./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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_19e6efd4-23c8-489d-8952-002a2f489a7c/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 64bf7cfb32d6aedb6c2672e68930c45a098bdd68cdd0e4d07a70ee76b55bcc1e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:12:10,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:12:10,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:12:10,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:12:10,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:12:10,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:12:10,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:12:10,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:12:10,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:12:10,466 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:12:10,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:12:10,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:12:10,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:12:10,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:12:10,469 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:12:10,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:12:10,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:12:10,470 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:12:10,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:12:10,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:12:10,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:12:10,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:12:10,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:12:10,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:12:10,474 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:12:10,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:12:10,475 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:12:10,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:12:10,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:12:10,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:12:10,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:12:10,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:12:10,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:12:10,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:12:10,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:12:10,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:12:10,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:12:10,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:12:10,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:12:10,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:12:10,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:12:10,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:12:10,480 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_19e6efd4-23c8-489d-8952-002a2f489a7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64bf7cfb32d6aedb6c2672e68930c45a098bdd68cdd0e4d07a70ee76b55bcc1e [2023-11-29 04:12:10,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:12:10,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:12:10,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:12:10,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:12:10,705 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:12:10,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-11-29 04:12:13,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:12:13,693 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:12:13,694 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-11-29 04:12:13,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data/6ca388f3e/c2afdc53b67446a1a7f836959a886a95/FLAGa05f912f9 [2023-11-29 04:12:13,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data/6ca388f3e/c2afdc53b67446a1a7f836959a886a95 [2023-11-29 04:12:13,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:12:13,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:12:13,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:12:13,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:12:13,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:12:13,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:12:13" (1/1) ... [2023-11-29 04:12:13,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3891d7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:13, skipping insertion in model container [2023-11-29 04:12:13,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:12:13" (1/1) ... [2023-11-29 04:12:13,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:12:13,945 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_19e6efd4-23c8-489d-8952-002a2f489a7c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i[916,929] [2023-11-29 04:12:14,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:12:14,135 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:12:14,147 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_19e6efd4-23c8-489d-8952-002a2f489a7c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i[916,929] [2023-11-29 04:12:14,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:12:14,242 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:12:14,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14 WrapperNode [2023-11-29 04:12:14,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:12:14,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:12:14,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:12:14,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:12:14,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,369 INFO L138 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 808 [2023-11-29 04:12:14,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:12:14,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:12:14,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:12:14,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:12:14,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,421 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 04:12:14,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:12:14,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:12:14,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:12:14,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:12:14,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (1/1) ... [2023-11-29 04:12:14,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:12:14,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:14,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:12:14,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:12:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:12:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:12:14,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:12:14,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:12:14,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:12:14,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:12:14,675 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:12:14,678 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:12:15,588 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:12:15,641 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:12:15,641 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:12:15,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:12:15 BoogieIcfgContainer [2023-11-29 04:12:15,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:12:15,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:12:15,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:12:15,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:12:15,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:12:13" (1/3) ... [2023-11-29 04:12:15,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d02d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:12:15, skipping insertion in model container [2023-11-29 04:12:15,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:14" (2/3) ... [2023-11-29 04:12:15,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d02d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:12:15, skipping insertion in model container [2023-11-29 04:12:15,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:12:15" (3/3) ... [2023-11-29 04:12:15,650 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-11-29 04:12:15,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:12:15,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:12:15,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:12:15,734 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;@6d6c4091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:12:15,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:12:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 205 states have (on average 1.6390243902439023) internal successors, (336), 206 states have internal predecessors, (336), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 04:12:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-29 04:12:15,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:15,785 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:15,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:15,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash -464282005, now seen corresponding path program 1 times [2023-11-29 04:12:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:15,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498998076] [2023-11-29 04:12:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:16,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498998076] [2023-11-29 04:12:16,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:12:16,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566760598] [2023-11-29 04:12:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:16,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:16,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:16,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:12:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:16,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:12:16,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 20402 trivial. 0 not checked. [2023-11-29 04:12:16,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:16,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566760598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:16,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:12:16,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696219304] [2023-11-29 04:12:16,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:16,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:12:16,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:12:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:12:16,816 INFO L87 Difference]: Start difference. First operand has 310 states, 205 states have (on average 1.6390243902439023) internal successors, (336), 206 states have internal predecessors, (336), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:12:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:16,898 INFO L93 Difference]: Finished difference Result 616 states and 1178 transitions. [2023-11-29 04:12:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:12:16,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 2 states have call successors, (102) Word has length 656 [2023-11-29 04:12:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:16,913 INFO L225 Difference]: With dead ends: 616 [2023-11-29 04:12:16,913 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 04:12:16,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 655 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 04:12:16,924 INFO L413 NwaCegarLoop]: 524 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, 524 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 04:12:16,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 524 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 04:12:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-29 04:12:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 203 states have (on average 1.5911330049261083) internal successors, (323), 203 states have internal predecessors, (323), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 04:12:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 527 transitions. [2023-11-29 04:12:17,018 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 527 transitions. Word has length 656 [2023-11-29 04:12:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:17,019 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 527 transitions. [2023-11-29 04:12:17,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:12:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 527 transitions. [2023-11-29 04:12:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 04:12:17,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:17,040 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:17,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:17,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:17,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:17,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash 19003499, now seen corresponding path program 1 times [2023-11-29 04:12:17,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:17,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919048131] [2023-11-29 04:12:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:17,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:17,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:17,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064599822] [2023-11-29 04:12:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:17,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:17,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:17,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:17,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:12:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:17,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:12:17,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:17,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:17,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:17,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919048131] [2023-11-29 04:12:17,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:17,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064599822] [2023-11-29 04:12:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064599822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:12:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861913938] [2023-11-29 04:12:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:17,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:17,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:17,954 INFO L87 Difference]: Start difference. First operand 307 states and 527 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:18,433 INFO L93 Difference]: Finished difference Result 920 states and 1581 transitions. [2023-11-29 04:12:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:12:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 657 [2023-11-29 04:12:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:18,444 INFO L225 Difference]: With dead ends: 920 [2023-11-29 04:12:18,444 INFO L226 Difference]: Without dead ends: 614 [2023-11-29 04:12:18,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:18,448 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 511 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:18,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 2091 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:12:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-29 04:12:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 334. [2023-11-29 04:12:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 230 states have (on average 1.6304347826086956) internal successors, (375), 230 states have internal predecessors, (375), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 04:12:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 579 transitions. [2023-11-29 04:12:18,514 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 579 transitions. Word has length 657 [2023-11-29 04:12:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 579 transitions. [2023-11-29 04:12:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 579 transitions. [2023-11-29 04:12:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 04:12:18,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:18,527 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:18,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:18,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:18,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1014864162, now seen corresponding path program 1 times [2023-11-29 04:12:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809787381] [2023-11-29 04:12:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:18,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:18,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032614250] [2023-11-29 