./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd --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 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:07:05,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:07:05,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:07:05,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:07:05,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:07:06,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:07:06,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:07:06,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:07:06,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:07:06,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:07:06,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:07:06,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:07:06,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:07:06,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:07:06,014 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:07:06,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:07:06,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:07:06,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:07:06,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:06,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:07:06,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:07:06,019 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd 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 -> 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 [2024-11-13 14:07:06,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:07:06,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:07:06,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:07:06,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:07:06,428 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:07:06,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c Unable to find full path for "g++" [2024-11-13 14:07:08,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:07:09,525 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:07:09,527 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-13 14:07:09,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/data/eacf0b2aa/05ebcc80447d4aa9bcdb46643664731b/FLAG74b2d9295 [2024-11-13 14:07:09,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/data/eacf0b2aa/05ebcc80447d4aa9bcdb46643664731b [2024-11-13 14:07:09,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:07:09,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:07:09,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:09,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:07:09,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:07:09,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:09" (1/1) ... [2024-11-13 14:07:09,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637e7655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:09, skipping insertion in model container [2024-11-13 14:07:09,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:09" (1/1) ... [2024-11-13 14:07:09,764 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:07:10,180 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2024-11-13 14:07:10,271 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2024-11-13 14:07:11,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:11,383 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:07:11,437 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2024-11-13 14:07:11,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2024-11-13 14:07:12,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:12,158 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:07:12,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12 WrapperNode [2024-11-13 14:07:12,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:12,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:12,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:07:12,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:07:12,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:12,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:12,717 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4979 [2024-11-13 14:07:12,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:12,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:07:12,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:07:12,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:07:12,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:12,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:12,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,115 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]. [2024-11-13 14:07:13,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:07:13,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:07:13,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:07:13,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:07:13,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (1/1) ... [2024-11-13 14:07:13,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:13,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:13,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:07:13,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:07:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:07:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:07:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:07:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:07:13,941 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:07:13,944 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:07:21,359 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-13 14:07:21,360 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:07:21,402 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:07:21,402 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:07:21,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:21 BoogieIcfgContainer [2024-11-13 14:07:21,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:07:21,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:07:21,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:07:21,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:07:21,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:07:09" (1/3) ... [2024-11-13 14:07:21,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ffcdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:21, skipping insertion in model container [2024-11-13 14:07:21,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:12" (2/3) ... [2024-11-13 14:07:21,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ffcdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:21, skipping insertion in model container [2024-11-13 14:07:21,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:21" (3/3) ... [2024-11-13 14:07:21,416 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-13 14:07:21,436 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:07:21,439 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c that has 1 procedures, 872 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 14:07:21,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:07:21,587 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ed8327b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:07:21,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 14:07:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:07:21,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:21,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:21,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:21,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -525248019, now seen corresponding path program 1 times [2024-11-13 14:07:21,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503663740] [2024-11-13 14:07:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:21,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503663740] [2024-11-13 14:07:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503663740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:21,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:21,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:07:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525093210] [2024-11-13 14:07:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:21,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:07:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:07:22,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:07:22,018 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:22,127 INFO L93 Difference]: Finished difference Result 1720 states and 3272 transitions. [2024-11-13 14:07:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:07:22,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-11-13 14:07:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:22,151 INFO L225 Difference]: With dead ends: 1720 [2024-11-13 14:07:22,152 INFO L226 Difference]: Without dead ends: 806 [2024-11-13 14:07:22,158 INFO L431 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 [2024-11-13 14:07:22,161 INFO L432 NwaCegarLoop]: 1588 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:22,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-13 14:07:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-13 14:07:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2024-11-13 14:07:22,308 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2024-11-13 14:07:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:22,309 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2024-11-13 14:07:22,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2024-11-13 14:07:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:07:22,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:22,311 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:22,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:07:22,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:22,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1536365269, now seen corresponding path program 1 times [2024-11-13 14:07:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:22,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151124626] [2024-11-13 14:07:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:22,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:22,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151124626] [2024-11-13 14:07:22,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151124626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:22,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:22,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:22,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352632735] [2024-11-13 14:07:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:22,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:22,682 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:22,875 