./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c --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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/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 cbe797ede424f1ab8a64d91092275cecbbdb84c9d61e688c522ae0087e29fe1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:51:16,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:51:16,427 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:51:16,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:51:16,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:51:16,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:51:16,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:51:16,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:51:16,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:51:16,459 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:51:16,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:51:16,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:51:16,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:51:16,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:51:16,462 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:51:16,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:51:16,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:51:16,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:51:16,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:51:16,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:51:16,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:51:16,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:51:16,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:51:16,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:51:16,467 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:51:16,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:51:16,468 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:51:16,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:51:16,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:51:16,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:51:16,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:51:16,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:51:16,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:51:16,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:51:16,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:51:16,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:51:16,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:51:16,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:51:16,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:51:16,472 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:51:16,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:51:16,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:51:16,472 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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe797ede424f1ab8a64d91092275cecbbdb84c9d61e688c522ae0087e29fe1c [2023-11-29 06:51:16,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:51:16,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:51:16,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:51:16,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:51:16,746 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:51:16,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 06:51:19,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:51:20,229 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:51:20,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 06:51:20,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/data/31d43a68d/55742414b04c4e319f2f1ec6af3fd138/FLAGe96784058 [2023-11-29 06:51:20,278 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/data/31d43a68d/55742414b04c4e319f2f1ec6af3fd138 [2023-11-29 06:51:20,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:51:20,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:51:20,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:51:20,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:51:20,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:51:20,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:51:20" (1/1) ... [2023-11-29 06:51:20,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92f0977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:20, skipping insertion in model container [2023-11-29 06:51:20,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:51:20" (1/1) ... [2023-11-29 06:51:20,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:51:20,738 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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[8786,8799] [2023-11-29 06:51:20,809 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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[15722,15735] [2023-11-29 06:51:21,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:51:21,673 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:51:21,708 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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[8786,8799] [2023-11-29 06:51:21,723 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_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[15722,15735] [2023-11-29 06:51:22,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:51:22,369 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:51:22,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22 WrapperNode [2023-11-29 06:51:22,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:51:22,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:51:22,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:51:22,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:51:22,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:22,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:22,729 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5032 [2023-11-29 06:51:22,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:51:22,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:51:22,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:51:22,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:51:22,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:22,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:22,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:22,998 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 06:51:22,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:22,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:23,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:23,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:23,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:23,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:23,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:51:23,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:51:23,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:51:23,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:51:23,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (1/1) ... [2023-11-29 06:51:23,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:51:23,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:51:23,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:51:23,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:51:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:51:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:51:23,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:51:23,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:51:23,538 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:51:23,541 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:51:28,148 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:51:28,220 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:51:28,220 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:51:28,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:28 BoogieIcfgContainer [2023-11-29 06:51:28,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:51:28,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:51:28,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:51:28,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:51:28,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:51:20" (1/3) ... [2023-11-29 06:51:28,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f08a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:51:28, skipping insertion in model container [2023-11-29 06:51:28,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:22" (2/3) ... [2023-11-29 06:51:28,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f08a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:51:28, skipping insertion in model container [2023-11-29 06:51:28,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:28" (3/3) ... [2023-11-29 06:51:28,231 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 06:51:28,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:51:28,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:51:28,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:51:28,332 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;@29fe16a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:51:28,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:51:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:51:28,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:28,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:28,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:28,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1425616648, now seen corresponding path program 1 times [2023-11-29 06:51:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:28,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544802946] [2023-11-29 06:51:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:28,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:28,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544802946] [2023-11-29 06:51:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544802946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:28,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:28,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:51:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501756545] [2023-11-29 06:51:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:28,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:51:28,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:51:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:51:28,618 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:28,704 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2023-11-29 06:51:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:51:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 06:51:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:28,726 INFO L225 Difference]: With dead ends: 1612 [2023-11-29 06:51:28,726 INFO L226 Difference]: Without dead ends: 816 [2023-11-29 06:51:28,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:51:28,736 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:28,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-29 06:51:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-29 06:51:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-11-29 06:51:28,819 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-11-29 06:51:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:28,820 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-11-29 06:51:28,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-11-29 06:51:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:51:28,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:28,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:51:28,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:28,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1589486970, now seen corresponding path program 1 times [2023-11-29 06:51:28,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:28,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028564597] [2023-11-29 06:51:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028564597] [2023-11-29 06:51:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028564597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:29,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:51:29,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149469664] [2023-11-29 06:51:29,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:29,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:51:29,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:51:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:51:29,057 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:29,154 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2023-11-29 06:51:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:51:29,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 06:51:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:29,159 INFO L225 Difference]: With dead ends: 854 [2023-11-29 06:51:29,159 INFO L226 Difference]: Without dead ends: 816 [2023-11-29 06:51:29,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:51:29,161 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:29,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-29 06:51:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-29 06:51:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-11-29 06:51:29,183 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-11-29 06:51:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:29,184 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-11-29 06:51:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-11-29 06:51:29,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 06:51:29,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:29,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:51:29,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:29,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash 775575541, now seen corresponding path program 1 times [2023-11-29 06:51:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643807621] [2023-11-29 06:51:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:29,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643807621] [2023-11-29 06:51:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643807621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:29,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:29,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:51:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312058763] [2023-11-29 