04:12:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:18,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:18,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:18,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:18,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:12:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:19,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:12:19,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:20,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:20,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:20,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809787381] [2023-11-29 04:12:20,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032614250] [2023-11-29 04:12:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032614250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:20,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:20,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980368066] [2023-11-29 04:12:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:20,075 INFO L87 Difference]: Start difference. First operand 334 states and 579 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:20,443 INFO L93 Difference]: Finished difference Result 1001 states and 1737 transitions. [2023-11-29 04:12:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:12:20,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 658 [2023-11-29 04:12:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:20,452 INFO L225 Difference]: With dead ends: 1001 [2023-11-29 04:12:20,452 INFO L226 Difference]: Without dead ends: 668 [2023-11-29 04:12:20,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:20,455 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 203 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:20,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1344 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:12:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-29 04:12:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 666. [2023-11-29 04:12:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 459 states have (on average 1.6318082788671024) internal successors, (749), 459 states have internal predecessors, (749), 204 states have call successors, (204), 2 states have call predecessors, (204), 2 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-29 04:12:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1157 transitions. [2023-11-29 04:12:20,516 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1157 transitions. Word has length 658 [2023-11-29 04:12:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:20,518 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1157 transitions. [2023-11-29 04:12:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1157 transitions. [2023-11-29 04:12:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 04:12:20,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:20,524 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:20,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:20,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:20,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:20,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash -313264288, now seen corresponding path program 1 times [2023-11-29 04:12:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723946057] [2023-11-29 04:12:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:20,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:20,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:20,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729043583] [2023-11-29 04:12:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:20,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:20,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:20,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:20,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:12:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:21,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:12:21,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:21,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723946057] [2023-11-29 04:12:21,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729043583] [2023-11-29 04:12:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729043583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:21,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286497580] [2023-11-29 04:12:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:21,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:12:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:12:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:21,312 INFO L87 Difference]: Start difference. First operand 666 states and 1157 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:21,426 INFO L93 Difference]: Finished difference Result 1738 states and 3029 transitions. [2023-11-29 04:12:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 658 [2023-11-29 04:12:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:21,437 INFO L225 Difference]: With dead ends: 1738 [2023-11-29 04:12:21,437 INFO L226 Difference]: Without dead ends: 1073 [2023-11-29 04:12:21,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 656 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 04:12:21,441 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 321 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:21,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1149 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:12:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-29 04:12:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1069. [2023-11-29 04:12:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 786 states have (on average 1.6412213740458015) internal successors, (1290), 788 states have internal predecessors, (1290), 278 states have call successors, (278), 4 states have call predecessors, (278), 4 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2023-11-29 04:12:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1846 transitions. [2023-11-29 04:12:21,585 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1846 transitions. Word has length 658 [2023-11-29 04:12:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:21,587 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1846 transitions. [2023-11-29 04:12:21,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1846 transitions. [2023-11-29 04:12:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 04:12:21,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:21,595 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:21,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:12:21,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:21,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:21,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1742856387, now seen corresponding path program 1 times [2023-11-29 04:12:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:21,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385378719] [2023-11-29 04:12:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:21,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477534537] [2023-11-29 04:12:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:21,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:21,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:21,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:21,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:12:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:22,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:12:22,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:22,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:22,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385378719] [2023-11-29 04:12:22,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477534537] [2023-11-29 04:12:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477534537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:22,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:22,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743760337] [2023-11-29 04:12:22,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:12:22,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:12:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:22,398 INFO L87 Difference]: Start difference. First operand 1069 states and 1846 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:22,488 INFO L93 Difference]: Finished difference Result 2167 states and 3730 transitions. [2023-11-29 04:12:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 659 [2023-11-29 04:12:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:22,497 INFO L225 Difference]: With dead ends: 2167 [2023-11-29 04:12:22,497 INFO L226 Difference]: Without dead ends: 1099 [2023-11-29 04:12:22,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 04:12:22,501 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 268 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:22,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1095 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:12:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-11-29 04:12:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 901. [2023-11-29 04:12:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 692 states have (on average 1.6502890173410405) internal successors, (1142), 692 states have internal predecessors, (1142), 204 states have call successors, (204), 4 states have call predecessors, (204), 4 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-29 04:12:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1550 transitions. [2023-11-29 04:12:22,569 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1550 transitions. Word has length 659 [2023-11-29 04:12:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:22,570 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1550 transitions. [2023-11-29 04:12:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1550 transitions. [2023-11-29 04:12:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 04:12:22,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:22,597 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:22,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:12:22,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:22,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:22,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 180371647, now seen corresponding path program 1 times [2023-11-29 04:12:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:22,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181616893] [2023-11-29 04:12:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:22,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596635231] [2023-11-29 04:12:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:22,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:22,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:22,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:22,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:12:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:23,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:12:23,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:12:23,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 117 proven. 186 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:12:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181616893] [2023-11-29 04:12:24,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596635231] [2023-11-29 04:12:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596635231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:24,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:24,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:12:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951146795] [2023-11-29 04:12:24,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:12:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:12:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:12:24,435 INFO L87 Difference]: Start difference. First operand 901 states and 1550 transitions. Second operand has 8 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2023-11-29 04:12:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:25,088 INFO L93 Difference]: Finished difference Result 1813 states and 3109 transitions. [2023-11-29 04:12:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:12:25,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) Word has length 659 [2023-11-29 04:12:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:25,097 INFO L225 Difference]: With dead ends: 1813 [2023-11-29 04:12:25,097 INFO L226 Difference]: Without dead ends: 913 [2023-11-29 04:12:25,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1320 GetRequests, 1310 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:12:25,101 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 740 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:25,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1005 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:12:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2023-11-29 04:12:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 815. [2023-11-29 04:12:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 604 states have (on average 1.6059602649006623) internal successors, (970), 604 states have internal predecessors, (970), 204 states have call successors, (204), 6 states have call predecessors, (204), 6 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-29 04:12:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1378 transitions. [2023-11-29 04:12:25,195 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1378 transitions. Word has length 659 [2023-11-29 04:12:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1378 transitions. [2023-11-29 04:12:25,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2023-11-29 04:12:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1378 transitions. [2023-11-29 04:12:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 04:12:25,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:25,205 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:25,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:12:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:25,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:25,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -62387879, now seen corresponding path program 1 times [2023-11-29 04:12:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022671304] [2023-11-29 04:12:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:25,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203189217] [2023-11-29 04:12:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:25,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:25,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:25,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:12:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:25,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:12:25,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:25,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022671304] [2023-11-29 04:12:25,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203189217] [2023-11-29 04:12:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203189217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:25,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:12:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284541019] [2023-11-29 04:12:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:25,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:25,915 INFO L87 Difference]: Start difference. First operand 815 states and 1378 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:26,335 INFO L93 Difference]: Finished difference Result 2443 states and 4132 transitions. [2023-11-29 04:12:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:12:26,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 660 [2023-11-29 04:12:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:26,348 INFO L225 Difference]: With dead ends: 2443 [2023-11-29 04:12:26,349 INFO L226 Difference]: Without dead ends: 1629 [2023-11-29 04:12:26,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:26,353 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 506 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:26,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1719 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:12:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-11-29 04:12:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 917. [2023-11-29 04:12:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 706 states have (on average 1.6260623229461757) internal successors, (1148), 706 states have internal predecessors, (1148), 204 states have call successors, (204), 6 states have call predecessors, (204), 6 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-29 04:12:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1556 transitions. [2023-11-29 04:12:26,546 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1556 transitions. Word has length 660 [2023-11-29 04:12:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:26,547 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1556 transitions. [2023-11-29 04:12:26,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1556 transitions. [2023-11-29 04:12:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-29 04:12:26,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:26,555 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:26,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:12:26,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:26,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:26,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash -678455496, now seen corresponding path program 1 times [2023-11-29 04:12:26,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687003685] [2023-11-29 04:12:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:26,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:26,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678573223] [2023-11-29 04:12:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:26,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:26,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:26,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:12:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:27,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:12:27,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10403 proven. 