INFO L93 Difference]: Finished difference Result 840 states and 1575 transitions. [2024-11-13 14:07:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-13 14:07:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:22,884 INFO L225 Difference]: With dead ends: 840 [2024-11-13 14:07:22,884 INFO L226 Difference]: Without dead ends: 806 [2024-11-13 14:07:22,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:22,887 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:22,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6067 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-13 14:07:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-13 14:07:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2024-11-13 14:07:22,936 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2024-11-13 14:07:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:22,937 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2024-11-13 14:07:22,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2024-11-13 14:07:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:07:22,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:22,939 INFO L215 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] [2024-11-13 14:07:22,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:07:22,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:22,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1635755491, now seen corresponding path program 1 times [2024-11-13 14:07:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673257383] [2024-11-13 14:07:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:23,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673257383] [2024-11-13 14:07:23,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673257383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:23,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:23,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:23,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463595492] [2024-11-13 14:07:23,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:23,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:23,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:23,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:23,265 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:23,492 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2024-11-13 14:07:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:07:23,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-11-13 14:07:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:23,499 INFO L225 Difference]: With dead ends: 986 [2024-11-13 14:07:23,501 INFO L226 Difference]: Without dead ends: 956 [2024-11-13 14:07:23,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:07:23,504 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:23,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-13 14:07:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2024-11-13 14:07:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2024-11-13 14:07:23,545 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2024-11-13 14:07:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:23,550 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2024-11-13 14:07:23,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2024-11-13 14:07:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:07:23,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:23,553 INFO L215 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] [2024-11-13 14:07:23,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:07:23,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:23,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:23,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1412704845, now seen corresponding path program 1 times [2024-11-13 14:07:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725870590] [2024-11-13 14:07:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725870590] [2024-11-13 14:07:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725870590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272755582] [2024-11-13 14:07:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:23,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:23,800 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:23,862 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2024-11-13 14:07:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-11-13 14:07:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:23,870 INFO L225 Difference]: With dead ends: 939 [2024-11-13 14:07:23,870 INFO L226 Difference]: Without dead ends: 881 [2024-11-13 14:07:23,872 INFO L431 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 [2024-11-13 14:07:23,873 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 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 [2024-11-13 14:07:23,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-13 14:07:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-13 14:07:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-11-13 14:07:23,921 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2024-11-13 14:07:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:23,922 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-11-13 14:07:23,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-11-13 14:07:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:07:23,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:23,928 INFO L215 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] [2024-11-13 14:07:23,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:07:23,929 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:23,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1346211333, now seen corresponding path program 1 times [2024-11-13 14:07:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836808764] [2024-11-13 14:07:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836808764] [2024-11-13 14:07:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836808764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:24,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:24,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398750724] [2024-11-13 14:07:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:24,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:24,302 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:24,445 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2024-11-13 14:07:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:24,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2024-11-13 14:07:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:24,451 INFO L225 Difference]: With dead ends: 984 [2024-11-13 14:07:24,451 INFO L226 Difference]: Without dead ends: 881 [2024-11-13 14:07:24,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:07:24,453 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:24,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-13 14:07:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-13 14:07:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2024-11-13 14:07:24,492 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2024-11-13 14:07:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:24,494 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2024-11-13 14:07:24,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2024-11-13 14:07:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:07:24,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:24,495 INFO L215 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] [2024-11-13 14:07:24,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:07:24,496 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:24,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash 802398415, now seen corresponding path program 1 times [2024-11-13 14:07:24,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:24,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543198108] [2024-11-13 14:07:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:25,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:25,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543198108] [2024-11-13 14:07:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543198108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:25,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:07:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749516100] [2024-11-13 14:07:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:25,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:07:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:07:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:07:25,015 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:25,177 INFO L93 Difference]: Finished difference Result 887 states and 1627 transitions. [2024-11-13 14:07:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:07:25,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2024-11-13 14:07:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:25,187 INFO L225 Difference]: With dead ends: 887 [2024-11-13 14:07:25,187 INFO L226 Difference]: Without dead ends: 885 [2024-11-13 14:07:25,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:07:25,190 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 0 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10501 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:25,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10501 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-13 14:07:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-11-13 14:07:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2024-11-13 14:07:25,237 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2024-11-13 14:07:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:25,238 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2024-11-13 14:07:25,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2024-11-13 14:07:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:07:25,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:25,241 INFO L215 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] [2024-11-13 14:07:25,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:07:25,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:25,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash 980111963, now seen corresponding path program 1 times [2024-11-13 14:07:25,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:25,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428879863] [2024-11-13 14:07:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428879863] [2024-11-13 14:07:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428879863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:25,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937223986] [2024-11-13 14:07:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:25,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:25,364 