-11-29 04:42:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:05,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:05,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824080740] [2023-11-29 04:42:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:05,939 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:05,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:42:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:06,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:42:06,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-29 04:42:06,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379196215] [2023-11-29 04:42:06,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824080740] [2023-11-29 04:42:06,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824080740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:06,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:06,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:42:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633375506] [2023-11-29 04:42:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:06,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:42:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:42:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:42:06,664 INFO L87 Difference]: Start difference. First operand 267 states and 410 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:42:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:07,061 INFO L93 Difference]: Finished difference Result 939 states and 1445 transitions. [2023-11-29 04:42:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:42:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 103 [2023-11-29 04:42:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:07,068 INFO L225 Difference]: With dead ends: 939 [2023-11-29 04:42:07,068 INFO L226 Difference]: Without dead ends: 673 [2023-11-29 04:42:07,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:42:07,070 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 170 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:07,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 447 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:42:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-11-29 04:42:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 661. [2023-11-29 04:42:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 500 states have (on average 1.446) internal successors, (723), 500 states have internal predecessors, (723), 150 states have call successors, (150), 10 states have call predecessors, (150), 10 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-29 04:42:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1023 transitions. [2023-11-29 04:42:07,139 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1023 transitions. Word has length 103 [2023-11-29 04:42:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:07,140 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1023 transitions. [2023-11-29 04:42:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:42:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1023 transitions. [2023-11-29 04:42:07,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:42:07,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:07,143 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:07,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:42:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:07,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2096387530, now seen corresponding path program 1 times [2023-11-29 04:42:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480268962] [2023-11-29 04:42:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:07,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:07,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083330604] [2023-11-29 04:42:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:07,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:07,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:07,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:42:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:07,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:42:07,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 287 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 04:42:08,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:42:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 87 proven. 30 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-11-29 04:42:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480268962] [2023-11-29 04:42:09,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083330604] [2023-11-29 04:42:09,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083330604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:42:09,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:42:09,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 04:42:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708823569] [2023-11-29 04:42:09,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:42:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 04:42:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 04:42:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:42:09,146 INFO L87 Difference]: Start difference. First operand 661 states and 1023 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (23), 3 states have call predecessors, (23), 9 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-29 04:42:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:09,904 INFO L93 Difference]: Finished difference Result 1159 states and 1729 transitions. [2023-11-29 04:42:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:42:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (23), 3 states have call predecessors, (23), 9 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) Word has length 103 [2023-11-29 04:42:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:09,908 INFO L225 Difference]: With dead ends: 1159 [2023-11-29 04:42:09,908 INFO L226 Difference]: Without dead ends: 499 [2023-11-29 04:42:09,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=437, Invalid=969, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 04:42:09,911 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 240 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:09,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 276 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:42:09,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-29 04:42:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2023-11-29 04:42:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 360 states have (on average 1.363888888888889) internal successors, (491), 360 states have internal predecessors, (491), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 04:42:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 671 transitions. [2023-11-29 04:42:09,965 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 671 transitions. Word has length 103 [2023-11-29 04:42:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:09,966 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 671 transitions. [2023-11-29 04:42:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (23), 3 states have call predecessors, (23), 9 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-29 04:42:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 671 transitions. [2023-11-29 04:42:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:42:09,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:09,968 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:09,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:42:10,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:10,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash 494501675, now seen corresponding path program 1 times [2023-11-29 04:42:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753583910] [2023-11-29 04:42:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:10,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:10,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414024572] [2023-11-29 