150 refuted. 0 times theorem prover too weak. 10051 trivial. 0 not checked. [2023-11-29 04:12:27,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 153 proven. 150 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:12:28,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:28,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687003685] [2023-11-29 04:12:28,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:28,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678573223] [2023-11-29 04:12:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678573223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:28,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:12:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077254274] [2023-11-29 04:12:28,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:12:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:12:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:12:28,130 INFO L87 Difference]: Start difference. First operand 917 states and 1556 transitions. Second operand has 8 states, 8 states have (on average 30.75) internal successors, (246), 8 states have internal predecessors, (246), 3 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 3 states have call predecessors, (153), 3 states have call successors, (153) [2023-11-29 04:12:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:28,739 INFO L93 Difference]: Finished difference Result 1849 states and 3125 transitions. [2023-11-29 04:12:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:12:28,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.75) internal successors, (246), 8 states have internal predecessors, (246), 3 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 3 states have call predecessors, (153), 3 states have call successors, (153) Word has length 661 [2023-11-29 04:12:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:28,748 INFO L225 Difference]: With dead ends: 1849 [2023-11-29 04:12:28,748 INFO L226 Difference]: Without dead ends: 933 [2023-11-29 04:12:28,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1314 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:12:28,752 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 524 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:28,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1024 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:12:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-11-29 04:12:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 925. [2023-11-29 04:12:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 712 states have (on average 1.6151685393258426) internal successors, (1150), 712 states have internal predecessors, (1150), 204 states have call successors, (204), 8 states have call predecessors, (204), 8 states have return successors, (204), 204 states have call predecessors, (204), 204 states have call successors, (204) [2023-11-29 04:12:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1558 transitions. [2023-11-29 04:12:28,860 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1558 transitions. Word has length 661 [2023-11-29 04:12:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:28,861 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1558 transitions. [2023-11-29 04:12:28,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.75) internal successors, (246), 8 states have internal predecessors, (246), 3 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 3 states have call predecessors, (153), 3 states have call successors, (153) [2023-11-29 04:12:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1558 transitions. [2023-11-29 04:12:28,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-29 04:12:28,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:28,870 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:28,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:12:29,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:29,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:29,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1337987018, now seen corresponding path program 1 times [2023-11-29 04:12:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979714300] [2023-11-29 04:12:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:29,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389161006] [2023-11-29 04:12:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:29,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:29,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:29,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:12:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:29,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:12:29,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:30,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:30,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:30,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979714300] [2023-11-29 04:12:30,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:30,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389161006] [2023-11-29 04:12:30,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389161006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:30,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265104972] [2023-11-29 04:12:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:30,509 INFO L87 Difference]: Start difference. First operand 925 states and 1558 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:32,633 INFO L93 Difference]: Finished difference Result 4628 states and 7644 transitions. [2023-11-29 04:12:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:12:32,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 661 [2023-11-29 04:12:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:32,656 INFO L225 Difference]: With dead ends: 4628 [2023-11-29 04:12:32,656 INFO L226 Difference]: Without dead ends: 3704 [2023-11-29 04:12:32,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:12:32,661 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1830 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1265 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:32,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 2723 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1265 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:12:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2023-11-29 04:12:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 2479. [2023-11-29 04:12:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1916 states have (on average 1.6127348643006263) internal successors, (3090), 1918 states have internal predecessors, (3090), 538 states have call successors, (538), 24 states have call predecessors, (538), 24 states have return successors, (538), 536 states have call predecessors, (538), 538 states have call successors, (538) [2023-11-29 04:12:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4166 transitions. [2023-11-29 04:12:32,971 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4166 transitions. Word has length 661 [2023-11-29 04:12:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:32,972 INFO L495 AbstractCegarLoop]: Abstraction has 2479 states and 4166 transitions. [2023-11-29 04:12:32,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4166 transitions. [2023-11-29 04:12:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-29 04:12:32,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:32,979 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:32,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:12:33,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:33,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:33,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:33,180 INFO L85 PathProgramCache]: Analyzing trace with hash -528640392, now seen corresponding path program 1 times [2023-11-29 04:12:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734316901] [2023-11-29 04:12:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:33,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:33,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742809243] [2023-11-29 04:12:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:33,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:33,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:33,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:12:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:33,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:12:33,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:34,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734316901] [2023-11-29 04:12:34,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742809243] [2023-11-29 04:12:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742809243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:34,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60072238] [2023-11-29 04:12:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:34,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:34,366 INFO L87 Difference]: Start difference. First operand 2479 states and 4166 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:35,168 INFO L93 Difference]: Finished difference Result 6744 states and 11340 transitions. [2023-11-29 04:12:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:12:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 661 [2023-11-29 04:12:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:35,198 INFO L225 Difference]: With dead ends: 6744 [2023-11-29 04:12:35,198 INFO L226 Difference]: Without dead ends: 4266 [2023-11-29 04:12:35,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:12:35,206 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1376 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:35,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2131 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:12:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2023-11-29 04:12:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3882. [2023-11-29 04:12:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 3213 states have (on average 1.6402116402116402) internal successors, (5270), 3215 states have internal predecessors, (5270), 640 states have call successors, (640), 28 states have call predecessors, (640), 28 states have return successors, (640), 638 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-29 04:12:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 6550 transitions. [2023-11-29 04:12:35,633 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 6550 transitions. Word has length 661 [2023-11-29 04:12:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:35,634 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 6550 transitions. [2023-11-29 04:12:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 6550 transitions. [2023-11-29 04:12:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 04:12:35,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:35,644 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:35,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:12:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:12:35,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -601460325, now seen corresponding path program 1 times [2023-11-29 04:12:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103778340] [2023-11-29 04:12:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:35,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:35,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39129116] [2023-11-29 04:12:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:35,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:35,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:35,906 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:35,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:12:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:36,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:12:36,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 8597 proven. 87 refuted. 0 times theorem prover too weak. 11920 trivial. 0 not checked. [2023-11-29 04:12:36,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 216 proven. 87 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:12:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103778340] [2023-11-29 04:12:36,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39129116] [2023-11-29 04:12:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39129116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:36,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:36,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:12:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426703351] [2023-11-29 04:12:36,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:36,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:36,885 INFO L87 Difference]: Start difference. First operand 3882 states and 6550 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 04:12:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:37,599 INFO L93 Difference]: Finished difference Result 6468 states and 10846 transitions. [2023-11-29 04:12:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:12:37,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 662 [2023-11-29 04:12:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:37,618 INFO L225 Difference]: With dead ends: 6468 [2023-11-29 04:12:37,618 INFO L226 Difference]: Without dead ends: 3556 [2023-11-29 04:12:37,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1316 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:12:37,625 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 832 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:37,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1031 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:12:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2023-11-29 04:12:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3518. [2023-11-29 04:12:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2844 states have (on average 1.6241209563994374) internal successors, (4619), 2846 states have internal predecessors, (4619), 640 states have call successors, (640), 33 states have call predecessors, (640), 33 states have return successors, (640), 638 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-29 04:12:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 5899 transitions. [2023-11-29 04:12:37,947 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 5899 transitions. Word has length 662 [2023-11-29 04:12:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:37,948 INFO L495 AbstractCegarLoop]: Abstraction has 3518 states and 5899 transitions. [2023-11-29 04:12:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 04:12:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 5899 transitions. [2023-11-29 04:12:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 04:12:37,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:37,957 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:37,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:12:38,158 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:38,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash -718992646, now seen corresponding path program 1 times [2023-11-29 04:12:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928064018] [2023-11-29 04:12:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:38,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:38,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908258744] [2023-11-29 04:12:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:38,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:38,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:38,219 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:12:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:38,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:12:38,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9213 proven. 