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:25,422 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2024-11-13 14:07:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-13 14:07:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:25,429 INFO L225 Difference]: With dead ends: 1007 [2024-11-13 14:07:25,429 INFO L226 Difference]: Without dead ends: 943 [2024-11-13 14:07:25,431 INFO L431 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 [2024-11-13 14:07:25,432 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:25,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-13 14:07:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2024-11-13 14:07:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2024-11-13 14:07:25,483 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2024-11-13 14:07:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:25,483 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2024-11-13 14:07:25,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2024-11-13 14:07:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:07:25,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:25,485 INFO L215 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] [2024-11-13 14:07:25,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:07:25,486 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:25,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1235356837, now seen corresponding path program 1 times [2024-11-13 14:07:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696022237] [2024-11-13 14:07:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:25,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696022237] [2024-11-13 14:07:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696022237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219619013] [2024-11-13 14:07:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:25,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:25,594 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:25,654 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2024-11-13 14:07:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:25,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-13 14:07:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:25,663 INFO L225 Difference]: With dead ends: 1243 [2024-11-13 14:07:25,663 INFO L226 Difference]: Without dead ends: 1080 [2024-11-13 14:07:25,664 INFO L431 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 [2024-11-13 14:07:25,665 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:25,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-13 14:07:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2024-11-13 14:07:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2024-11-13 14:07:25,718 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2024-11-13 14:07:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:25,719 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2024-11-13 14:07:25,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2024-11-13 14:07:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:07:25,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:25,722 INFO L215 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] [2024-11-13 14:07:25,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:07:25,722 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:25,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash 545576027, now seen corresponding path program 1 times [2024-11-13 14:07:25,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:25,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481517006] [2024-11-13 14:07:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:25,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:25,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481517006] [2024-11-13 14:07:25,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481517006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:25,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:25,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892478406] [2024-11-13 14:07:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:25,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:25,823 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:25,894 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2024-11-13 14:07:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:25,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-13 14:07:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:25,903 INFO L225 Difference]: With dead ends: 1630 [2024-11-13 14:07:25,903 INFO L226 Difference]: Without dead ends: 1330 [2024-11-13 14:07:25,904 INFO L431 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 [2024-11-13 14:07:25,906 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:25,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-13 14:07:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2024-11-13 14:07:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2024-11-13 14:07:25,967 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2024-11-13 14:07:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:25,968 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2024-11-13 14:07:25,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2024-11-13 14:07:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:07:25,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:25,971 INFO L215 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] [2024-11-13 14:07:25,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:07:25,971 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:25,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -83565524, now seen corresponding path program 1 times [2024-11-13 14:07:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437671405] [2024-11-13 14:07:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:07:26,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:26,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437671405] [2024-11-13 14:07:26,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437671405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:26,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:26,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675751182] [2024-11-13 14:07:26,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:26,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:26,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:26,209 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:26,394 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2024-11-13 14:07:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 54 [2024-11-13 14:07:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:26,407 INFO L225 Difference]: With dead ends: 2960 [2024-11-13 14:07:26,407 INFO L226 Difference]: Without dead ends: 2558 [2024-11-13 14:07:26,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:26,410 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3039 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:26,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-13 14:07:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2024-11-13 14:07:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2024-11-13 14:07:26,500 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2024-11-13 14:07:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:26,501 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2024-11-13 14:07:26,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2024-11-13 14:07:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:07:26,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:26,502 INFO L215 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] [2024-11-13 14:07:26,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:07:26,503 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:26,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1995932972, now seen corresponding path program 1 times [2024-11-13 14:07:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151576794] [2024-11-13 14:07:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:07:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151576794] [2024-11-13 14:07:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151576794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827240557] [2024-11-13 14:07:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:26,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:26,701 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:26,877 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2024-11-13 14:07:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2024-11-13 14:07:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:26,892 INFO L225 Difference]: With dead ends: 3508 [2024-11-13 14:07:26,892 INFO L226 Difference]: Without dead ends: 2958 [2024-11-13 14:07:26,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:26,896 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:26,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2024-11-13 14:07:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2024-11-13 14:07:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2024-11-13 14:07:27,070 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2024-11-13 14:07:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:27,071 INFO L471 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2024-11-13 14:07:27,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2024-11-13 14:07:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:07:27,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:27,073 INFO L215 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] [2024-11-13 14:07:27,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:07:27,074 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:27,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash -518101460, now seen corresponding path program 1 times [2024-11-13 14:07:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:27,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221709102] [2024-11-13 14:07:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:27,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:07:27,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:27,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221709102] [2024-11-13 14:07:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221709102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:27,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:07:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675741873] [2024-11-13 14:07:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:27,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:07:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:07:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:07:27,268 