06:51:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:51:29,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:51:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:51:29,348 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:29,560 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-11-29 06:51:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:51:29,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-29 06:51:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:29,568 INFO L225 Difference]: With dead ends: 1096 [2023-11-29 06:51:29,568 INFO L226 Difference]: Without dead ends: 1061 [2023-11-29 06:51:29,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:51:29,570 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:29,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:51:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-11-29 06:51:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-11-29 06:51:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-11-29 06:51:29,600 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-11-29 06:51:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:29,601 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-11-29 06:51:29,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-11-29 06:51:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 06:51:29,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:29,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:29,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:51:29,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:29,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2119825339, now seen corresponding path program 1 times [2023-11-29 06:51:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109373040] [2023-11-29 06:51:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109373040] [2023-11-29 06:51:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109373040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:29,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:29,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472965973] [2023-11-29 06:51:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:29,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:29,680 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:29,722 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-11-29 06:51:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-29 06:51:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:29,729 INFO L225 Difference]: With dead ends: 974 [2023-11-29 06:51:29,729 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 06:51:29,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:29,731 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:29,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 06:51:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-29 06:51:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-11-29 06:51:29,760 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-11-29 06:51:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:29,760 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-11-29 06:51:29,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-11-29 06:51:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 06:51:29,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:29,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:29,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:51:29,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:29,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2117680387, now seen corresponding path program 1 times [2023-11-29 06:51:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667963815] [2023-11-29 06:51:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:29,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:29,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667963815] [2023-11-29 06:51:29,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667963815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:29,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:29,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:51:29,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440703196] [2023-11-29 06:51:29,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:29,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:51:29,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:29,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:51:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:51:29,965 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:30,106 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-11-29 06:51:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:51:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-29 06:51:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:30,112 INFO L225 Difference]: With dead ends: 1029 [2023-11-29 06:51:30,113 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 06:51:30,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:51:30,114 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:30,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 06:51:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-29 06:51:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-11-29 06:51:30,144 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-11-29 06:51:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:30,144 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-11-29 06:51:30,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-11-29 06:51:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 06:51:30,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:30,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:30,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:51:30,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:30,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1351966150, now seen corresponding path program 1 times [2023-11-29 06:51:30,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:30,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42487610] [2023-11-29 06:51:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42487610] [2023-11-29 06:51:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42487610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:51:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153435736] [2023-11-29 06:51:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:30,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:51:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:51:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:51:30,318 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:30,366 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-11-29 06:51:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:51:30,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-11-29 06:51:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:30,372 INFO L225 Difference]: With dead ends: 912 [2023-11-29 06:51:30,373 INFO L226 Difference]: Without dead ends: 910 [2023-11-29 06:51:30,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:51:30,374 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:30,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-29 06:51:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-11-29 06:51:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-11-29 06:51:30,402 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-11-29 06:51:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:30,402 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-11-29 06:51:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-11-29 06:51:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:51:30,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:30,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:30,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:51:30,404 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:30,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:30,404 INFO L85 PathProgramCache]: Analyzing trace with hash -302650947, now seen corresponding path program 1 times [2023-11-29 06:51:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157801189] [2023-11-29 06:51:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:30,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:30,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:30,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157801189] [2023-11-29 06:51:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157801189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:30,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:30,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942587084] [2023-11-29 06:51:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:30,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,454 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:30,489 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-11-29 06:51:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:30,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-29 06:51:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:30,496 INFO L225 Difference]: With dead ends: 1046 [2023-11-29 06:51:30,496 INFO L226 Difference]: Without dead ends: 974 [2023-11-29 06:51:30,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,497 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:30,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-11-29 06:51:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-11-29 06:51:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-11-29 06:51:30,527 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-11-29 06:51:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:30,527 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-11-29 06:51:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-11-29 06:51:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:51:30,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:30,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:51:30,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -888363075, now seen corresponding path program 1 times [2023-11-29 06:51:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593109562] [2023-11-29 06:51:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:30,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593109562] [2023-11-29 06:51:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593109562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:30,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:30,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875575201] [2023-11-29 06:51:30,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:30,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:30,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:30,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,603 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:30,641 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-11-29 06:51:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-29 06:51:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:30,648 INFO L225 Difference]: With dead ends: 1326 [2023-11-29 06:51:30,648 INFO L226 Difference]: Without dead ends: 1137 [2023-11-29 06:51:30,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,649 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:30,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-11-29 06:51:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-11-29 06:51:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-11-29 06:51:30,684 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-11-29 06:51:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:30,685 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-11-29 06:51:30,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-11-29 06:51:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:51:30,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:30,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:30,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:51:30,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:30,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:30,687 INFO L85 PathProgramCache]: Analyzing trace with hash 370365, now seen corresponding path program 1 times [2023-11-29 06:51:30,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:30,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774202413] [2023-11-29 06:51:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:30,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774202413] [2023-11-29 06:51:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774202413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018547790] [2023-11-29 06:51:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,737 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:30,781 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-11-29 06:51:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:30,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-29 06:51:30,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:30,790 INFO L225 Difference]: With dead ends: 1791 [2023-11-29 06:51:30,790 INFO L226 Difference]: Without dead ends: 1439 [2023-11-29 06:51:30,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,792 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:30,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-11-29 06:51:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-11-29 06:51:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-11-29 06:51:30,838 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-11-29 06:51:30,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:30,839 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-11-29 06:51:30,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-11-29 06:51:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:51:30,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:30,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:30,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:51:30,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:30,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash -262707011, now seen corresponding path program 1 times [2023-11-29 06:51:30,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:30,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530252139] [2023-11-29 