99 refuted. 0 times theorem prover too weak. 11292 trivial. 0 not checked. [2023-11-29 04:12:39,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 204 proven. 99 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:12:39,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928064018] [2023-11-29 04:12:39,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908258744] [2023-11-29 04:12:39,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908258744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:39,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:39,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:12:39,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434247159] [2023-11-29 04:12:39,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:39,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:39,362 INFO L87 Difference]: Start difference. First operand 3518 states and 5899 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-11-29 04:12:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:39,982 INFO L93 Difference]: Finished difference Result 6140 states and 10201 transitions. [2023-11-29 04:12:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:12:39,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) Word has length 663 [2023-11-29 04:12:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:40,018 INFO L225 Difference]: With dead ends: 6140 [2023-11-29 04:12:40,018 INFO L226 Difference]: Without dead ends: 3586 [2023-11-29 04:12:40,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1318 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:12:40,023 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 749 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:40,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1034 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:12:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2023-11-29 04:12:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3538. [2023-11-29 04:12:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 2859 states have (on average 1.6159496327387197) internal successors, (4620), 2861 states have internal predecessors, (4620), 640 states have call successors, (640), 38 states have call predecessors, (640), 38 states have return successors, (640), 638 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-29 04:12:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5900 transitions. [2023-11-29 04:12:40,248 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5900 transitions. Word has length 663 [2023-11-29 04:12:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:40,248 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5900 transitions. [2023-11-29 04:12:40,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-11-29 04:12:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5900 transitions. [2023-11-29 04:12:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 04:12:40,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:40,255 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:40,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:12:40,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:12:40,455 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:40,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash -853006152, now seen corresponding path program 1 times [2023-11-29 04:12:40,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:40,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830364539] [2023-11-29 04:12:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:40,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:40,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808155720] [2023-11-29 04:12:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:40,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:40,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:40,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:12:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:40,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:12:40,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:12:41,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830364539] [2023-11-29 04:12:41,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808155720] [2023-11-29 04:12:41,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808155720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:41,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:41,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:41,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983899109] [2023-11-29 04:12:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:41,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:41,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:41,651 INFO L87 Difference]: Start difference. First operand 3538 states and 5900 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:43,493 INFO L93 Difference]: Finished difference Result 8514 states and 14000 transitions. [2023-11-29 04:12:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:12:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 663 [2023-11-29 04:12:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:43,512 INFO L225 Difference]: With dead ends: 8514 [2023-11-29 04:12:43,512 INFO L226 Difference]: Without dead ends: 5992 [2023-11-29 04:12:43,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:12:43,518 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 1969 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 1426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1426 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:43,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 2571 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1426 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:12:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2023-11-29 04:12:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 4084. [2023-11-29 04:12:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 3248 states have (on average 1.5926724137931034) internal successors, (5173), 3252 states have internal predecessors, (5173), 782 states have call successors, (782), 53 states have call predecessors, (782), 53 states have return successors, (782), 778 states have call predecessors, (782), 782 states have call successors, (782) [2023-11-29 04:12:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 6737 transitions. [2023-11-29 04:12:44,011 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 6737 transitions. Word has length 663 [2023-11-29 04:12:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:44,012 INFO L495 AbstractCegarLoop]: Abstraction has 4084 states and 6737 transitions. [2023-11-29 04:12:44,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:12:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 6737 transitions. [2023-11-29 04:12:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 04:12:44,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:44,020 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:44,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:12:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:12:44,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:44,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash 426857526, now seen corresponding path program 1 times [2023-11-29 04:12:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800231700] [2023-11-29 04:12:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:44,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202521495] [2023-11-29 04:12:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:44,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:44,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:44,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:44,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:12:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:44,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:12:44,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 897 proven. 297 refuted. 0 times theorem prover too weak. 19410 trivial. 0 not checked. [2023-11-29 04:12:47,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 6 proven. 297 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:12:49,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:49,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800231700] [2023-11-29 04:12:49,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:49,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202521495] [2023-11-29 04:12:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202521495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:49,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:49,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 04:12:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753145936] [2023-11-29 04:12:49,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:12:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:12:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:12:49,239 INFO L87 Difference]: Start difference. First operand 4084 states and 6737 transitions. Second operand has 14 states, 14 states have (on average 22.5) internal successors, (315), 14 states have internal predecessors, (315), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 04:12:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:52,458 INFO L93 Difference]: Finished difference Result 12446 states and 20172 transitions. [2023-11-29 04:12:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:12:52,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.5) internal successors, (315), 14 states have internal predecessors, (315), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) Word has length 663 [2023-11-29 04:12:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:52,481 INFO L225 Difference]: With dead ends: 12446 [2023-11-29 04:12:52,481 INFO L226 Difference]: Without dead ends: 9508 [2023-11-29 04:12:52,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:12:52,489 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 2522 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:52,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2621 Valid, 2903 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:12:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9508 states. [2023-11-29 04:12:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9508 to 9154. [2023-11-29 04:12:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9154 states, 7055 states have (on average 1.5554925584691708) internal successors, (10974), 7069 states have internal predecessors, (10974), 1942 states have call successors, (1942), 156 states have call predecessors, (1942), 156 states have return successors, (1942), 1928 states have call predecessors, (1942), 1942 states have call successors, (1942) [2023-11-29 04:12:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 14858 transitions. [2023-11-29 04:12:53,390 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 14858 transitions. Word has length 663 [2023-11-29 04:12:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:53,391 INFO L495 AbstractCegarLoop]: Abstraction has 9154 states and 14858 transitions. [2023-11-29 04:12:53,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.5) internal successors, (315), 14 states have internal predecessors, (315), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 04:12:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 14858 transitions. [2023-11-29 04:12:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-11-29 04:12:53,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:53,397 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:53,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:12:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:12:53,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:12:53,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash -366742632, now seen corresponding path program 1 times [2023-11-29 04:12:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652825602] [2023-11-29 04:12:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:53,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:12:53,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098699028] [2023-11-29 04:12:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:53,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:53,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:53,670 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:53,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:12:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:54,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:12:54,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10163 proven. 174 refuted. 0 times theorem prover too weak. 10267 trivial. 0 not checked. [2023-11-29 04:12:55,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 129 proven. 174 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:12:58,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652825602] [2023-11-29 04:12:58,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:12:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098699028] [2023-11-29 04:12:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098699028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:58,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:58,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 04:12:58,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855323367] [2023-11-29 04:12:58,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:58,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:12:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:12:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:12:58,428 INFO L87 Difference]: Start difference. First operand 9154 states and 14858 transitions. Second operand has 27 states, 27 states have (on average 11.481481481481481) internal successors, (310), 27 states have internal predecessors, (310), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 04:13:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:25,922 INFO L93 Difference]: Finished difference Result 72398 states and 117433 transitions. [2023-11-29 04:13:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-29 04:13:25,922 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.481481481481481) internal successors, (310), 27 states have internal predecessors, (310), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) Word has length 664 [2023-11-29 04:13:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:13:26,030 INFO L225 Difference]: With dead ends: 72398 [2023-11-29 04:13:26,030 INFO L226 Difference]: Without dead ends: 63464 [2023-11-29 04:13:26,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1439 GetRequests, 1321 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5721 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3611, Invalid=10669, Unknown=0, NotChecked=0, Total=14280 [2023-11-29 04:13:26,060 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 13720 mSDsluCounter, 15187 mSDsCounter, 0 mSdLazyCounter, 14131 mSolverCounterSat, 3799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13720 SdHoareTripleChecker+Valid, 15915 SdHoareTripleChecker+Invalid, 17930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3799 IncrementalHoareTripleChecker+Valid, 14131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:13:26,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13720 Valid, 15915 Invalid, 17930 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3799 Valid, 14131 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-11-29 04:13:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63464 states. [2023-11-29 04:13:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63464 to 25399. [2023-11-29 04:13:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25399 states, 19975 states have (on average 1.5626533166458072) internal successors, (31214), 20041 states have internal predecessors, (31214), 4959 states have call successors, (4959), 464 states have call predecessors, (4959), 464 states have return successors, (4959), 4893 states have call predecessors, (4959), 4959 states have call successors, (4959) [2023-11-29 04:13:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25399 states to 25399 states and 41132 transitions. [2023-11-29 04:13:29,919 INFO L78 Accepts]: Start accepts. Automaton has 25399 states and 41132 transitions. Word has length 664 [2023-11-29 04:13:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:13:29,919 INFO L495 AbstractCegarLoop]: Abstraction has 25399 states and 