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:27,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:27,462 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2024-11-13 14:07:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:07:27,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 54 [2024-11-13 14:07:27,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:27,478 INFO L225 Difference]: With dead ends: 4056 [2024-11-13 14:07:27,479 INFO L226 Difference]: Without dead ends: 3506 [2024-11-13 14:07:27,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:07:27,482 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:27,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:07:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-11-13 14:07:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2024-11-13 14:07:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2024-11-13 14:07:27,619 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2024-11-13 14:07:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:27,619 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2024-11-13 14:07:27,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2024-11-13 14:07:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:07:27,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:27,626 INFO L215 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] [2024-11-13 14:07:27,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:07:27,626 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:27,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:27,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1695590575, now seen corresponding path program 1 times [2024-11-13 14:07:27,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:27,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747185922] [2024-11-13 14:07:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:27,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747185922] [2024-11-13 14:07:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747185922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:27,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504180149] [2024-11-13 14:07:27,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:27,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:27,774 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:27,881 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2024-11-13 14:07:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:27,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-11-13 14:07:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:27,896 INFO L225 Difference]: With dead ends: 5424 [2024-11-13 14:07:27,896 INFO L226 Difference]: Without dead ends: 3102 [2024-11-13 14:07:27,899 INFO L431 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 [2024-11-13 14:07:27,901 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:27,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-11-13 14:07:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2024-11-13 14:07:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2024-11-13 14:07:28,034 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2024-11-13 14:07:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:28,035 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2024-11-13 14:07:28,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2024-11-13 14:07:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:07:28,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:28,037 INFO L215 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] [2024-11-13 14:07:28,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:07:28,038 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:28,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1186964228, now seen corresponding path program 1 times [2024-11-13 14:07:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214615109] [2024-11-13 14:07:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:28,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:28,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214615109] [2024-11-13 14:07:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214615109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:28,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933541789] [2024-11-13 14:07:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:28,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:28,178 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2024-11-13 14:07:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:28,308 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2024-11-13 14:07:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:28,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 56 [2024-11-13 14:07:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:28,316 INFO L225 Difference]: With dead ends: 4019 [2024-11-13 14:07:28,316 INFO L226 Difference]: Without dead ends: 1697 [2024-11-13 14:07:28,318 INFO L431 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 [2024-11-13 14:07:28,319 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:28,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-13 14:07:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2024-11-13 14:07:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2024-11-13 14:07:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2024-11-13 14:07:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:28,382 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2024-11-13 14:07:28,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2024-11-13 14:07:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2024-11-13 14:07:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:07:28,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:28,383 INFO L215 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] [2024-11-13 14:07:28,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:07:28,384 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:28,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash -80577215, now seen corresponding path program 1 times [2024-11-13 14:07:28,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222338792] [2024-11-13 14:07:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:28,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222338792] [2024-11-13 14:07:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222338792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:28,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:28,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:28,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214932833] [2024-11-13 14:07:28,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:28,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:28,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:28,517 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:28,569 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2024-11-13 14:07:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-11-13 14:07:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:28,582 INFO L225 Difference]: With dead ends: 2143 [2024-11-13 14:07:28,583 INFO L226 Difference]: Without dead ends: 1241 [2024-11-13 14:07:28,584 INFO L431 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 [2024-11-13 14:07:28,589 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:28,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-11-13 14:07:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2024-11-13 14:07:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2024-11-13 14:07:28,647 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2024-11-13 14:07:28,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:28,647 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2024-11-13 14:07:28,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2024-11-13 14:07:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 14:07:28,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:28,648 INFO L215 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] [2024-11-13 14:07:28,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:07:28,649 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:28,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash 487452755, now seen corresponding path program 1 times [2024-11-13 14:07:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:28,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227300877] [2024-11-13 14:07:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:31,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:31,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227300877] [2024-11-13 14:07:31,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227300877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:31,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724789252] [2024-11-13 14:07:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:31,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:31,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:31,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:31,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:07:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:31,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:07:31,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:07:31,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:07:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724789252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:32,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-13 14:07:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598141998] [2024-11-13 14:07:32,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:32,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:07:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:07:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:07:32,164 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:35,492 INFO L93 Difference]: Finished difference Result 3541 states and 5099 transitions. [2024-11-13 14:07:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 14:07:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 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 [2024-11-13 14:07:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:35,511 INFO L225 Difference]: With dead ends: 3541 [2024-11-13 14:07:35,511 INFO L226 Difference]: Without dead ends: 3089 [2024-11-13 14:07:35,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:07:35,518 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 15728 mSDsluCounter, 7675 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15728 SdHoareTripleChecker+Valid, 9170 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:35,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15728 Valid, 9170 Invalid, 