04:42:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:10,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:10,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:10,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:10,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:42:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:10,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:42:10,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:42:10,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753583910] [2023-11-29 04:42:10,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414024572] [2023-11-29 04:42:10,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414024572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:10,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:10,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:42:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824515335] [2023-11-29 04:42:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:10,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:42:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:42:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:42:10,431 INFO L87 Difference]: Start difference. First operand 475 states and 671 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:10,649 INFO L93 Difference]: Finished difference Result 940 states and 1332 transitions. [2023-11-29 04:42:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:42:10,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2023-11-29 04:42:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:10,654 INFO L225 Difference]: With dead ends: 940 [2023-11-29 04:42:10,655 INFO L226 Difference]: Without dead ends: 701 [2023-11-29 04:42:10,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:42:10,657 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 89 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:10,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 533 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:42:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-11-29 04:42:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 550. [2023-11-29 04:42:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 435 states have (on average 1.3770114942528735) internal successors, (599), 435 states have internal predecessors, (599), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 04:42:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 779 transitions. [2023-11-29 04:42:10,730 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 779 transitions. Word has length 103 [2023-11-29 04:42:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:10,731 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 779 transitions. [2023-11-29 04:42:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 779 transitions. [2023-11-29 04:42:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 04:42:10,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:10,733 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:10,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:42:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:10,937 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:10,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1416990502, now seen corresponding path program 1 times [2023-11-29 04:42:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735517303] [2023-11-29 04:42:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:10,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:10,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109146296] [2023-11-29 04:42:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:10,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:10,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:42:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:42:11,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:42:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:42:11,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:42:11,495 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:42:11,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 04:42:11,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:42:11,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:11,700 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:11,702 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:42:11,758 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-29 04:42:11,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-29 04:42:11,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:42:11 BoogieIcfgContainer [2023-11-29 04:42:11,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:42:11,779 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:42:11,779 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:42:11,779 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:42:11,779 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:03" (3/4) ... [2023-11-29 04:42:11,781 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:42:11,782 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:42:11,783 INFO L158 Benchmark]: Toolchain (without parser) took 9223.05ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 126.2MB in the beginning and 75.0MB in the end (delta: 51.2MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. [2023-11-29 04:42:11,783 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:42:11,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.14ms. Allocated memory is still 161.5MB. Free memory was 125.8MB in the beginning and 112.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:42:11,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.24ms. Allocated memory is still 161.5MB. Free memory was 112.5MB in the beginning and 108.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:42:11,784 INFO L158 Benchmark]: Boogie Preprocessor took 60.08ms. Allocated memory is still 161.5MB. Free memory was 108.7MB in the beginning and 103.2MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 04:42:11,784 INFO L158 Benchmark]: RCFGBuilder took 488.28ms. Allocated memory is still 161.5MB. Free memory was 103.2MB in the beginning and 123.8MB in the end (delta: -20.5MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-11-29 04:42:11,785 INFO L158 Benchmark]: TraceAbstraction took 8319.06ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 123.8MB in the beginning and 75.0MB in the end (delta: 48.7MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2023-11-29 04:42:11,785 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 197.1MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:42:11,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.14ms. Allocated memory is still 161.5MB. Free memory was 125.8MB in the beginning and 112.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.24ms. Allocated memory is still 161.5MB. Free memory was 112.5MB in the beginning and 108.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.08ms. Allocated memory is still 161.5MB. Free memory was 108.7MB in the beginning and 103.2MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 488.28ms. Allocated memory is still 161.5MB. Free memory was 103.2MB in the beginning and 123.8MB in the end (delta: -20.5MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8319.06ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 123.8MB in the beginning and 75.0MB in the end (delta: 48.7MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 197.1MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: 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 someBinaryDOUBLEComparisonOperation at line 117, overapproximation of bitwiseOr at line 80. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = -64; [L23] unsigned char var_1_3 = 1; [L24] signed char var_1_5 = -32; [L25] unsigned short int var_1_6 = 256; [L26] unsigned long int var_1_10 = 256; [L27] double var_1_12 = 8.2; [L28] signed char var_1_13 = 16; [L29] signed char var_1_14 = 10; [L30] double var_1_15 = 199.125; [L31] double var_1_16 = 9.4; [L32] double var_1_17 = 9999999999999.6; [L33] unsigned char var_1_20 = 32; [L34] unsigned char var_1_21 = 128; [L35] unsigned char var_1_22 = 64; [L36] unsigned long int var_1_23 = 64; [L37] unsigned long int last_1_var_1_10 = 256; [L38] unsigned char last_1_var_1_20 = 32; [L121] isInitial = 1 [L122] FCALL initially() [L123] COND TRUE 1 [L124] CALL updateLastVariables() [L113] last_1_var_1_10 = var_1_10 [L114] last_1_var_1_20 = var_1_20 [L124] RET updateLastVariables() [L125] CALL updateVariables() [L88] var_1_3 = __VERIFIER_nondet_uchar() [L89] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L89] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L90] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L90] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L91] var_1_5 = __VERIFIER_nondet_char() [L92] CALL assume_abort_if_not(var_1_5 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L92] RET assume_abort_if_not(var_1_5 >= -127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L93] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L93] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L94] var_1_13 = __VERIFIER_nondet_char() [L95] CALL assume_abort_if_not(var_1_13 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L95] RET assume_abort_if_not(var_1_13 >= -1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L96] CALL assume_abort_if_not(var_1_13 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L96] RET assume_abort_if_not(var_1_13 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L97] var_1_14 = __VERIFIER_nondet_char() [L98] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L98] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L99] CALL assume_abort_if_not(var_1_14 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L99] RET assume_abort_if_not(var_1_14 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L100] var_1_15 = __VERIFIER_nondet_double() [L101] CALL assume_abort_if_not((var_1_15 >= -922337.2036854776000e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L101] RET assume_abort_if_not((var_1_15 >= -922337.2036854776000e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L102] CALL assume_abort_if_not(var_1_15 != 0.0F) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L102] RET assume_abort_if_not(var_1_15 != 0.0F) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L103] var_1_16 = __VERIFIER_nondet_double() [L104] CALL assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L104] RET assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L105] var_1_21 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_21 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L106] RET assume_abort_if_not(var_1_21 >= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L107] CALL assume_abort_if_not(var_1_21 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L107] RET assume_abort_if_not(var_1_21 <= 254) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L108] var_1_22 = __VERIFIER_nondet_uchar() [L109] CALL assume_abort_if_not(var_1_22 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L109] RET assume_abort_if_not(var_1_22 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L110] CALL assume_abort_if_not(var_1_22 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L110] RET assume_abort_if_not(var_1_22 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L125] RET updateVariables() [L126] CALL step() [L42] COND FALSE !(\read(var_1_3)) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L47] signed long int stepLocal_2 = var_1_5 * var_1_13; VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L48] COND TRUE stepLocal_2 > last_1_var_1_10 [L49] var_1_20 = ((((((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) < 0 ) ? -(((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) : (((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))))) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L51] COND FALSE !((((((var_1_14 - var_1_20)) < (var_1_5)) ? ((var_1_14 - var_1_20)) : (var_1_5))) < var_1_20) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L56] unsigned char stepLocal_1 = var_1_17 <= var_1_17; VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L57] COND FALSE !(stepLocal_1 || var_1_3) [L62] var_1_12 = var_1_16 VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L64] COND FALSE !(99999.8f < var_1_17) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L75] COND FALSE !((var_1_17 + var_1_12) <= var_1_17) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L80] EXPR var_1_6 ^ var_1_20 VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L80] unsigned long int stepLocal_0 = (var_1_6 ^ var_1_20) + var_1_23; [L81] COND TRUE var_1_20 <= stepLocal_0 VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_0=328, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L82] COND FALSE !(var_1_12 == var_1_12) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_0=328, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L126] RET step() [L127] CALL, EXPR property() [L117] EXPR (((99999.8f < var_1_17) ? ((! var_1_3) ? ((var_1_17 >= (var_1_17 / 2.5f)) ? (var_1_3 ? (var_1_1 == ((signed char) var_1_5)) : (var_1_1 == ((signed char) var_1_5))) : 1) : 1) : 1) && (var_1_3 ? (((last_1_var_1_10 + (var_1_5 + last_1_var_1_20)) >= last_1_var_1_20) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1) : 1)) && ((var_1_20 <= ((var_1_6 ^ var_1_20) + var_1_23)) ? ((var_1_12 == var_1_12) ? (var_1_10 == ((unsigned long int) 0u)) : 1) : 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L117-L118] return (((((((99999.8f < var_1_17) ? ((! var_1_3) ? ((var_1_17 >= (var_1_17 / 2.5f)) ? (var_1_3 ? (var_1_1 == ((signed char) var_1_5)) : (var_1_1 == ((signed char) var_1_5))) : 1) : 1) : 1) && (var_1_3 ? (((last_1_var_1_10 + (var_1_5 + last_1_var_1_20)) >= last_1_var_1_20) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1) : 1)) && ((var_1_20 <= ((var_1_6 ^ var_1_20) + var_1_23)) ? ((var_1_12 == var_1_12) ? (var_1_10 == ((unsigned long int) 0u)) : 1) : 1)) && (((var_1_17 <= var_1_17) || var_1_3) ? (((var_1_17 / var_1_15) > 25.25) ? (var_1_12 == ((double) 128.5)) : 1) : (var_1_12 == ((double) var_1_16)))) && (((((((var_1_14 - var_1_20)) < (var_1_5)) ? ((var_1_14 - var_1_20)) : (var_1_5))) < var_1_20) ? (var_1_3 ? (var_1_17 == ((double) 128.1)) : 1) : 1)) && (((var_1_5 * var_1_13) > last_1_var_1_10) ? (var_1_20 == ((unsigned char) ((((((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) < 0 ) ? -(((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) : (((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))))))) : 1)) && (((var_1_17 + var_1_12) <= var_1_17) ? ((var_1_6 >= var_1_6) ? (var_1_23 == ((unsigned long int) var_1_20)) : 1) : 1) ; [L127] RET, EXPR property() [L127] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 8, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 660 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 660 mSDsluCounter, 1963 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1228 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 710 IncrementalHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 735 mSDtfsCounter, 710 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 834 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=661occurred in iteration=5, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 261 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 920 NumberOfCodeBlocks, 920 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 2995 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1738 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 3309/3360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 04:42:11,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31756dd7916efb2601436cea2f8a519d26122ead05d2ea63e4128142535cef4c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:42:13,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:42:13,742 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 04:42:13,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:42:13,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:42:13,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:42:13,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:42:13,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:42:13,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:42:13,776 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:42:13,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:42:13,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:42:13,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:42:13,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:42:13,779 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:42:13,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:42:13,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:42:13,781 