41132 transitions. [2023-11-29 04:13:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.481481481481481) internal successors, (310), 27 states have internal predecessors, (310), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 04:13:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 25399 states and 41132 transitions. [2023-11-29 04:13:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-11-29 04:13:29,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:13:29,932 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:29,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:13:30,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:13:30,133 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:13:30,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:30,133 INFO L85 PathProgramCache]: Analyzing trace with hash 509276374, now seen corresponding path program 1 times [2023-11-29 04:13:30,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:30,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099026590] [2023-11-29 04:13:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:30,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:30,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:13:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493082320] [2023-11-29 04:13:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:30,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:30,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:30,194 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:30,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:13:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:30,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:13:30,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:13:31,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:13:31,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:31,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099026590] [2023-11-29 04:13:31,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:13:31,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493082320] [2023-11-29 04:13:31,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493082320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:31,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:13:31,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857721533] [2023-11-29 04:13:31,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:31,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:13:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:13:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:13:31,222 INFO L87 Difference]: Start difference. First operand 25399 states and 41132 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:13:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:43,615 INFO L93 Difference]: Finished difference Result 82411 states and 133983 transitions. [2023-11-29 04:13:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:13:43,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 664 [2023-11-29 04:13:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:13:43,718 INFO L225 Difference]: With dead ends: 82411 [2023-11-29 04:13:43,718 INFO L226 Difference]: Without dead ends: 65553 [2023-11-29 04:13:43,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:13:43,747 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 1333 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:13:43,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 3127 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 04:13:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65553 states. [2023-11-29 04:13:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65553 to 26950. [2023-11-29 04:13:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26950 states, 22288 states have (on average 1.621276022972003) internal successors, (36135), 22335 states have internal predecessors, (36135), 4222 states have call successors, (4222), 439 states have call predecessors, (4222), 439 states have return successors, (4222), 4175 states have call predecessors, (4222), 4222 states have call successors, (4222) [2023-11-29 04:13:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26950 states to 26950 states and 44579 transitions. [2023-11-29 04:13:47,743 INFO L78 Accepts]: Start accepts. Automaton has 26950 states and 44579 transitions. Word has length 664 [2023-11-29 04:13:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:13:47,744 INFO L495 AbstractCegarLoop]: Abstraction has 26950 states and 44579 transitions. [2023-11-29 04:13:47,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:13:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 26950 states and 44579 transitions. [2023-11-29 04:13:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-11-29 04:13:47,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:13:47,759 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:47,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:47,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:13:47,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:13:47,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1137476198, now seen corresponding path program 1 times [2023-11-29 04:13:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:47,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667549708] [2023-11-29 04:13:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:47,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:48,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:13:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759890007] [2023-11-29 04:13:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:48,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:48,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:48,018 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:48,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:13:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:48,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:13:48,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 7751 proven. 228 refuted. 0 times theorem prover too weak. 12625 trivial. 0 not checked. [2023-11-29 04:14:10,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667549708] [2023-11-29 04:14:20,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759890007] [2023-11-29 04:14:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759890007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:20,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:14:20,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 04:14:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059143448] [2023-11-29 04:14:20,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:20,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:14:20,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:14:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=156, Unknown=5, NotChecked=0, Total=210 [2023-11-29 04:14:20,233 INFO L87 Difference]: Start difference. First operand 26950 states and 44579 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:14:24,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:14:24,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 04:14:24,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=58, Invalid=177, Unknown=5, NotChecked=0, Total=240 [2023-11-29 04:14:24,597 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:24,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 04:14:24,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:14:24,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:14:24,798 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-11-29 04:14:24,801 INFO L158 Benchmark]: Toolchain (without parser) took 131071.94ms. Allocated memory was 169.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 590.0MB. Max. memory is 16.1GB. [2023-11-29 04:14:24,801 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:14:24,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.36ms. Allocated memory is still 169.9MB. Free memory was 131.7MB in the beginning and 99.9MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-29 04:14:24,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.89ms. Allocated memory is still 169.9MB. Free memory was 99.9MB in the beginning and 128.0MB in the end (delta: -28.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-11-29 04:14:24,802 INFO L158 Benchmark]: Boogie Preprocessor took 104.64ms. Allocated memory is still 169.9MB. Free memory was 128.0MB in the beginning and 112.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:14:24,802 INFO L158 Benchmark]: RCFGBuilder took 1166.22ms. Allocated memory is still 169.9MB. Free memory was 112.3MB in the beginning and 85.5MB in the end (delta: 26.8MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-29 04:14:24,803 INFO L158 Benchmark]: TraceAbstraction took 129156.35ms. Allocated memory was 169.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 84.4MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 540.0MB. Max. memory is 16.1GB. [2023-11-29 04:14:24,804 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 134.2MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.36ms. Allocated memory is still 169.9MB. Free memory was 131.7MB in the beginning and 99.9MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.89ms. Allocated memory is still 169.9MB. Free memory was 99.9MB in the beginning and 128.0MB in the end (delta: -28.1MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.64ms. Allocated memory is still 169.9MB. Free memory was 128.0MB in the beginning and 112.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1166.22ms. Allocated memory is still 169.9MB. Free memory was 112.3MB in the beginning and 85.5MB in the end (delta: 26.8MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 129156.35ms. Allocated memory was 169.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 84.4MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 540.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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_19e6efd4-23c8-489d-8952-002a2f489a7c/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 64bf7cfb32d6aedb6c2672e68930c45a098bdd68cdd0e4d07a70ee76b55bcc1e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:14:26,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:14:26,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 04:14:26,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:14:26,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:14:26,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:14:26,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:14:26,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:14:26,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:14:26,671 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:14:26,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:14:26,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:14:26,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:14:26,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:14:26,675 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:14:26,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:14:26,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:14:26,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:14:26,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:14:26,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:14:26,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:14:26,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:14:26,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:14:26,682 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:14:26,682 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:14:26,683 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:14:26,683 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:14:26,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:14:26,684 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:14:26,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:14:26,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:14:26,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:14:26,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:14:26,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:14:26,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:14:26,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:14:26,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:14:26,687 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:14:26,687 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:14:26,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:14:26,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:14:26,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:14:26,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:14:26,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:14:26,688 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:14:26,689 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_19e6efd4-23c8-489d-8952-002a2f489a7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64bf7cfb32d6aedb6c2672e68930c45a098bdd68cdd0e4d07a70ee76b55bcc1e [2023-11-29 04:14:26,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:14:27,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:14:27,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:14:27,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:14:27,004 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:14:27,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-11-29 04:14:29,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:14:30,017 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:14:30,018 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-11-29 04:14:30,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data/bdc8ecf9c/7cc0b3188ed64462a058af77b4fdab8f/FLAGa89b95280 [2023-11-29 04:14:30,047 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/data/bdc8ecf9c/7cc0b3188ed64462a058af77b4fdab8f [2023-11-29 04:14:30,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:14:30,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:14:30,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:14:30,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:14:30,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:14:30,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0b533e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30, skipping insertion in model container [2023-11-29 04:14:30,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:14:30,276 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_19e6efd4-23c8-489d-8952-002a2f489a7c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i[916,929] [2023-11-29 04:14:30,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:14:30,460 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:14:30,472 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_19e6efd4-23c8-489d-8952-002a2f489a7c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i[916,929] [2023-11-29 04:14:30,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:14:30,608 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:14:30,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30 WrapperNode [2023-11-29 04:14:30,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:14:30,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:14:30,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:14:30,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:14:30,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,683 INFO L138 Inliner]: procedures = 27, calls = 115, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 679 [2023-11-29 04:14:30,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:14:30,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:14:30,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:14:30,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:14:30,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,726 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 04:14:30,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:14:30,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:14:30,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:14:30,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:14:30,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (1/1) ... [2023-11-29 04:14:30,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:14:30,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:30,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:14:30,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:14:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:14:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:14:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:14:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:14:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:14:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:14:31,004 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:14:31,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:14:42,583 