711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:07:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2024-11-13 14:07:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 2971. [2024-11-13 14:07:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.4277534523408555) internal successors, (4239), 2970 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4239 transitions. [2024-11-13 14:07:35,696 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4239 transitions. Word has length 59 [2024-11-13 14:07:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:35,697 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4239 transitions. [2024-11-13 14:07:35,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4239 transitions. [2024-11-13 14:07:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:07:35,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:35,699 INFO L215 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] [2024-11-13 14:07:35,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:07:35,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:07:35,901 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:35,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash -836933920, now seen corresponding path program 1 times [2024-11-13 14:07:35,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:35,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146047991] [2024-11-13 14:07:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:35,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146047991] [2024-11-13 14:07:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146047991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:38,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744153305] [2024-11-13 14:07:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:38,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:38,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:38,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:38,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:07:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:38,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:07:38,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:39,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744153305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:40,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-13 14:07:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303236109] [2024-11-13 14:07:40,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:40,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:07:40,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:07:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:07:40,525 INFO L87 Difference]: Start difference. First operand 2971 states and 4239 transitions. Second operand has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:41,486 INFO L93 Difference]: Finished difference Result 6894 states and 9256 transitions. [2024-11-13 14:07:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:07:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 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 60 [2024-11-13 14:07:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:41,505 INFO L225 Difference]: With dead ends: 6894 [2024-11-13 14:07:41,505 INFO L226 Difference]: Without dead ends: 5105 [2024-11-13 14:07:41,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:07:41,509 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 15174 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15174 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:41,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15174 Valid, 4762 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:07:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2024-11-13 14:07:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 5039. [2024-11-13 14:07:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 5037 states have (on average 1.345245185626365) internal successors, (6776), 5038 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 6776 transitions. [2024-11-13 14:07:41,741 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 6776 transitions. Word has length 60 [2024-11-13 14:07:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:41,741 INFO L471 AbstractCegarLoop]: Abstraction has 5039 states and 6776 transitions. [2024-11-13 14:07:41,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 6776 transitions. [2024-11-13 14:07:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:07:41,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:41,742 INFO L215 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] [2024-11-13 14:07:41,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:07:41,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:07:41,943 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:41,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash -148796334, now seen corresponding path program 1 times [2024-11-13 14:07:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:41,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554772188] [2024-11-13 14:07:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:42,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554772188] [2024-11-13 14:07:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554772188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328061436] [2024-11-13 14:07:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:42,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:42,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:07:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:42,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 14:07:42,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:44,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:07:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328061436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:47,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:47,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 16] total 38 [2024-11-13 14:07:47,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681397995] [2024-11-13 14:07:47,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:47,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 14:07:47,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 14:07:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:07:47,206 INFO L87 Difference]: Start difference. First operand 5039 states and 6776 transitions. Second operand has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:15,727 INFO L93 Difference]: Finished difference Result 15921 states and 20643 transitions. [2024-11-13 14:08:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-13 14:08:15,728 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 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 60 [2024-11-13 14:08:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:15,751 INFO L225 Difference]: With dead ends: 15921 [2024-11-13 14:08:15,751 INFO L226 Difference]: Without dead ends: 11980 [2024-11-13 14:08:15,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11487 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=5606, Invalid=24844, Unknown=0, NotChecked=0, Total=30450 [2024-11-13 14:08:15,764 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 16292 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16292 SdHoareTripleChecker+Valid, 19311 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:15,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16292 Valid, 19311 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 14:08:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2024-11-13 14:08:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 9110. [2024-11-13 14:08:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9110 states, 9108 states have (on average 1.3072024593763725) internal successors, (11906), 9109 states have internal predecessors, (11906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 11906 transitions. [2024-11-13 14:08:16,262 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 11906 transitions. Word has length 60 [2024-11-13 14:08:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:16,262 INFO L471 AbstractCegarLoop]: Abstraction has 9110 states and 11906 transitions. [2024-11-13 14:08:16,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 11906 transitions. [2024-11-13 14:08:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:08:16,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:16,264 INFO L215 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] [2024-11-13 14:08:16,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:08:16,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:08:16,468 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:16,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:16,469 INFO L85 PathProgramCache]: Analyzing trace with hash -735363553, now seen corresponding path program 1 times [2024-11-13 14:08:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:16,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148752034] [2024-11-13 14:08:16,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:16,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:16,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:16,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148752034] [2024-11-13 14:08:16,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148752034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:16,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862592196] [2024-11-13 14:08:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:16,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:16,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:16,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:08:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:17,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 14:08:17,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:18,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:19,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862592196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:19,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:19,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-13 14:08:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619164187] [2024-11-13 14:08:19,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:19,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:08:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:08:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:08:19,852 INFO L87 Difference]: Start difference. First operand 9110 states and 11906 transitions. Second operand has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:22,046 INFO L93 Difference]: Finished difference Result 18270 states and 23432 transitions. [2024-11-13 