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:42:13,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:42:13,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:42:13,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:42:13,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:42:13,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:42:13,785 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:42:13,785 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:42:13,786 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:42:13,786 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:42:13,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:42:13,787 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:42:13,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:42:13,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:42:13,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:42:13,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:42:13,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:42:13,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:42:13,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:42:13,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:42:13,790 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:42:13,790 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:42:13,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:42:13,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:42:13,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:42:13,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:42:13,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:42:13,791 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:42:13,791 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31756dd7916efb2601436cea2f8a519d26122ead05d2ea63e4128142535cef4c [2023-11-29 04:42:14,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:42:14,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:42:14,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:42:14,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:42:14,120 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:42:14,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i [2023-11-29 04:42:16,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:42:17,101 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:42:17,102 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i [2023-11-29 04:42:17,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data/ab5e7a208/8eff0d17e9674aba8ce624670a1e418c/FLAGe86e890c1 [2023-11-29 04:42:17,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/data/ab5e7a208/8eff0d17e9674aba8ce624670a1e418c [2023-11-29 04:42:17,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:42:17,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:42:17,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:42:17,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:42:17,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:42:17,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8a325e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17, skipping insertion in model container [2023-11-29 04:42:17,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,173 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:42:17,340 WARN L240 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_c41a84fe-0920-41ac-a467-002f790a6491/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i[914,927] [2023-11-29 04:42:17,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:42:17,409 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:42:17,422 WARN L240 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_c41a84fe-0920-41ac-a467-002f790a6491/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-3.i[914,927] [2023-11-29 04:42:17,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:42:17,469 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:42:17,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17 WrapperNode [2023-11-29 04:42:17,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:42:17,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:42:17,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:42:17,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:42:17,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,518 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-29 04:42:17,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:42:17,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:42:17,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:42:17,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:42:17,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,550 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:42:17,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:42:17,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:42:17,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:42:17,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:42:17,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (1/1) ... [2023-11-29 04:42:17,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:42:17,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:17,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:42:17,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:42:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:42:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:42:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:42:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:42:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:42:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:42:17,716 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:42:17,719 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:42:35,234 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:42:35,275 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:42:35,275 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:42:35,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:35 BoogieIcfgContainer [2023-11-29 04:42:35,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:42:35,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:42:35,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:42:35,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:42:35,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:42:17" (1/3) ... [2023-11-29 04:42:35,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649800a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:35, skipping insertion in model container [2023-11-29 04:42:35,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:42:17" (2/3) ... [2023-11-29 04:42:35,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649800a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:42:35, skipping insertion in model container [2023-11-29 04:42:35,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:42:35" (3/3) ... [2023-11-29 04:42:35,286 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-3.i [2023-11-29 04:42:35,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:42:35,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:42:35,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:42:35,350 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1130f712, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:42:35,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:42:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:42:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 04:42:35,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:35,367 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:35,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:35,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 879549835, now seen corresponding path program 1 times [2023-11-29 04:42:35,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:42:35,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190860574] [2023-11-29 04:42:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:35,385 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 [2023-11-29 04:42:35,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:42:35,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:42:35,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:42:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:36,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:42:36,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-29 