06:51:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:30,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:30,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530252139] [2023-11-29 06:51:30,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530252139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:30,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:30,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:30,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270678564] [2023-11-29 06:51:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,884 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:30,941 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-11-29 06:51:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:30,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-29 06:51:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:30,952 INFO L225 Difference]: With dead ends: 2649 [2023-11-29 06:51:30,952 INFO L226 Difference]: Without dead ends: 1995 [2023-11-29 06:51:30,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:30,954 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:30,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-11-29 06:51:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-11-29 06:51:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-11-29 06:51:31,022 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-11-29 06:51:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:31,022 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-11-29 06:51:31,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-11-29 06:51:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:51:31,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:31,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:31,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:51:31,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:31,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1594147338, now seen corresponding path program 1 times [2023-11-29 06:51:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:31,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500636485] [2023-11-29 06:51:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:31,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500636485] [2023-11-29 06:51:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500636485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:31,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:31,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391891540] [2023-11-29 06:51:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:51:31,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:31,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:51:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:51:31,164 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:37,822 INFO L93 Difference]: Finished difference Result 4248 states and 7522 transitions. [2023-11-29 06:51:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:51:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 06:51:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:37,837 INFO L225 Difference]: With dead ends: 4248 [2023-11-29 06:51:37,837 INFO L226 Difference]: Without dead ends: 3495 [2023-11-29 06:51:37,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:51:37,839 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 2360 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:37,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 773 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-29 06:51:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2023-11-29 06:51:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2023-11-29 06:51:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3493 states have (on average 1.5250501002004009) internal successors, (5327), 3494 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5327 transitions. [2023-11-29 06:51:37,914 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5327 transitions. Word has length 59 [2023-11-29 06:51:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:37,915 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5327 transitions. [2023-11-29 06:51:37,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5327 transitions. [2023-11-29 06:51:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:51:37,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:37,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:37,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:51:37,916 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:37,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1070420117, now seen corresponding path program 1 times [2023-11-29 06:51:37,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:37,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790690969] [2023-11-29 06:51:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:37,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:51:38,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790690969] [2023-11-29 06:51:38,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790690969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:38,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:38,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:51:38,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824560030] [2023-11-29 06:51:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:51:38,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:51:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:51:38,016 INFO L87 Difference]: Start difference. First operand 3495 states and 5327 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:38,210 INFO L93 Difference]: Finished difference Result 8257 states and 12188 transitions. [2023-11-29 06:51:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:51:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 06:51:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:38,237 INFO L225 Difference]: With dead ends: 8257 [2023-11-29 06:51:38,238 INFO L226 Difference]: Without dead ends: 7391 [2023-11-29 06:51:38,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:51:38,241 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:38,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:51:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2023-11-29 06:51:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 4535. [2023-11-29 06:51:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5016545334215752) internal successors, (6807), 4534 states have internal predecessors, (6807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6807 transitions. [2023-11-29 06:51:38,409 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6807 transitions. Word has length 61 [2023-11-29 06:51:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:38,409 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6807 transitions. [2023-11-29 06:51:38,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6807 transitions. [2023-11-29 06:51:38,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:51:38,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:38,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:51:38,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash 484707989, now seen corresponding path program 1 times [2023-11-29 06:51:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456492000] [2023-11-29 06:51:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:51:38,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456492000] [2023-11-29 06:51:38,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456492000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:38,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:51:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773625333] [2023-11-29 06:51:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:38,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:51:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:51:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:51:38,507 INFO L87 Difference]: Start difference. First operand 4535 states and 6807 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:38,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:38,736 INFO L93 Difference]: Finished difference Result 9465 states and 13916 transitions. [2023-11-29 06:51:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:51:38,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 06:51:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:38,763 INFO L225 Difference]: With dead ends: 9465 [2023-11-29 06:51:38,763 INFO L226 Difference]: Without dead ends: 8255 [2023-11-29 06:51:38,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:51:38,768 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:38,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:51:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2023-11-29 06:51:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 6175. [2023-11-29 06:51:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6173 states have (on average 1.4798315243803661) internal successors, (9135), 6174 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 9135 transitions. [2023-11-29 06:51:38,960 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 9135 transitions. Word has length 61 [2023-11-29 06:51:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:38,960 INFO L495 AbstractCegarLoop]: Abstraction has 6175 states and 9135 transitions. [2023-11-29 06:51:38,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 9135 transitions. [2023-11-29 06:51:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:51:38,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:38,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:38,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:51:38,962 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:38,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1373441429, now seen corresponding path program 1 times [2023-11-29 06:51:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:38,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521079195] [2023-11-29 06:51:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:38,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 06:51:39,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:39,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521079195] [2023-11-29 06:51:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521079195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:39,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:51:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597743023] [2023-11-29 06:51:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:39,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:51:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:51:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:51:39,064 INFO L87 Difference]: Start difference. First operand 6175 states and 9135 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:39,348 INFO L93 Difference]: Finished difference Result 10673 states and 15636 transitions. [2023-11-29 06:51:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:51:39,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 06:51:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:39,362 INFO L225 Difference]: With dead ends: 10673 [2023-11-29 06:51:39,362 INFO L226 Difference]: Without dead ends: 9463 [2023-11-29 06:51:39,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:51:39,366 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:39,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:51:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2023-11-29 06:51:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 7383. [2023-11-29 06:51:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7381 states have (on average 1.4706679311746376) internal successors, (10855), 7382 states have internal predecessors, (10855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10855 transitions. [2023-11-29 06:51:39,549 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10855 transitions. Word has length 61 [2023-11-29 06:51:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:39,550 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 10855 transitions. [2023-11-29 06:51:39,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10855 transitions. [2023-11-29 06:51:39,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:51:39,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:39,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:39,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:51:39,552 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:39,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1110364053, now seen corresponding path program 1 times [2023-11-29 06:51:39,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146280789] [2023-11-29 06:51:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:51:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:39,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146280789] [2023-11-29 06:51:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146280789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:51:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104486882] [2023-11-29 06:51:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:51:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:51:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:51:39,646 INFO L87 Difference]: Start difference. First operand 7383 states and 10855 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:39,922 INFO L93 Difference]: Finished difference Result 11881 states and 17356 transitions. [2023-11-29 06:51:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:51:39,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 06:51:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:39,937 INFO L225 Difference]: With dead ends: 11881 [2023-11-29 06:51:39,937 INFO L226 Difference]: Without dead ends: 10671 [2023-11-29 06:51:39,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:51:39,942 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:39,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:51:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2023-11-29 06:51:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 8591. [2023-11-29 