14:08:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 14:08:22,047 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 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 [2024-11-13 14:08:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:22,068 INFO L225 Difference]: With dead ends: 18270 [2024-11-13 14:08:22,068 INFO L226 Difference]: Without dead ends: 10620 [2024-11-13 14:08:22,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=628, Invalid=2024, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 14:08:22,076 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 16831 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16831 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:22,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16831 Valid, 6515 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:08:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2024-11-13 14:08:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 10152. [2024-11-13 14:08:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10152 states, 10150 states have (on average 1.2829556650246305) internal successors, (13022), 10151 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 13022 transitions. [2024-11-13 14:08:22,618 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 13022 transitions. Word has length 61 [2024-11-13 14:08:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:22,618 INFO L471 AbstractCegarLoop]: Abstraction has 10152 states and 13022 transitions. [2024-11-13 14:08:22,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 13022 transitions. [2024-11-13 14:08:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:08:22,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:22,620 INFO L215 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] [2024-11-13 14:08:22,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:08:22,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:22,824 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:22,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:22,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1802207024, now seen corresponding path program 1 times [2024-11-13 14:08:22,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:22,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333428973] [2024-11-13 14:08:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:23,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:23,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333428973] [2024-11-13 14:08:23,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333428973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:23,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673504412] [2024-11-13 14:08:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:23,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:23,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:23,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:08:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:24,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:08:24,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:26,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:30,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673504412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:30,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:30,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 16] total 45 [2024-11-13 14:08:30,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547036271] [2024-11-13 14:08:30,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:30,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 14:08:30,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 14:08:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 14:08:30,224 INFO L87 Difference]: Start difference. First operand 10152 states and 13022 transitions. Second operand has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:45,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:45,238 INFO L93 Difference]: Finished difference Result 15852 states and 20164 transitions. [2024-11-13 14:08:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-13 14:08:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 states have internal predecessors, (166), 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 [2024-11-13 14:08:45,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:45,266 INFO L225 Difference]: With dead ends: 15852 [2024-11-13 14:08:45,267 INFO L226 Difference]: Without dead ends: 10736 [2024-11-13 14:08:45,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3777 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=2761, Invalid=11281, Unknown=0, NotChecked=0, Total=14042 [2024-11-13 14:08:45,277 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 17444 mSDsluCounter, 24485 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17444 SdHoareTripleChecker+Valid, 26011 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:45,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17444 Valid, 26011 Invalid, 1900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:08:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2024-11-13 14:08:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 8486. [2024-11-13 14:08:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8484 states have (on average 1.2899575671852899) internal successors, (10944), 8485 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 10944 transitions. [2024-11-13 14:08:45,938 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 10944 transitions. Word has length 62 [2024-11-13 14:08:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:45,938 INFO L471 AbstractCegarLoop]: Abstraction has 8486 states and 10944 transitions. [2024-11-13 14:08:45,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 10944 transitions. [2024-11-13 14:08:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 14:08:45,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:45,940 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:45,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:46,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:46,141 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:46,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1391143477, now seen corresponding path program 1 times [2024-11-13 14:08:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088675221] [2024-11-13 14:08:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:46,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:46,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088675221] [2024-11-13 14:08:46,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088675221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:46,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:46,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:08:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314442094] [2024-11-13 14:08:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:46,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:08:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:08:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:46,301 INFO L87 Difference]: Start difference. First operand 8486 states and 10944 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:55,271 INFO L93 Difference]: Finished difference Result 10741 states and 15253 transitions. [2024-11-13 14:08:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:08:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2024-11-13 14:08:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:55,278 INFO L225 Difference]: With dead ends: 10741 [2024-11-13 14:08:55,278 INFO L226 Difference]: Without dead ends: 9988 [2024-11-13 14:08:55,279 INFO L431 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 [2024-11-13 14:08:55,280 INFO L432 NwaCegarLoop]: 744 mSDtfsCounter, 2317 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:55,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 762 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-13 14:08:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9988 states. [2024-11-13 14:08:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9988 to 9988. [2024-11-13 14:08:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9988 states, 9986 states have (on average 1.3076306829561386) internal successors, (13058), 9987 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 13058 transitions. [2024-11-13 14:08:55,808 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 13058 transitions. Word has length 67 [2024-11-13 14:08:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:55,808 INFO L471 AbstractCegarLoop]: Abstraction has 9988 states and 13058 transitions. [2024-11-13 14:08:55,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 13058 transitions. [2024-11-13 14:08:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 14:08:55,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:55,811 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:55,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 14:08:55,811 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:08:55,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:55,812 INFO L85 PathProgramCache]: Analyzing trace with hash -613887870, now seen corresponding path program 1 times [2024-11-13 14:08:55,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:55,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020379238] [2024-11-13 14:08:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:56,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020379238] [2024-11-13 14:08:56,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020379238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663638222] [2024-11-13 14:08:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:56,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:56,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:56,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:08:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:56,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:08:57,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:57,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663638222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:59,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:59,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2024-11-13 14:08:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104623224] [2024-11-13 14:08:59,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:59,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 14:08:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 14:08:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 14:08:59,712 INFO L87 Difference]: Start difference. First operand 9988 states and 13058 transitions. Second operand