04:42:36,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:36,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:42:36,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190860574] [2023-11-29 04:42:36,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190860574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:36,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:42:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346534700] [2023-11-29 04:42:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:36,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:42:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:42:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:42:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:42:36,547 INFO L87 Difference]: Start difference. First operand has 54 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:42:41,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:42:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:41,809 INFO L93 Difference]: Finished difference Result 105 states and 185 transitions. [2023-11-29 04:42:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:42:42,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 98 [2023-11-29 04:42:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:42,160 INFO L225 Difference]: With dead ends: 105 [2023-11-29 04:42:42,160 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 04:42:42,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:42:42,166 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:42,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 04:42:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 04:42:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-29 04:42:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:42:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 80 transitions. [2023-11-29 04:42:42,202 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 80 transitions. Word has length 98 [2023-11-29 04:42:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:42,203 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 80 transitions. [2023-11-29 04:42:42,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:42:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 80 transitions. [2023-11-29 04:42:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 04:42:42,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:42,208 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:42,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:42:42,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:42:42,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:42:42,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1867586227, now seen corresponding path program 1 times [2023-11-29 04:42:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:42:42,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631025506] [2023-11-29 04:42:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:42,411 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 [2023-11-29 04:42:42,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:42:42,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:42:42,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 04:42:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:43,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:42:43,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:42:44,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:44,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:42:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631025506] [2023-11-29 04:42:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631025506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:44,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:44,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:42:44,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992121003] [2023-11-29 04:42:44,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:42:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:42:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:42:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:42:44,849 INFO L87 Difference]: Start difference. First operand 52 states and 80 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:42:49,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:42:54,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:42:59,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:04,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:09,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:12,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:17,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:21,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:25,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:29,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:33,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:34,215 INFO L93 Difference]: Finished difference Result 154 states and 238 transitions. [2023-11-29 04:43:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:43:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 98 [2023-11-29 04:43:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:34,219 INFO L225 Difference]: With dead ends: 154 [2023-11-29 04:43:34,219 INFO L226 Difference]: Without dead ends: 103 [2023-11-29 04:43:34,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:43:34,220 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 46 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:34,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 227 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 9 Unknown, 0 Unchecked, 49.3s Time] [2023-11-29 04:43:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-29 04:43:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2023-11-29 04:43:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:43:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2023-11-29 04:43:34,254 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 98 [2023-11-29 04:43:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:34,255 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2023-11-29 04:43:34,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:43:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2023-11-29 04:43:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 04:43:34,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:34,258 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:34,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:43:34,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:43:34,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:43:34,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1794343179, now seen corresponding path program 1 times [2023-11-29 04:43:34,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:43:34,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734835365] [2023-11-29 04:43:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:34,460 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 [2023-11-29 04:43:34,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:43:34,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:43:34,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 04:43:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:35,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:43:35,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:43:35,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:43:35,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:43:35,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734835365] [2023-11-29 04:43:35,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734835365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:43:35,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:43:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:43:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451268337] [2023-11-29 04:43:35,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:43:35,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:43:35,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:43:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:43:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:43:35,585 INFO L87 Difference]: Start difference. First operand 101 states and 155 