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:14:42,635 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:14:42,635 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:14:42,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:14:42 BoogieIcfgContainer [2023-11-29 04:14:42,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:14:42,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:14:42,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:14:42,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:14:42,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:14:30" (1/3) ... [2023-11-29 04:14:42,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317c6269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:14:42, skipping insertion in model container [2023-11-29 04:14:42,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:14:30" (2/3) ... [2023-11-29 04:14:42,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317c6269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:14:42, skipping insertion in model container [2023-11-29 04:14:42,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:14:42" (3/3) ... [2023-11-29 04:14:42,643 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-11-29 04:14:42,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:14:42,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:14:42,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:14:42,712 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;@11e774ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:14:42,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:14:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 180 states have (on average 1.6) internal successors, (288), 181 states have internal predecessors, (288), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 04:14:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2023-11-29 04:14:42,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:42,762 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:42,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:42,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1263114680, now seen corresponding path program 1 times [2023-11-29 04:14:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633735774] [2023-11-29 04:14:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:42,784 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 04:14:42,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:42,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:42,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:44,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:14:44,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10322 proven. 0 refuted. 0 times theorem prover too weak. 10282 trivial. 0 not checked. [2023-11-29 04:14:44,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:44,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:14:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633735774] [2023-11-29 04:14:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633735774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:44,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:14:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381360184] [2023-11-29 04:14:44,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:44,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:14:44,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:14:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:14:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:14:44,273 INFO L87 Difference]: Start difference. First operand has 285 states, 180 states have (on average 1.6) internal successors, (288), 181 states have internal predecessors, (288), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:14:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:44,461 INFO L93 Difference]: Finished difference Result 566 states and 1082 transitions. [2023-11-29 04:14:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:14:44,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 647 [2023-11-29 04:14:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:44,482 INFO L225 Difference]: With dead ends: 566 [2023-11-29 04:14:44,483 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 04:14:44,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 646 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 04:14:44,492 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:44,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:14:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 04:14:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-11-29 04:14:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 04:14:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 481 transitions. [2023-11-29 04:14:44,588 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 481 transitions. Word has length 647 [2023-11-29 04:14:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:44,589 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 481 transitions. [2023-11-29 04:14:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:14:44,590 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 481 transitions. [2023-11-29 04:14:44,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-11-29 04:14:44,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:44,620 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:44,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:44,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:44,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:44,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1128107433, now seen corresponding path program 1 times [2023-11-29 04:14:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773445107] [2023-11-29 04:14:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:44,825 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 04:14:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:44,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:44,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:46,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:14:46,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:14:46,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:46,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:14:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773445107] [2023-11-29 04:14:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773445107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:46,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:14:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212447322] [2023-11-29 04:14:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:14:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:14:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:14:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:14:46,323 INFO L87 Difference]: Start difference. First operand 282 states and 481 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:14:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:47,165 INFO L93 Difference]: Finished difference Result 725 states and 1241 transitions. [2023-11-29 04:14:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:14:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 648 [2023-11-29 04:14:47,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:47,174 INFO L225 Difference]: With dead ends: 725 [2023-11-29 04:14:47,174 INFO L226 Difference]: Without dead ends: 444 [2023-11-29 04:14:47,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 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 04:14:47,177 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 240 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:47,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 939 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:14:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-29 04:14:47,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2023-11-29 04:14:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 299 states have (on average 1.585284280936455) internal successors, (474), 300 states have internal predecessors, (474), 139 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (139), 138 states have call predecessors, (139), 139 states have call successors, (139) [2023-11-29 04:14:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 752 transitions. [2023-11-29 04:14:47,254 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 752 transitions. Word has length 648 [2023-11-29 04:14:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:47,258 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 752 transitions. [2023-11-29 04:14:47,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:14:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 752 transitions. [2023-11-29 04:14:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-11-29 04:14:47,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:47,267 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:47,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:47,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:47,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:47,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1262120939, now seen corresponding path program 1 times [2023-11-29 04:14:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123612610] [2023-11-29 04:14:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:47,470 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 04:14:47,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:47,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:47,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:48,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:14:48,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:14:48,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:48,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:14:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123612610] [2023-11-29 04:14:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123612610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:14:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584709200] [2023-11-29 04:14:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:48,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:14:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:14:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:14:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:14:48,990 INFO L87 Difference]: Start difference. First operand 441 states and 752 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:14:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:50,031 INFO L93 Difference]: Finished difference Result 895 states and 1518 transitions. [2023-11-29 04:14:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:14:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 648 [2023-11-29 04:14:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:50,038 INFO L225 Difference]: With dead ends: 895 [2023-11-29 04:14:50,039 INFO L226 Difference]: Without dead ends: 455 [2023-11-29 04:14:50,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 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 04:14:50,043 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 246 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:50,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1004 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:14:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-11-29 04:14:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 362. [2023-11-29 04:14:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 257 states have (on average 1.575875486381323) internal successors, (405), 257 states have internal predecessors, (405), 102 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 04:14:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 609 transitions. [2023-11-29 04:14:50,076 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 609 transitions. Word has length 648 [2023-11-29 04:14:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:50,078 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 609 transitions. [2023-11-29 04:14:50,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:14:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 609 transitions. [2023-11-29 04:14:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-11-29 04:14:50,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:50,084 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:50,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:50,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:50,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:50,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 156247719, now seen corresponding path program 1 times [2023-11-29 04:14:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711170343] [2023-11-29 04:14:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:50,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:14:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:50,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:50,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:51,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:14:51,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:14:51,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:14:51,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:14:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711170343] [2023-11-29 04:14:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711170343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:51,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:14:51,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602987993] [2023-11-29 04:14:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:51,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:14:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:14:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:14:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:14:51,935 INFO L87 Difference]: Start difference. First operand 362 states and 609 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:14:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:56,674 INFO L93 Difference]: Finished difference Result 1382 states and 2317 transitions. [2023-11-29 04:14:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:14:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 649 [2023-11-29 04:14:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:56,685 INFO L225 Difference]: With dead ends: 1382 [2023-11-29 04:14:56,685 INFO L226 Difference]: Without dead ends: 1021 [2023-11-29 04:14:56,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:14:56,687 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1546 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1757 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 04:14:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-11-29 04:14:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 753. [2023-11-29 04:14:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 498 states have (on average 1.5301204819277108) internal successors, (762), 500 states have internal predecessors, (762), 247 states have call successors, (247), 7 states have call predecessors, (247), 7 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-11-29 04:14:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1256 transitions. [2023-11-29 04:14:56,786 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1256 transitions. Word has length 649 [2023-11-29 04:14:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1256 transitions. [2023-11-29 04:14:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:14:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1256 transitions. [2023-11-29 04:14:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-11-29 04:14:56,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:56,796 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:56,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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)] Forceful destruction successful, exit code 0 [2023-11-29 04:14:56,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:56,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:56,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:56,997 INFO L85 PathProgramCache]: Analyzing trace with hash -724601617, now seen corresponding path program 1 times [2023-11-29 04:14:56,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:56,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349027547] [2023-11-29 04:14:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:56,998 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 04:14:56,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:56,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:57,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:14:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:58,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:14:58,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 8597 proven. 