06:51:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4640819653044592) internal successors, (12575), 8590 states have internal predecessors, (12575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12575 transitions. [2023-11-29 06:51:40,189 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12575 transitions. Word has length 61 [2023-11-29 06:51:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:40,189 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12575 transitions. [2023-11-29 06:51:40,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12575 transitions. [2023-11-29 06:51:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 06:51:40,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:40,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:40,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:51:40,191 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:40,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash -263811695, now seen corresponding path program 1 times [2023-11-29 06:51:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:40,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456519273] [2023-11-29 06:51:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:40,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:40,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456519273] [2023-11-29 06:51:40,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456519273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:40,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:40,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075978829] [2023-11-29 06:51:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:40,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:40,261 INFO L87 Difference]: Start difference. First operand 8591 states and 12575 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:40,413 INFO L93 Difference]: Finished difference Result 14899 states and 21569 transitions. [2023-11-29 06:51:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:40,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 06:51:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:40,426 INFO L225 Difference]: With dead ends: 14899 [2023-11-29 06:51:40,427 INFO L226 Difference]: Without dead ends: 8593 [2023-11-29 06:51:40,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:40,434 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:40,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2023-11-29 06:51:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2023-11-29 06:51:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4496448946326697) internal successors, (12451), 8590 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12451 transitions. [2023-11-29 06:51:40,717 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12451 transitions. Word has length 62 [2023-11-29 06:51:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:40,717 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12451 transitions. [2023-11-29 06:51:40,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:40,717 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12451 transitions. [2023-11-29 06:51:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:51:40,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:40,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:40,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:51:40,719 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:40,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1786499741, now seen corresponding path program 1 times [2023-11-29 06:51:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711195746] [2023-11-29 06:51:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:40,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:40,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:40,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711195746] [2023-11-29 06:51:40,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711195746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:40,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:40,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:40,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080943321] [2023-11-29 06:51:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:40,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:40,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:40,805 INFO L87 Difference]: Start difference. First operand 8591 states and 12451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:40,904 INFO L93 Difference]: Finished difference Result 10987 states and 15858 transitions. [2023-11-29 06:51:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:40,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 06:51:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:40,910 INFO L225 Difference]: With dead ends: 10987 [2023-11-29 06:51:40,910 INFO L226 Difference]: Without dead ends: 4681 [2023-11-29 06:51:40,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:40,916 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:40,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2023-11-29 06:51:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4674. [2023-11-29 06:51:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4672 states have (on average 1.4850171232876712) internal successors, (6938), 4673 states have internal predecessors, (6938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6938 transitions. [2023-11-29 06:51:41,008 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6938 transitions. Word has length 63 [2023-11-29 06:51:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:41,008 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 6938 transitions. [2023-11-29 06:51:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6938 transitions. [2023-11-29 06:51:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 06:51:41,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:41,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:41,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:51:41,010 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:41,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash 884488671, now seen corresponding path program 1 times [2023-11-29 06:51:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:41,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639371858] [2023-11-29 06:51:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:41,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:41,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639371858] [2023-11-29 06:51:41,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639371858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:41,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:41,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665864050] [2023-11-29 06:51:41,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:41,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:41,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:41,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:41,077 INFO L87 Difference]: Start difference. First operand 4674 states and 6938 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:41,129 INFO L93 Difference]: Finished difference Result 5866 states and 8612 transitions. [2023-11-29 06:51:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:41,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 06:51:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:41,135 INFO L225 Difference]: With dead ends: 5866 [2023-11-29 06:51:41,135 INFO L226 Difference]: Without dead ends: 3488 [2023-11-29 06:51:41,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:41,138 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:41,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2023-11-29 06:51:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2023-11-29 06:51:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3484 states have (on average 1.505166475315729) internal successors, (5244), 3485 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5244 transitions. [2023-11-29 06:51:41,199 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5244 transitions. Word has length 64 [2023-11-29 06:51:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:41,199 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 5244 transitions. [2023-11-29 06:51:41,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5244 transitions. [2023-11-29 06:51:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 06:51:41,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:41,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:51:41,201 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:41,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash 841150381, now seen corresponding path program 1 times [2023-11-29 06:51:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554378422] [2023-11-29 06:51:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554378422] [2023-11-29 06:51:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554378422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:51:41,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:51:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:51:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446779456] [2023-11-29 06:51:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:51:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:51:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:51:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:41,268 INFO L87 Difference]: Start difference. First operand 3486 states and 5244 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:41,308 INFO L93 Difference]: Finished difference Result 4084 states and 6071 transitions. [2023-11-29 06:51:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:51:41,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 06:51:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:41,312 INFO L225 Difference]: With dead ends: 4084 [2023-11-29 06:51:41,312 INFO L226 Difference]: Without dead ends: 2894 [2023-11-29 06:51:41,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:51:41,314 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:41,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:51:41,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2023-11-29 06:51:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2892. [2023-11-29 06:51:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2890 states have (on average 1.5252595155709343) internal successors, (4408), 2891 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4408 transitions. [2023-11-29 06:51:41,360 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4408 transitions. Word has length 66 [2023-11-29 06:51:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:41,360 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4408 transitions. [2023-11-29 06:51:41,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4408 transitions. [2023-11-29 06:51:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 06:51:41,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:41,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:41,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:51:41,361 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:41,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash -136343813, now seen corresponding path program 1 times [2023-11-29 06:51:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:41,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389733016] [2023-11-29 06:51:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:42,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:42,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389733016] [2023-11-29 06:51:42,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389733016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:51:42,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531135414] [2023-11-29 06:51:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:42,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:51:42,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:51:42,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:51:42,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:51:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:42,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:51:42,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:51:43,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:51:43,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531135414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:51:43,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:51:43,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 06:51:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860320658] [2023-11-29 06:51:43,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:51:43,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:51:43,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:51:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:51:43,329 INFO L87 Difference]: Start difference. First operand 2892 states and 4408 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:46,062 INFO L93 Difference]: Finished difference Result 7047 states and 9901 transitions. [2023-11-29 06:51:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 06:51:46,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-29 06:51:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:46,070 INFO L225 Difference]: With dead ends: 7047 [2023-11-29 06:51:46,070 INFO L226 Difference]: Without dead ends: 6451 [2023-11-29 06:51:46,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:51:46,074 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 11690 mSDsluCounter, 6322 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11690 SdHoareTripleChecker+Valid, 7824 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:46,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11690 Valid, 7824 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:51:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2023-11-29 06:51:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6123. [2023-11-29 06:51:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6121 states have (on average 1.3945433752654794) internal successors, (8536), 6122 states have internal