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:43:40,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:44,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:48,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:43:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:49,353 INFO L93 Difference]: Finished difference Result 239 states and 366 transitions. [2023-11-29 04:43:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:43:49,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2023-11-29 04:43:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:49,356 INFO L225 Difference]: With dead ends: 239 [2023-11-29 04:43:49,357 INFO L226 Difference]: Without dead ends: 139 [2023-11-29 04:43:49,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:43:49,359 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:49,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 135 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2023-11-29 04:43:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-29 04:43:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2023-11-29 04:43:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 86 states have internal predecessors, (119), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:43:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 179 transitions. [2023-11-29 04:43:49,374 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 179 transitions. Word has length 99 [2023-11-29 04:43:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:49,375 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 179 transitions. [2023-11-29 04:43:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:43:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 179 transitions. [2023-11-29 04:43:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 04:43:49,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:49,377 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:49,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:43:49,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:43:49,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:43:49,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash 255512308, now seen corresponding path program 1 times [2023-11-29 04:43:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:43:49,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765742709] [2023-11-29 04:43:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:49,579 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 [2023-11-29 04:43:49,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:43:49,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:43:49,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:43:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:50,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:43:50,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:43:52,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:43:52,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:43:52,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765742709] [2023-11-29 04:43:52,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765742709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:43:52,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:43:52,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:43:52,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266069821] [2023-11-29 04:43:52,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:43:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:43:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:43:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:43:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:43:52,208 INFO L87 Difference]: Start difference. First operand 119 states and 179 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:43:57,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:01,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:05,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:10,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:14,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:18,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:23,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:28,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:30,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:36,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:40,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:44,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:48,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:52,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:44:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:44:53,483 INFO L93 Difference]: Finished difference Result 177 states and 266 transitions. [2023-11-29 04:44:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:44:53,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 100 [2023-11-29 04:44:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:44:53,486 INFO L225 Difference]: With dead ends: 177 [2023-11-29 04:44:53,486 INFO L226 Difference]: Without dead ends: 117 [2023-11-29 04:44:53,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:44:53,489 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 81 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 31 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:44:53,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 285 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 58 Invalid, 13 Unknown, 0 Unchecked, 61.1s Time] [2023-11-29 04:44:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-29 04:44:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2023-11-29 04:44:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 78 states have internal predecessors, (104), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:44:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 164 transitions. [2023-11-29 04:44:53,508 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 164 transitions. Word has length 100 [2023-11-29 04:44:53,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:44:53,509 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 164 transitions. [2023-11-29 04:44:53,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:44:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 164 transitions. [2023-11-29 04:44:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 04:44:53,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:44:53,512 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:44:53,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:44:53,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:44:53,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:44:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:44:53,714 INFO L85 PathProgramCache]: Analyzing trace with hash -465799830, now seen corresponding path program 1 times [2023-11-29 04:44:53,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:44:53,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700817100] [2023-11-29 04:44:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:44:53,714 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 [2023-11-29 04:44:53,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:44:53,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:44:53,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:44:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:44:54,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:44:54,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:44:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:44:58,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:44:58,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:44:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700817100] [2023-11-29 04:44:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700817100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:44:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:44:58,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:44:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489807828] [2023-11-29 04:44:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:44:58,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:44:58,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:44:58,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:44:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:44:58,031 INFO L87 Difference]: Start difference. First operand 111 states and 164 