87 refuted. 0 times theorem prover too weak. 11920 trivial. 0 not checked. [2023-11-29 04:14:59,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 216 proven. 87 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 04:14:59,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:14:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349027547] [2023-11-29 04:14:59,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349027547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:59,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:14:59,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:14:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131286017] [2023-11-29 04:14:59,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:59,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:14:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:14:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:14:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:14:59,742 INFO L87 Difference]: Start difference. First operand 753 states and 1256 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 04:15:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:01,258 INFO L93 Difference]: Finished difference Result 1459 states and 2421 transitions. [2023-11-29 04:15:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:15:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 649 [2023-11-29 04:15:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:01,276 INFO L225 Difference]: With dead ends: 1459 [2023-11-29 04:15:01,277 INFO L226 Difference]: Without dead ends: 779 [2023-11-29 04:15:01,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:15:01,280 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 288 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:01,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 900 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:15:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-11-29 04:15:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 761. [2023-11-29 04:15:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 504 states have (on average 1.5119047619047619) internal successors, (762), 506 states have internal predecessors, (762), 247 states have call successors, (247), 9 states have call predecessors, (247), 9 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-11-29 04:15:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1256 transitions. [2023-11-29 04:15:01,379 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1256 transitions. Word has length 649 [2023-11-29 04:15:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1256 transitions. [2023-11-29 04:15:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 04:15:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1256 transitions. [2023-11-29 04:15:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2023-11-29 04:15:01,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:01,389 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:01,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:01,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:01,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:01,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash -958980496, now seen corresponding path program 1 times [2023-11-29 04:15:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192627630] [2023-11-29 04:15:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:01,592 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 04:15:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:01,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:01,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:02,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:02,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:15:02,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:02,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192627630] [2023-11-29 04:15:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192627630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:02,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:15:02,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:15:02,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209700307] [2023-11-29 04:15:02,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:02,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:15:02,904 INFO L87 Difference]: Start difference. First operand 761 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:03,226 INFO L93 Difference]: Finished difference Result 2137 states and 3538 transitions. [2023-11-29 04:15:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:03,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 650 [2023-11-29 04:15:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:03,236 INFO L225 Difference]: With dead ends: 2137 [2023-11-29 04:15:03,236 INFO L226 Difference]: Without dead ends: 1449 [2023-11-29 04:15:03,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 648 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 04:15:03,239 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 461 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:03,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1368 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:15:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-29 04:15:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 802. [2023-11-29 04:15:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 545 states have (on average 1.5321100917431192) internal successors, (835), 547 states have internal predecessors, (835), 247 states have call successors, (247), 9 states have call predecessors, (247), 9 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-11-29 04:15:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1329 transitions. [2023-11-29 04:15:03,339 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1329 transitions. Word has length 650 [2023-11-29 04:15:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:03,340 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1329 transitions. [2023-11-29 04:15:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1329 transitions. [2023-11-29 04:15:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-11-29 04:15:03,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:03,346 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:03,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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)] Forceful destruction successful, exit code 0 [2023-11-29 04:15:03,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:03,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:03,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash -430014752, now seen corresponding path program 1 times [2023-11-29 04:15:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702159562] [2023-11-29 04:15:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:03,548 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 04:15:03,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:03,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:03,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:04,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:15:04,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:15:05,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:06,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702159562] [2023-11-29 04:15:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702159562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [641934813] [2023-11-29 04:15:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:06,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:15:06,106 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:15:06,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-29 04:15:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:08,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:08,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:15:08,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [641934813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:08,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:15:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260693381] [2023-11-29 04:15:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:08,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:08,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:08,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:08,195 INFO L87 Difference]: Start difference. First operand 802 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:08,407 INFO L93 Difference]: Finished difference Result 2205 states and 3654 transitions. [2023-11-29 04:15:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:08,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-11-29 04:15:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:08,427 INFO L225 Difference]: With dead ends: 2205 [2023-11-29 04:15:08,427 INFO L226 Difference]: Without dead ends: 1476 [2023-11-29 04:15:08,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:08,430 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 470 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:08,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1027 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:15:08,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-11-29 04:15:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1237. [2023-11-29 04:15:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 874 states have (on average 1.55720823798627) internal successors, (1361), 876 states have internal predecessors, (1361), 349 states have call successors, (349), 13 states have call predecessors, (349), 13 states have return successors, (349), 347 states have call predecessors, (349), 349 states have call successors, (349) [2023-11-29 04:15:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2059 transitions. [2023-11-29 04:15:08,604 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2059 transitions. Word has length 651 [2023-11-29 04:15:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:08,605 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2059 transitions. [2023-11-29 04:15:08,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2059 transitions. [2023-11-29 04:15:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-11-29 04:15:08,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:08,613 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:08,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-11-29 04:15:08,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:09,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:09,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:09,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash -852716578, now seen corresponding path program 1 times [2023-11-29 04:15:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316316360] [2023-11-29 04:15:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:09,015 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 04:15:09,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:09,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:09,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:10,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:15:10,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:15:11,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:11,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316316360] [2023-11-29 04:15:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316316360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2103871666] [2023-11-29 04:15:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:11,629 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:15:11,630 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:15:11,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-29 04:15:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:13,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:15:13,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:13,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2103871666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:13,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:15:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160040877] [2023-11-29 04:15:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:13,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:13,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:13,689 INFO L87 Difference]: Start difference. First operand 1237 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:14,297 INFO L93 Difference]: Finished difference Result 3104 states and 5184 transitions. [2023-11-29 04:15:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-11-29 04:15:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:14,313 INFO L225 Difference]: With dead ends: 3104 [2023-11-29 04:15:14,313 INFO L226 Difference]: Without dead ends: 1940 [2023-11-29 04:15:14,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:14,318 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 255 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:14,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1119 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:15:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2023-11-29 04:15:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1935. [2023-11-29 04:15:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1398 states have (on average 1.5701001430615165) internal successors, (2195), 1403 states have internal predecessors, (2195), 514 states have call successors, (514), 22 states have call predecessors, (514), 22 states have return successors, (514), 509 states have call predecessors, (514), 514 states have call successors, (514) [2023-11-29 04:15:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3223 transitions. [2023-11-29 04:15:14,582 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3223 transitions. Word has length 651 [2023-11-29 04:15:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:14,583 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 3223 transitions. [2023-11-29 04:15:14,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3223 transitions. [2023-11-29 04:15:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-11-29 04:15:14,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:14,592 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:14,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-11-29 04:15:14,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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)] Ended with exit code 0 [2023-11-29 04:15:14,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:14,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:14,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1439522592, now seen corresponding path program 1 times [2023-11-29 04:15:14,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:14,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428146315] [2023-11-29 04:15:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:14,995 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 04:15:14,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:14,996 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:14,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (12)] Waiting until timeout for monitored process [2023-11-29 04:15:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:16,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:15:16,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:15:17,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:17,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:17,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428146315] [2023-11-29 04:15:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428146315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2142736737] [2023-11-29 04:15:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:17,535 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:17,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:15:17,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:15:17,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-29 04:15:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:19,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:15:19,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:15:21,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2142736737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:21,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:21,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 04:15:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44247748] [2023-11-29 04:15:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:15:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:15:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:15:21,166 INFO L87 Difference]: Start difference. First operand 1935 states and 3223 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:21,964 INFO L93 