has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:09:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:10,679 INFO L93 Difference]: Finished difference Result 28814 states and 36255 transitions. [2024-11-13 14:09:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-13 14:09:10,679 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 states have internal predecessors, (269), 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 100 [2024-11-13 14:09:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:10,699 INFO L225 Difference]: With dead ends: 28814 [2024-11-13 14:09:10,699 INFO L226 Difference]: Without dead ends: 22797 [2024-11-13 14:09:10,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5353 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3030, Invalid=15060, Unknown=0, NotChecked=0, Total=18090 [2024-11-13 14:09:10,708 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 20433 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20433 SdHoareTripleChecker+Valid, 19288 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:10,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20433 Valid, 19288 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 14:09:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22797 states. [2024-11-13 14:09:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22797 to 13367. [2024-11-13 14:09:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13367 states, 13365 states have (on average 1.2794612794612794) internal successors, (17100), 13366 states have internal predecessors, (17100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:09:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 17100 transitions. [2024-11-13 14:09:11,624 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 17100 transitions. Word has length 100 [2024-11-13 14:09:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:11,624 INFO L471 AbstractCegarLoop]: Abstraction has 13367 states and 17100 transitions. [2024-11-13 14:09:11,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:09:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 17100 transitions. [2024-11-13 14:09:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 14:09:11,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:11,628 INFO L215 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] [2024-11-13 14:09:11,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:09:11,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 14:09:11,829 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:09:11,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 243139955, now seen corresponding path program 1 times [2024-11-13 14:09:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:09:11,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22334565] [2024-11-13 14:09:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:09:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:09:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22334565] [2024-11-13 14:09:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22334565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:09:13,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216513639] [2024-11-13 14:09:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:13,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:13,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:13,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:13,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:09:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:13,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 14:09:13,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:18,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:09:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216513639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:09:26,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:09:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 25] total 69 [2024-11-13 14:09:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876542235] [2024-11-13 14:09:26,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:09:26,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 14:09:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:09:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 14:09:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4305, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 14:09:26,025 INFO L87 Difference]: Start difference. First operand 13367 states and 17100 transitions. Second operand has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:12:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:12:52,981 INFO L93 Difference]: Finished difference Result 65545 states and 80558 transitions. [2024-11-13 14:12:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 372 states. [2024-11-13 14:12:52,981 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 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 101 [2024-11-13 14:12:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:12:53,037 INFO L225 Difference]: With dead ends: 65545 [2024-11-13 14:12:53,037 INFO L226 Difference]: Without dead ends: 57198 [2024-11-13 14:12:53,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80016 ImplicationChecksByTransitivity, 197.0s TimeCoverageRelationStatistics Valid=24221, Invalid=166311, Unknown=0, NotChecked=0, Total=190532 [2024-11-13 14:12:53,065 INFO L432 NwaCegarLoop]: 1718 mSDtfsCounter, 28027 mSDsluCounter, 39278 mSDsCounter, 0 mSdLazyCounter, 7039 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28027 SdHoareTripleChecker+Valid, 40996 SdHoareTripleChecker+Invalid, 7413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:12:53,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28027 Valid, 40996 Invalid, 7413 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [374 Valid, 7039 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2024-11-13 14:12:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57198 states. [2024-11-13 14:12:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57198 to 17489. [2024-11-13 14:12:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17489 states, 17487 states have (on average 1.2637387773774804) internal successors, (22099), 17488 states have internal predecessors, (22099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:12:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17489 states to 17489 states and 22099 transitions. [2024-11-13 14:12:55,032 INFO L78 Accepts]: Start accepts. Automaton has 17489 states and 22099 transitions. Word has length 101 [2024-11-13 14:12:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:12:55,032 INFO L471 AbstractCegarLoop]: Abstraction has 17489 states and 22099 transitions. [2024-11-13 14:12:55,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:12:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 17489 states and 22099 transitions. [2024-11-13 14:12:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 14:12:55,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:12:55,036 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:55,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:12:55,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:55,240 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:12:55,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash -604508559, now seen corresponding path program 1 times [2024-11-13 14:12:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700477017] [2024-11-13 14:12:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700477017] [2024-11-13 14:12:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700477017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745534380] [2024-11-13 14:12:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:56,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:56,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:56,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:56,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:12:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:56,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:12:56,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:59,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745534380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:02,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:02,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-11-13 14:13:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71298981] [2024-11-13 14:13:02,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:02,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 14:13:02,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 14:13:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 14:13:02,906 INFO L87 Difference]: Start difference. First operand 17489 states and 22099 transitions. Second operand has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:26,449 INFO L93 Difference]: Finished difference Result 35503 states and 44148 transitions. [2024-11-13 14:13:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-13 14:13:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 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 101 [2024-11-13 14:13:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:26,476 INFO L225 Difference]: With dead ends: 35503 [2024-11-13 14:13:26,476 INFO L226 Difference]: Without dead ends: 25190 [2024-11-13 14:13:26,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=3447, Invalid=18015, Unknown=0, NotChecked=0, Total=21462 [2024-11-13 14:13:26,485 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 30870 mSDsluCounter, 24067 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30870 SdHoareTripleChecker+Valid, 25625 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:26,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30870 Valid, 25625 Invalid, 2735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 14:13:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25190 states. [2024-11-13 14:13:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25190 to 18618. [2024-11-13 14:13:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18618 states, 18616 states have (on average 1.2628384185646755) internal successors, (23509), 18617 states have internal predecessors, (23509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18618 states to 18618 states and 23509 transitions. [2024-11-13 14:13:28,407 INFO L78 Accepts]: Start accepts. Automaton has 18618 states and 23509 transitions. Word has length 101 [2024-11-13 14:13:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:28,407 INFO L471 AbstractCegarLoop]: Abstraction has 18618 states and 23509 transitions. [2024-11-13 14:13:28,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 18618 states and 23509 transitions. [2024-11-13 14:13:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 