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:45:04,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:08,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:12,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:16,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:20,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:24,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:28,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:32,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:36,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:40,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:44,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:48,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:52,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:45:56,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:00,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:04,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:08,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:15,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:19,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:23,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:27,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:27,921 INFO L93 Difference]: Finished difference Result 639 states and 938 transitions. [2023-11-29 04:46:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:46:27,922 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), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2023-11-29 04:46:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:27,928 INFO L225 Difference]: With dead ends: 639 [2023-11-29 04:46:27,928 INFO L226 Difference]: Without dead ends: 529 [2023-11-29 04:46:27,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:46:27,931 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 184 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 31 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:27,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 611 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 235 Invalid, 21 Unknown, 0 Unchecked, 89.4s Time] [2023-11-29 04:46:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-29 04:46:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 429. [2023-11-29 04:46:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 300 states have (on average 1.3333333333333333) internal successors, (400), 300 states have internal predecessors, (400), 120 states have call successors, (120), 8 states have call predecessors, (120), 8 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-29 04:46:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 640 transitions. [2023-11-29 04:46:28,004 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 640 transitions. Word has length 101 [2023-11-29 04:46:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:28,004 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 640 transitions. [2023-11-29 04:46:28,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:46:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 640 transitions. [2023-11-29 04:46:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 04:46:28,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:28,008 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:28,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:46:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:46:28,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:28,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1745663508, now seen corresponding path program 1 times [2023-11-29 04:46:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:28,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632321443] [2023-11-29 04:46:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:28,212 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 [2023-11-29 04:46:28,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:28,213 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:46:28,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:46:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:29,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:46:29,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:46:31,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:46:31,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632321443] [2023-11-29 04:46:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632321443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:31,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574038499] [2023-11-29 04:46:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:46:31,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:46:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:46:31,665 INFO L87 Difference]: Start difference. First operand 429 states and 640 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:46:37,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:41,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:45,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:50,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:54,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:58,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:46:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:58,855 INFO L93 Difference]: Finished difference Result 1217 states and 1803 transitions. [2023-11-29 04:46:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:46:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2023-11-29 04:46:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:59,210 INFO L225 Difference]: With dead ends: 1217 [2023-11-29 04:46:59,210 INFO L226 Difference]: Without dead ends: 789 [2023-11-29 04:46:59,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:46:59,212 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 75 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 31 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:59,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 227 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 27.1s Time] [2023-11-29 04:46:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-11-29 04:46:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 690. [2023-11-29 04:46:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 481 states have (on average 1.32016632016632) internal successors, (635), 481 states have internal predecessors, (635), 195 states have call successors, (195), 13 states have call predecessors, (195), 13 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2023-11-29 04:46:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1025 transitions. [2023-11-29 04:46:59,307 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1025 transitions. Word has length 101 [2023-11-29 04:46:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:59,308 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1025 transitions. [2023-11-29 04:46:59,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:46:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1025 transitions. [2023-11-29 04:46:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 04:46:59,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:59,310 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:59,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:46:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:46:59,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:59,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:59,515 INFO L85 PathProgramCache]: Analyzing trace with hash -271893888, now seen corresponding path program 1 times [2023-11-29 04:46:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360286367] [2023-11-29 04:46:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:59,516 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 [2023-11-29 04:46:59,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:59,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:46:59,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:47:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:00,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:47:00,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:47:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:47:03,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:47:03,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:47:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360286367] [2023-11-29 