Difference]: Finished difference Result 4883 states and 8231 transitions. [2023-11-29 04:15:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:15:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-11-29 04:15:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:21,987 INFO L225 Difference]: With dead ends: 4883 [2023-11-29 04:15:21,987 INFO L226 Difference]: Without dead ends: 3021 [2023-11-29 04:15:21,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1376 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:15:21,992 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 411 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:21,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1424 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:15:21,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-11-29 04:15:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2137. [2023-11-29 04:15:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1703 states have (on average 1.6288901937756899) internal successors, (2774), 1705 states have internal predecessors, (2774), 416 states have call successors, (416), 17 states have call predecessors, (416), 17 states have return successors, (416), 414 states have call predecessors, (416), 416 states have call successors, (416) [2023-11-29 04:15:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3606 transitions. [2023-11-29 04:15:22,176 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3606 transitions. Word has length 651 [2023-11-29 04:15:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:22,177 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3606 transitions. [2023-11-29 04:15:22,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3606 transitions. [2023-11-29 04:15:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-29 04:15:22,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:22,195 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:22,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (12)] Ended with exit code 0 [2023-11-29 04:15:22,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-11-29 04:15:22,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:22,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:22,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:22,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1497196462, now seen corresponding path program 1 times [2023-11-29 04:15:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:22,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821629886] [2023-11-29 04:15:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:22,598 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 04:15:22,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:22,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:22,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (14)] Waiting until timeout for monitored process [2023-11-29 04:15:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:23,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:15:23,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:15:24,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:25,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821629886] [2023-11-29 04:15:25,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821629886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:25,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [596652533] [2023-11-29 04:15:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:25,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:25,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:15:25,126 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:15:25,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-29 04:15:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:29,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:15:29,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 04:15:30,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:30,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [596652533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:30,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:15:30,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 04:15:30,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054447544] [2023-11-29 04:15:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:30,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:15:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:15:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:15:30,934 INFO L87 Difference]: Start difference. First operand 2137 states and 3606 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:33,177 INFO L93 Difference]: Finished difference Result 7147 states and 12046 transitions. [2023-11-29 04:15:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:15:33,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 652 [2023-11-29 04:15:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:33,216 INFO L225 Difference]: With dead ends: 7147 [2023-11-29 04:15:33,216 INFO L226 Difference]: Without dead ends: 5713 [2023-11-29 04:15:33,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:15:33,221 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 709 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:33,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1273 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:15:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2023-11-29 04:15:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5707. [2023-11-29 04:15:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5707 states, 4617 states have (on average 1.6356941737058697) internal successors, (7552), 4623 states have internal predecessors, (7552), 1044 states have call successors, (1044), 45 states have call predecessors, (1044), 45 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-11-29 04:15:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5707 states to 5707 states and 9640 transitions. [2023-11-29 04:15:33,882 INFO L78 Accepts]: Start accepts. Automaton has 5707 states and 9640 transitions. Word has length 652 [2023-11-29 04:15:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:33,883 INFO L495 AbstractCegarLoop]: Abstraction has 5707 states and 9640 transitions. [2023-11-29 04:15:33,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 04:15:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5707 states and 9640 transitions. [2023-11-29 04:15:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-29 04:15:33,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:33,893 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:33,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (14)] Ended with exit code 0 [2023-11-29 04:15:34,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-11-29 04:15:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:34,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:34,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash -110993068, now seen corresponding path program 1 times [2023-11-29 04:15:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:34,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752850167] [2023-11-29 04:15:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:34,297 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 04:15:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:34,298 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:34,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (16)] Waiting until timeout for monitored process [2023-11-29 04:15:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:35,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:15:35,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:15:36,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:36,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752850167] [2023-11-29 04:15:36,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752850167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2096455042] [2023-11-29 04:15:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:36,807 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:36,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:15:36,808 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:15:36,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-29 04:15:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:42,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:15:42,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-11-29 04:15:43,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:43,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2096455042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:43,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:43,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 04:15:43,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679707319] [2023-11-29 04:15:43,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:43,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:15:43,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:15:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:15:43,474 INFO L87 Difference]: Start difference. First operand 5707 states and 9640 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:15:45,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:45,735 INFO L93 Difference]: Finished difference Result 10093 states and 16837 transitions. [2023-11-29 04:15:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:15:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 652 [2023-11-29 04:15:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:45,779 INFO L225 Difference]: With dead ends: 10093 [2023-11-29 04:15:45,780 INFO L226 Difference]: Without dead ends: 5849 [2023-11-29 04:15:45,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1465 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:15:45,789 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 229 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:45,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 865 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:15:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2023-11-29 04:15:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 4915. [2023-11-29 04:15:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 3812 states have (on average 1.594700944386149) internal successors, (6079), 3818 states have internal predecessors, (6079), 1044 states have call successors, (1044), 58 states have call predecessors, (1044), 58 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-11-29 04:15:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 8167 transitions. [2023-11-29 04:15:46,404 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 8167 transitions. Word has length 652 [2023-11-29 04:15:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:46,404 INFO L495 AbstractCegarLoop]: Abstraction has 4915 states and 8167 transitions. [2023-11-29 04:15:46,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 04:15:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 8167 transitions. [2023-11-29 04:15:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-29 04:15:46,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:46,415 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:46,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (16)] Ended with exit code 0 [2023-11-29 04:15:46,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-29 04:15:46,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:15:46,816 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:46,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2115353517, now seen corresponding path program 1 times [2023-11-29 04:15:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:46,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658596511] [2023-11-29 04:15:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:46,817 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 04:15:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:46,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:46,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (18)] Waiting until timeout for monitored process [2023-11-29 04:15:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:48,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:15:48,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9602 proven. 183 refuted. 0 times theorem prover too weak. 10819 trivial. 0 not checked. [2023-11-29 04:15:49,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 417 proven. 186 refuted. 0 times theorem prover too weak. 20001 trivial. 0 not checked. [2023-11-29 04:15:50,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658596511] [2023-11-29 04:15:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658596511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:50,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-29 04:15:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812762867] [2023-11-29 04:15:50,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:15:50,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:15:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:15:50,360 INFO L87 Difference]: Start difference. First operand 4915 states and 8167 transitions. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 3 states have call successors, (135), 3 states have call predecessors, (135), 7 states have return successors, (136), 3 states have call predecessors, (136), 3 states have call successors, (136) [2023-11-29 04:15:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:54,519 INFO L93 Difference]: Finished difference Result 9629 states and 15879 transitions. [2023-11-29 04:15:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:15:54,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 3 states have call successors, (135), 3 states have call predecessors, (135), 7 states have return successors, (136), 3 states have call predecessors, (136), 3 states have call successors, (136) Word has length 652 [2023-11-29 04:15:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:54,560 INFO L225 Difference]: With dead ends: 9629 [2023-11-29 04:15:54,560 INFO L226 Difference]: Without dead ends: 6029 [2023-11-29 04:15:54,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1292 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:15:54,569 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1714 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:54,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 1760 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 04:15:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2023-11-29 04:15:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5805. [2023-11-29 04:15:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 4688 states have (on average 1.6205204778156996) internal successors, (7597), 4694 states have internal predecessors, (7597), 1044 states have call successors, (1044), 72 states have call predecessors, (1044), 72 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-11-29 04:15:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 9685 transitions. [2023-11-29 04:15:55,203 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 9685 transitions. Word has length 652 [2023-11-29 04:15:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:55,204 INFO L495 AbstractCegarLoop]: Abstraction has 5805 states and 9685 transitions. [2023-11-29 04:15:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 3 states have call successors, (135), 3 states have call predecessors, (135), 7 states have return successors, (136), 3 states have call predecessors, (136), 3 states have call successors, (136) [2023-11-29 04:15:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 9685 transitions. [2023-11-29 04:15:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-29 04:15:55,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:55,211 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:55,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (18)] Ended with exit code 0 [2023-11-29 04:15:55,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:55,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:55,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1607810479, now seen corresponding path program 1 times [2023-11-29 04:15:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:55,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217845291] [2023-11-29 04:15:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:55,414 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 04:15:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:55,414 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 04:15:55,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e6efd4-23c8-489d-8952-002a2f489a7c/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 (19)] Waiting until timeout for monitored process [2023-11-29 04:15:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:56,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:15:56,657 INFO L285 TraceCheckSpWp]: Computing forward predicates...