predecessors, (8536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 8536 transitions. [2023-11-29 06:51:46,220 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 8536 transitions. Word has length 68 [2023-11-29 06:51:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:46,220 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 8536 transitions. [2023-11-29 06:51:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 8536 transitions. [2023-11-29 06:51:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 06:51:46,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:46,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:46,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:51:46,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:51:46,422 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:46,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash -600280717, now seen corresponding path program 1 times [2023-11-29 06:51:46,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:46,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628994244] [2023-11-29 06:51:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:46,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:49,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:49,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628994244] [2023-11-29 06:51:49,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628994244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:51:49,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748052393] [2023-11-29 06:51:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:49,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:51:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:51:49,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:51:49,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:51:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:49,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:51:49,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:50,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748052393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:51:51,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:51:51,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 06:51:51,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465915607] [2023-11-29 06:51:51,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:51:51,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:51:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:51:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:51:51,126 INFO L87 Difference]: Start difference. First operand 6123 states and 8536 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:53,799 INFO L93 Difference]: Finished difference Result 22069 states and 29098 transitions. [2023-11-29 06:51:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 06:51:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-29 06:51:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:53,815 INFO L225 Difference]: With dead ends: 22069 [2023-11-29 06:51:53,815 INFO L226 Difference]: Without dead ends: 18713 [2023-11-29 06:51:53,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=596, Invalid=2710, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 06:51:53,821 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18912 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18912 SdHoareTripleChecker+Valid, 9478 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:53,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18912 Valid, 9478 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:51:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18713 states. [2023-11-29 06:51:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18713 to 17341. [2023-11-29 06:51:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17341 states, 17339 states have (on average 1.3232597035584521) internal successors, (22944), 17340 states have internal predecessors, (22944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 22944 transitions. [2023-11-29 06:51:54,470 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 22944 transitions. Word has length 69 [2023-11-29 06:51:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:54,470 INFO L495 AbstractCegarLoop]: Abstraction has 17341 states and 22944 transitions. [2023-11-29 06:51:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 22944 transitions. [2023-11-29 06:51:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 06:51:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:54,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:54,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:51:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 06:51:54,673 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:51:54,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1351926847, now seen corresponding path program 1 times [2023-11-29 06:51:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:54,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973909903] [2023-11-29 06:51:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:55,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973909903] [2023-11-29 06:51:55,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973909903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:51:55,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569674056] [2023-11-29 06:51:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:55,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:51:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:51:55,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:51:55,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:51:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:55,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:51:55,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:55,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569674056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:51:56,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:51:56,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 06:51:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162635491] [2023-11-29 06:51:56,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:51:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 06:51:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 06:51:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:51:56,621 INFO L87 Difference]: Start difference. First operand 17341 states and 22944 transitions. Second operand has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:52:01,050 INFO L93 Difference]: Finished difference Result 56214 states and 72427 transitions. [2023-11-29 06:52:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 06:52:01,051 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-29 06:52:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:52:01,086 INFO L225 Difference]: With dead ends: 56214 [2023-11-29 06:52:01,086 INFO L226 Difference]: Without dead ends: 42287 [2023-11-29 06:52:01,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 06:52:01,102 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 21146 mSDsluCounter, 8010 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21146 SdHoareTripleChecker+Valid, 9508 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:52:01,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21146 Valid, 9508 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:52:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42287 states. [2023-11-29 06:52:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42287 to 22867. [2023-11-29 06:52:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 22865 states have (on average 1.2874699322108025) internal successors, (29438), 22866 states have internal predecessors, (29438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 29438 transitions. [2023-11-29 06:52:02,354 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 29438 transitions. Word has length 69 [2023-11-29 06:52:02,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:52:02,354 INFO L495 AbstractCegarLoop]: Abstraction has 22867 states and 29438 transitions. [2023-11-29 06:52:02,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 29438 transitions. [2023-11-29 06:52:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 06:52:02,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:52:02,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:52:02,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:52:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:52:02,557 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:52:02,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:52:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1034756201, now seen corresponding path program 1 times [2023-11-29 06:52:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:52:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045551481] [2023-11-29 06:52:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:52:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:02,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:52:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045551481] [2023-11-29 06:52:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045551481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:52:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442819924] [2023-11-29 06:52:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:02,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:52:02,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:52:02,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:52:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:52:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:02,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:52:02,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:52:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:03,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:52:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442819924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:52:04,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:52:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 06:52:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795930761] [2023-11-29 06:52:04,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:52:04,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:52:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:52:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:52:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:52:04,083 INFO L87 Difference]: Start difference. First operand 22867 states and 29438 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:52:05,550 INFO L93 Difference]: Finished difference Result 43144 states and 54987 transitions. [2023-11-29 06:52:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:52:05,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-29 06:52:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:52:05,574 INFO L225 Difference]: With dead ends: 43144 [2023-11-29 06:52:05,574 INFO L226 Difference]: Without dead ends: 24629 [2023-11-29 06:52:05,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:52:05,589 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 13458 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13458 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:52:05,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13458 Valid, 4668 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:52:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24629 states. [2023-11-29 06:52:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24629 to 23191. [2023-11-29 06:52:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23189 states have (on average 1.2758635559963776) internal successors, (29586), 23190 states have internal predecessors, (29586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 29586 transitions. [2023-11-29 06:52:06,980 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 29586 transitions. Word has length 70 [2023-11-29 06:52:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:52:06,981 INFO L495 AbstractCegarLoop]: Abstraction has 23191 states and 29586 transitions. [2023-11-29 06:52:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 29586 transitions. [2023-11-29 06:52:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 06:52:06,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:52:06,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:52:06,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:52:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:52:07,184 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:52:07,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:52:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1418177617, now seen corresponding path program 1 times [2023-11-29 06:52:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:52:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129775278] [2023-11-29 06:52:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:52:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:52:09,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129775278] [2023-11-29 06:52:09,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129775278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:52:09,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169137144] [2023-11-29 06:52:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:52:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:52:09,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:52:09,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:52:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:09,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:52:09,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:52:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:15,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:52:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:19,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169137144] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:52:19,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:52:19,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 19] total 61 [2023-11-29 06:52:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316459495] [2023-11-29 