04:47:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360286367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:47:03,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:47:03,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:47:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140811815] [2023-11-29 04:47:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:47:03,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:47:03,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:47:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:47:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:47:03,229 INFO L87 Difference]: Start difference. First operand 690 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:47:08,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:47:12,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:47:16,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:47:20,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:47:24,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:47:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:47:25,124 INFO L93 Difference]: Finished difference Result 1491 states and 2214 transitions. [2023-11-29 04:47:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:47:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-29 04:47:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:47:25,130 INFO L225 Difference]: With dead ends: 1491 [2023-11-29 04:47:25,130 INFO L226 Difference]: Without dead ends: 802 [2023-11-29 04:47:25,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:47:25,133 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 22 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:47:25,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 233 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 5 Unknown, 0 Unchecked, 21.8s Time] [2023-11-29 04:47:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-11-29 04:47:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 537. [2023-11-29 04:47:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 376 states have (on average 1.3191489361702127) internal successors, (496), 376 states have internal predecessors, (496), 150 states have call successors, (150), 10 states have call predecessors, (150), 10 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-29 04:47:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 796 transitions. [2023-11-29 04:47:25,193 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 796 transitions. Word has length 102 [2023-11-29 04:47:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:47:25,194 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 796 transitions. [2023-11-29 04:47:25,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:47:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 796 transitions. [2023-11-29 04:47:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 04:47:25,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:47:25,195 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:47:25,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:47:25,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:47:25,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:47:25,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:47:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1564279812, now seen corresponding path program 1 times [2023-11-29 04:47:25,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:47:25,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637343404] [2023-11-29 04:47:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:25,397 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 [2023-11-29 04:47:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:47:25,398 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:47:25,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:47:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:26,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:47:26,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:47:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-29 04:47:26,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:47:26,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:47:26,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637343404] [2023-11-29 04:47:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637343404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:47:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:47:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:47:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524329980] [2023-11-29 04:47:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:47:26,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:47:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:47:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:47:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:47:26,536 INFO L87 Difference]: Start difference. First operand 537 states and 796 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:47:32,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:47:36,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:47:40,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:47:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:47:41,226 INFO L93 Difference]: Finished difference Result 1518 states and 2250 transitions. [2023-11-29 04:47:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:47:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-29 04:47:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:47:41,232 INFO L225 Difference]: With dead ends: 1518 [2023-11-29 04:47:41,232 INFO L226 Difference]: Without dead ends: 982 [2023-11-29 04:47:41,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:47:41,234 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 69 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:47:41,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 195 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2023-11-29 04:47:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-11-29 04:47:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 972. [2023-11-29 04:47:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 683 states have (on average 1.3118594436310396) internal successors, (896), 683 states have internal predecessors, (896), 270 states have call successors, (270), 18 states have call predecessors, (270), 18 states have return successors, (270), 270 states have call predecessors, (270), 270 states have call successors, (270) [2023-11-29 04:47:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1436 transitions. [2023-11-29 04:47:41,326 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1436 transitions. Word has length 102 [2023-11-29 04:47:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:47:41,326 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1436 transitions. [2023-11-29 04:47:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 04:47:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1436 transitions. [2023-11-29 04:47:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 04:47:41,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:47:41,329 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:47:41,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:47:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:47:41,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:47:41,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:47:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1564339394, now seen corresponding path program 1 times [2023-11-29 04:47:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:47:41,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823268435] [2023-11-29 04:47:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:41,531 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 [2023-11-29 04:47:41,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:47:41,532 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:47:41,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41a84fe-0920-41ac-a467-002f790a6491/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:47:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:42,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:47:42,524 INFO L285 TraceCheckSpWp]: Computing forward predicates...