06:52:19,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:52:19,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 06:52:19,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:52:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 06:52:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:52:19,008 INFO L87 Difference]: Start difference. First operand 23191 states and 29586 transitions. Second operand has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:55:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:55:20,389 INFO L93 Difference]: Finished difference Result 80181 states and 99404 transitions. [2023-11-29 06:55:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-11-29 06:55:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-29 06:55:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:55:20,445 INFO L225 Difference]: With dead ends: 80181 [2023-11-29 06:55:20,445 INFO L226 Difference]: Without dead ends: 68754 [2023-11-29 06:55:20,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105628 ImplicationChecksByTransitivity, 170.2s TimeCoverageRelationStatistics Valid=32146, Invalid=203564, Unknown=0, NotChecked=0, Total=235710 [2023-11-29 06:55:20,481 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 34984 mSDsluCounter, 36709 mSDsCounter, 0 mSdLazyCounter, 6764 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34984 SdHoareTripleChecker+Valid, 38319 SdHoareTripleChecker+Invalid, 6979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 6764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:55:20,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34984 Valid, 38319 Invalid, 6979 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [215 Valid, 6764 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 06:55:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68754 states. [2023-11-29 06:55:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68754 to 39250. [2023-11-29 06:55:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39250 states, 39248 states have (on average 1.2575927435792906) internal successors, (49358), 39249 states have internal predecessors, (49358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:55:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39250 states to 39250 states and 49358 transitions. [2023-11-29 06:55:23,210 INFO L78 Accepts]: Start accepts. Automaton has 39250 states and 49358 transitions. Word has length 71 [2023-11-29 06:55:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:55:23,210 INFO L495 AbstractCegarLoop]: Abstraction has 39250 states and 49358 transitions. [2023-11-29 06:55:23,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:55:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 39250 states and 49358 transitions. [2023-11-29 06:55:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 06:55:23,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:55:23,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:55:23,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:55:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:55:23,413 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:55:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:55:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1344690513, now seen corresponding path program 1 times [2023-11-29 06:55:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:55:23,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892122045] [2023-11-29 06:55:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:55:23,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:55:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:55:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:55:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:55:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892122045] [2023-11-29 06:55:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892122045] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:55:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888912172] [2023-11-29 06:55:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:55:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:55:25,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:55:25,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:55:25,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:55:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:55:25,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 06:55:25,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:55:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:55:26,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:55:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:55:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888912172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:55:27,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:55:27,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 16] total 53 [2023-11-29 06:55:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894868631] [2023-11-29 06:55:27,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:55:27,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 06:55:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:55:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 06:55:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 06:55:27,672 INFO L87 Difference]: Start difference. First operand 39250 states and 49358 transitions. Second operand has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:55:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:55:57,059 INFO L93 Difference]: Finished difference Result 89200 states and 111518 transitions. [2023-11-29 06:55:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-11-29 06:55:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-29 06:55:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:55:57,120 INFO L225 Difference]: With dead ends: 89200 [2023-11-29 06:55:57,120 INFO L226 Difference]: Without dead ends: 70352 [2023-11-29 06:55:57,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=7356, Invalid=28176, Unknown=0, NotChecked=0, Total=35532 [2023-11-29 06:55:57,134 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 33892 mSDsluCounter, 28697 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33892 SdHoareTripleChecker+Valid, 30266 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:55:57,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33892 Valid, 30266 Invalid, 3917 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [221 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 06:55:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70352 states. [2023-11-29 06:56:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70352 to 33746. [2023-11-29 06:56:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33746 states, 33744 states have (on average 1.2603722143195828) internal successors, (42530), 33745 states have internal predecessors, (42530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33746 states to 33746 states and 42530 transitions. [2023-11-29 06:56:00,191 INFO L78 Accepts]: Start accepts. Automaton has 33746 states and 42530 transitions. Word has length 71 [2023-11-29 06:56:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:00,191 INFO L495 AbstractCegarLoop]: Abstraction has 33746 states and 42530 transitions. [2023-11-29 06:56:00,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 33746 states and 42530 transitions. [2023-11-29 06:56:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 06:56:00,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:00,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:56:00,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:56:00,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:00,393 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:00,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:00,393 INFO L85 PathProgramCache]: Analyzing trace with hash 84087227, now seen corresponding path program 1 times [2023-11-29 06:56:00,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:00,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31807634] [2023-11-29 06:56:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:00,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31807634] [2023-11-29 06:56:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31807634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:56:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861668539] [2023-11-29 06:56:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:00,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:00,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:00,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:00,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:56:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:01,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:56:01,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:02,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861668539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:05,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:56:05,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 41 [2023-11-29 06:56:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760799231] [2023-11-29 06:56:05,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 06:56:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 06:56:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 06:56:05,657 INFO L87 Difference]: Start difference. First operand 33746 states and 42530 transitions. Second operand has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:15,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:15,796 INFO L93 Difference]: Finished difference Result 45482 states and 56851 transitions. [2023-11-29 06:56:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 06:56:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-29 06:56:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:15,826 INFO L225 Difference]: With dead ends: 45482 [2023-11-29 06:56:15,826 INFO L226 Difference]: Without dead ends: 31449 [2023-11-29 06:56:15,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2102, Invalid=6828, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 06:56:15,839 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 23692 mSDsluCounter, 16394 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23692 SdHoareTripleChecker+Valid, 17903 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:15,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23692 Valid, 17903 Invalid, 971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:56:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31449 states. [2023-11-29 06:56:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31449 to 28285. [2023-11-29 06:56:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28285 states, 28283 states have (on average 1.2625959056677156) internal successors, (35710), 28284 states have internal predecessors, (35710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28285 states to 28285 states and 35710 transitions. [2023-11-29 06:56:18,360 INFO L78 Accepts]: Start accepts. Automaton has 28285 states and 35710 transitions. Word has length 73 [2023-11-29 06:56:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:18,361 INFO L495 AbstractCegarLoop]: Abstraction has 28285 states and 35710 transitions. [2023-11-29 06:56:18,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:18,361 INFO L276 IsEmpty]: Start isEmpty. Operand 28285 states and 35710 transitions. [2023-11-29 06:56:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 06:56:18,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:18,364 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:56:18,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:56:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:56:18,565 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:18,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -371225047, now seen corresponding path program 1 times [2023-11-29 06:56:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810724026] [2023-11-29 06:56:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810724026] [2023-11-29 06:56:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810724026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:56:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78628379] [2023-11-29 06:56:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:19,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:19,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:19,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:19,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:56:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:19,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:56:19,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:20,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78628379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:23,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:56:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 06:56:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743505264] [2023-11-29 06:56:23,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:23,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 06:56:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 06:56:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:56:23,061 INFO L87 Difference]: Start difference. First operand 28285 states and 35710 transitions. Second operand has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:37,411 INFO L93 Difference]: Finished difference Result 65593 states and 81440 transitions. [2023-11-29 06:56:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-29 06:56:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-11-29 06:56:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:37,453 INFO L225 Difference]: With dead ends: 65593 [2023-11-29 06:56:37,453 INFO L226 Difference]: Without dead ends: 47571 [2023-11-29 06:56:37,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5331 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2807, Invalid=15825, Unknown=0, NotChecked=0, Total=18632 [2023-11-29 06:56:37,469 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 17317 mSDsluCounter, 20171 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17317 SdHoareTripleChecker+Valid, 21694 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:37,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17317 Valid, 21694 Invalid, 2011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:56:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47571 states. [2023-11-29 06:56:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47571 to 34456. [2023-11-29 06:56:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34456 states, 34454 states have (on average 1.2410170081848262) internal successors, (42758), 34455 states have internal predecessors, (42758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34456 states to 34456 states and 42758 transitions. [2023-11-29 06:56:40,335 INFO L78 Accepts]: Start accepts. Automaton has 34456 states and 42758 transitions. Word has length 114 [2023-11-29 06:56:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:40,335 INFO L495 AbstractCegarLoop]: Abstraction has 34456 states and 42758 transitions. [2023-11-29 06:56:40,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 34456 states and 42758 transitions. [2023-11-29 06:56:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:56:40,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:40,339 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:56:40,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:56:40,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:56:40,540 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:40,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:40,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1587052505, now seen corresponding path program 1 times [2023-11-29 06:56:40,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:40,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621976857] [2023-11-29 06:56:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:40,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:41,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:41,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621976857] [2023-11-29 06:56:41,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621976857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:56:41,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228335795] [2023-11-29 06:56:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:41,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:41,694 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:56:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:41,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:56:41,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:42,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228335795] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:44,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:56:44,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-11-29 06:56:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898084554] [2023-11-29 06:56:44,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:44,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 06:56:44,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 06:56:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:56:44,882 INFO L87 Difference]: Start difference. First operand 34456 states and 42758 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:50,851 INFO L93 Difference]: Finished difference Result 59897 states and 73713 transitions. [2023-11-29 06:56:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 06:56:50,852 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 06:56:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:50,888 INFO L225 Difference]: With dead ends: 59897 [2023-11-29 06:56:50,888 INFO L226 Difference]: Without dead ends: 41357 [2023-11-29 06:56:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=859, Invalid=3047, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 06:56:50,899 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 22681 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22681 SdHoareTripleChecker+Valid, 13657 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:50,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22681 Valid, 13657 Invalid, 804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:56:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41357 states. [2023-11-29 06:56:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41357 to 34456. [2023-11-29 06:56:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34456 states, 34454 states have (on average 1.2327451094212574) internal successors, (42473), 34455 states have internal predecessors, (42473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34456 states to 34456 states and 42473 transitions. [2023-11-29 06:56:54,438 INFO L78 Accepts]: Start accepts. Automaton has 34456 states and 42473 transitions. Word has length 115 [2023-11-29 06:56:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:54,438 INFO L495 AbstractCegarLoop]: Abstraction has 34456 states and 42473 transitions. [2023-11-29 06:56:54,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:56:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 34456 states and 42473 transitions. [2023-11-29 06:56:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:56:54,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:54,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:56:54,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:56:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:56:54,643 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -180146983, now seen corresponding path program 1 times [2023-11-29 06:56:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002326271] [2023-11-29 06:56:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:54,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:55,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002326271] [2023-11-29 06:56:55,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002326271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:56:55,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014171338] [2023-11-29 06:56:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:55,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:55,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:55,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:55,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:56:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:56:55,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:56,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:56:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014171338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:58,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:56:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-11-29 06:56:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52595167] [2023-11-29 06:56:58,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:58,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:56:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:56:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:56:58,846 INFO L87 Difference]: Start difference. First operand 34456 states and 42473 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:03,229 INFO L93 Difference]: Finished difference Result 53733 states and 66116 transitions. [2023-11-29 06:57:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:57:03,230 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 06:57:03,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:03,265 INFO L225 Difference]: With dead ends: 53733 [2023-11-29 06:57:03,265 INFO L226 Difference]: Without dead ends: 38887 [2023-11-29 06:57:03,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 06:57:03,276 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 18048 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18048 SdHoareTripleChecker+Valid, 10703 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18048 Valid, 10703 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:57:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38887 states. [2023-11-29 06:57:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38887 to 34456. [2023-11-29 06:57:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34456 states, 34454 states have (on average 1.2254310094618912) internal successors, (42221), 34455 states have internal predecessors, (42221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34456 states to 34456 states and 42221 transitions. [2023-11-29 06:57:06,597 INFO L78 Accepts]: Start accepts. Automaton has 34456 states and 42221 transitions. Word has length 115 [2023-11-29 06:57:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:06,597 INFO L495 AbstractCegarLoop]: Abstraction has 34456 states and 42221 transitions. [2023-11-29 06:57:06,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34456 states and 42221 transitions. [2023-11-29 06:57:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 06:57:06,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:06,600 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:06,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:57:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:57:06,801 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:06,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2091291649, now seen corresponding path program 1 times [2023-11-29 06:57:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989803697] [2023-11-29 06:57:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:08,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989803697] [2023-11-29 06:57:08,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989803697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:08,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844257979] [2023-11-29 06:57:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:08,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:08,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:08,296 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:08,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:57:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:08,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:57:08,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:10,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844257979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:14,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:57:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 57 [2023-11-29 06:57:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272388670] [2023-11-29 06:57:15,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:15,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 06:57:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:15,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 06:57:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 06:57:15,002 INFO L87 Difference]: Start difference. First operand 34456 states and 42221 transitions. Second operand has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:58:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:19,169 INFO L93 Difference]: Finished difference Result 75374 states and 91140 transitions. [2023-11-29 06:58:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-11-29 06:58:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 06:58:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:19,236 INFO L225 Difference]: With dead ends: 75374 [2023-11-29 06:58:19,236 INFO L226 Difference]: Without dead ends: 67706 [2023-11-29 06:58:19,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23428 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=8348, Invalid=59512, Unknown=0, NotChecked=0, Total=67860 [2023-11-29 06:58:19,250 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 22446 mSDsluCounter, 39257 mSDsCounter, 0 mSdLazyCounter, 5169 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22446 SdHoareTripleChecker+Valid, 40900 SdHoareTripleChecker+Invalid, 5482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 5169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:19,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22446 Valid, 40900 Invalid, 5482 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [313 Valid, 5169 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 06:58:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67706 states. [2023-11-29 06:58:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67706 to 39923. [2023-11-29 06:58:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39923 states, 39921 states have (on average 1.2184815009644048) internal successors, (48643), 39922 states have internal predecessors, (48643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:58:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39923 states to 39923 states and 48643 transitions. [2023-11-29 06:58:24,755 INFO L78 Accepts]: Start accepts. Automaton has 39923 states and 48643 transitions. Word has length 116 [2023-11-29 06:58:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:24,755 INFO L495 AbstractCegarLoop]: Abstraction has 39923 states and 48643 transitions. [2023-11-29 06:58:24,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:58:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 39923 states and 48643 transitions. [2023-11-29 06:58:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 06:58:24,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:24,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:58:24,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:58:24,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:24,960 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:24,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash 349447389, now seen corresponding path program 1 times [2023-11-29 06:58:24,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:24,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910729338] [2023-11-29 06:58:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:24,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:58:26,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:26,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910729338] [2023-11-29 06:58:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910729338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:26,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951833083] [2023-11-29 06:58:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:26,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:26,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:26,655 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:26,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:58:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 06:58:26,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:58:29,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:58:35,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951833083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:58:35,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:58:35,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 21] total 62 [2023-11-29 06:58:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125378540] [2023-11-29 06:58:35,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:58:35,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 06:58:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 06:58:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3412, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 06:58:35,710 INFO L87 Difference]: Start difference. First operand 39923 states and 48643 transitions. Second operand has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:34,964 INFO L93 Difference]: Finished difference Result 94557 states and 113088 transitions. [2023-11-29 07:00:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2023-11-29 07:00:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 07:00:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:35,052 INFO L225 Difference]: With dead ends: 94557 [2023-11-29 07:00:35,052 INFO L226 Difference]: Without dead ends: 83848 [2023-11-29 07:00:35,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101927 ImplicationChecksByTransitivity, 95.5s TimeCoverageRelationStatistics Valid=23255, Invalid=232275, Unknown=0, NotChecked=0, Total=255530 [2023-11-29 07:00:35,076 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 23610 mSDsluCounter, 46183 mSDsCounter, 0 mSdLazyCounter, 11211 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23610 SdHoareTripleChecker+Valid, 47924 SdHoareTripleChecker+Invalid, 11461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 11211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:35,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23610 Valid, 47924 Invalid, 11461 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [250 Valid, 11211 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-11-29 07:00:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83848 states. [2023-11-29 07:00:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83848 to 43252. [2023-11-29 07:00:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43252 states, 43250 states have (on average 1.2155144508670521) internal successors, (52571), 43251 states have internal predecessors, (52571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43252 states to 43252 states and 52571 transitions. [2023-11-29 07:00:42,140 INFO L78 Accepts]: Start accepts. Automaton has 43252 states and 52571 transitions. Word has length 116 [2023-11-29 07:00:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:42,140 INFO L495 AbstractCegarLoop]: Abstraction has 43252 states and 52571 transitions. [2023-11-29 07:00:42,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 43252 states and 52571 transitions. [2023-11-29 07:00:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 07:00:42,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:42,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:42,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:00:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:00:42,345 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:42,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1659761441, now seen corresponding path program 1 times [2023-11-29 07:00:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:42,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245741849] [2023-11-29 07:00:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:00:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245741849] [2023-11-29 07:00:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245741849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:00:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272187547] [2023-11-29 07:00:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:43,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:00:43,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:00:43,335 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:00:43,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:00:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 07:00:43,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:00:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:44,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:00:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:00:46,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272187547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:00:46,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:00:46,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2023-11-29 07:00:46,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628148649] [2023-11-29 07:00:46,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:00:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 07:00:46,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 07:00:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 07:00:46,585 INFO L87 Difference]: Start difference. First operand 43252 states and 52571 transitions. Second operand has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:01:01,356 INFO L93 Difference]: Finished difference Result 78109 states and 94532 transitions. [2023-11-29 07:01:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 07:01:01,357 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 07:01:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:01:01,409 INFO L225 Difference]: With dead ends: 78109 [2023-11-29 07:01:01,409 INFO L226 Difference]: Without dead ends: 49569 [2023-11-29 07:01:01,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1819, Invalid=6371, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 07:01:01,422 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 14205 mSDsluCounter, 20444 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14205 SdHoareTripleChecker+Valid, 21980 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:01:01,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14205 Valid, 21980 Invalid, 1748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 07:01:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49569 states. [2023-11-29 07:01:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49569 to 43120. [2023-11-29 07:01:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43120 states, 43118 states have (on average 1.215037803237627) internal successors, (52390), 43119 states have internal predecessors, (52390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43120 states to 43120 states and 52390 transitions. [2023-11-29 07:01:08,499 INFO L78 Accepts]: Start accepts. Automaton has 43120 states and 52390 transitions. Word has length 116 [2023-11-29 07:01:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:01:08,500 INFO L495 AbstractCegarLoop]: Abstraction has 43120 states and 52390 transitions. [2023-11-29 07:01:08,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 43120 states and 52390 transitions. [2023-11-29 07:01:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 07:01:08,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:01:08,503 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:08,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 07:01:08,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:08,704 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:01:08,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1305055869, now seen corresponding path program 1 times [2023-11-29 07:01:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492844424] [2023-11-29 07:01:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:08,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:01:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492844424] [2023-11-29 07:01:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492844424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603261145] [2023-11-29 07:01:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:10,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:10,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:10,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:01:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:10,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 07:01:10,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:01:12,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:01:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:01:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603261145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:01:18,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:01:18,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 57 [2023-11-29 07:01:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510127581] [2023-11-29 07:01:18,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:01:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 07:01:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 07:01:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2952, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 07:01:18,066 INFO L87 Difference]: Start difference. First operand 43120 states and 52390 transitions. Second operand has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:02:40,477 INFO L93 Difference]: Finished difference Result 112597 states and 134891 transitions. [2023-11-29 07:02:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-11-29 07:02:40,478 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 07:02:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:02:40,567 INFO L225 Difference]: With dead ends: 112597 [2023-11-29 07:02:40,567 INFO L226 Difference]: Without dead ends: 87063 [2023-11-29 07:02:40,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20770 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=8850, Invalid=52406, Unknown=0, NotChecked=0, Total=61256 [2023-11-29 07:02:40,584 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 24708 mSDsluCounter, 32234 mSDsCounter, 0 mSdLazyCounter, 5535 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24708 SdHoareTripleChecker+Valid, 33882 SdHoareTripleChecker+Invalid, 5841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 5535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:02:40,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24708 Valid, 33882 Invalid, 5841 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [306 Valid, 5535 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-29 07:02:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87063 states. [2023-11-29 07:02:50,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87063 to 48504. [2023-11-29 07:02:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48504 states, 48502 states have (on average 1.2118263164405592) internal successors, (58776), 48503 states have internal predecessors, (58776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48504 states to 48504 states and 58776 transitions. [2023-11-29 07:02:50,637 INFO L78 Accepts]: Start accepts. Automaton has 48504 states and 58776 transitions. Word has length 116 [2023-11-29 07:02:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:02:50,638 INFO L495 AbstractCegarLoop]: Abstraction has 48504 states and 58776 transitions. [2023-11-29 07:02:50,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 48504 states and 58776 transitions. [2023-11-29 07:02:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 07:02:50,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:02:50,642 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:50,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:02:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:50,843 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:02:50,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1516639257, now seen corresponding path program 1 times [2023-11-29 07:02:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:50,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114682519] [2023-11-29 07:02:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:50,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:02:54,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:54,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114682519] [2023-11-29 07:02:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114682519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:02:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474391447] [2023-11-29 07:02:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:02:54,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:02:54,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b6368a-8200-467e-8ae1-d9c4f7f9a5c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:02:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:54,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 07:02:54,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:03:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:03:07,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:03:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:03:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474391447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:03:20,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:03:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 33] total 96 [2023-11-29 07:03:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322410171] [2023-11-29 07:03:20,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:03:20,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-29 07:03:20,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-29 07:03:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=8317, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 07:03:20,254 INFO L87 Difference]: Start difference. First operand 48504 states and 58776 transitions. Second operand has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)