14:13:28,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:28,410 INFO L215 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] [2024-11-13 14:13:28,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:13:28,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:13:28,615 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:28,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash 941958187, now seen corresponding path program 1 times [2024-11-13 14:13:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177009835] [2024-11-13 14:13:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:13:29,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177009835] [2024-11-13 14:13:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177009835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451801178] [2024-11-13 14:13:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:29,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:29,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:29,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:13:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:29,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:13:29,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:30,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:32,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451801178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:32,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:32,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-13 14:13:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27714111] [2024-11-13 14:13:32,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:32,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:13:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:13:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:13:32,597 INFO L87 Difference]: Start difference. First operand 18618 states and 23509 transitions. Second operand has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 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) [2024-11-13 14:13:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:37,870 INFO L93 Difference]: Finished difference Result 38428 states and 47858 transitions. [2024-11-13 14:13:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 14:13:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 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 101 [2024-11-13 14:13:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:37,889 INFO L225 Difference]: With dead ends: 38428 [2024-11-13 14:13:37,890 INFO L226 Difference]: Without dead ends: 25759 [2024-11-13 14:13:37,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=780, Invalid=2880, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 14:13:37,898 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 14065 mSDsluCounter, 14141 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14065 SdHoareTripleChecker+Valid, 15668 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:37,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14065 Valid, 15668 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:13:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25759 states. [2024-11-13 14:13:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25759 to 16080. [2024-11-13 14:13:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 16078 states have (on average 1.2641497698718747) internal successors, (20325), 16079 states have internal predecessors, (20325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 20325 transitions. [2024-11-13 14:13:39,716 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 20325 transitions. Word has length 101 [2024-11-13 14:13:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:39,718 INFO L471 AbstractCegarLoop]: Abstraction has 16080 states and 20325 transitions. [2024-11-13 14:13:39,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 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) [2024-11-13 14:13:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 20325 transitions. [2024-11-13 14:13:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 14:13:39,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:39,725 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:39,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:13:39,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:39,925 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:39,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1401096274, now seen corresponding path program 1 times [2024-11-13 14:13:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488348457] [2024-11-13 14:13:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488348457] [2024-11-13 14:13:41,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488348457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190278735] [2024-11-13 14:13:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:41,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:41,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:41,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:13:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:41,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 14:13:41,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:46,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:52,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190278735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:52,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:52,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 24] total 68 [2024-11-13 14:13:52,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879925507] [2024-11-13 14:13:52,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:52,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 14:13:52,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 14:13:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=4178, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 14:13:52,525 INFO L87 Difference]: Start difference. First operand 16080 states and 20325 transitions. Second operand has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:46,615 INFO L93 Difference]: Finished difference Result 31819 states and 39384 transitions. [2024-11-13 14:15:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-11-13 14:15:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 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 102 [2024-11-13 14:15:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:46,632 INFO L225 Difference]: With dead ends: 31819 [2024-11-13 14:15:46,632 INFO L226 Difference]: Without dead ends: 22826 [2024-11-13 14:15:46,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25356 ImplicationChecksByTransitivity, 109.3s TimeCoverageRelationStatistics Valid=9867, Invalid=64389, Unknown=0, NotChecked=0, Total=74256 [2024-11-13 14:15:46,639 INFO L432 NwaCegarLoop]: 1650 mSDtfsCounter, 33417 mSDsluCounter, 39370 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33417 SdHoareTripleChecker+Valid, 41020 SdHoareTripleChecker+Invalid, 5773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:46,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33417 Valid, 41020 Invalid, 5773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [292 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 14:15:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22826 states. [2024-11-13 14:15:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22826 to 19112. [2024-11-13 14:15:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19112 states, 19110 states have (on average 1.2545787545787546) internal successors, (23975), 19111 states have internal predecessors, (23975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19112 states to 19112 states and 23975 transitions. [2024-11-13 14:15:48,561 INFO L78 Accepts]: Start accepts. Automaton has 19112 states and 23975 transitions. Word has length 102 [2024-11-13 14:15:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:48,562 INFO L471 AbstractCegarLoop]: Abstraction has 19112 states and 23975 transitions. [2024-11-13 14:15:48,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 19112 states and 23975 transitions. [2024-11-13 14:15:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 14:15:48,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:48,563 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:48,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:15:48,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:48,764 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:48,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:48,764 INFO L85 PathProgramCache]: Analyzing trace with hash 401407282, now seen corresponding path program 1 times [2024-11-13 14:15:48,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663958084] [2024-11-13 14:15:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:48,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663958084] [2024-11-13 14:15:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663958084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:15:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392460418] [2024-11-13 14:15:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:50,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:50,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:50,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:50,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:15:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:50,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 14:15:50,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:53,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:15:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392460418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:15:58,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:15:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 21] total 62 [2024-11-13 14:15:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177417873] [2024-11-13 14:15:58,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:15:58,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 14:15:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 14:15:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3392, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 14:15:58,532 INFO L87 Difference]: Start difference. First operand 19112 states and 23975 transitions. Second operand has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:20,733 INFO L93 Difference]: Finished difference Result 28535 states and 35349 transitions. [2024-11-13 14:16:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-13 14:16:20,734 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 states have internal predecessors, (267), 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 102 [2024-11-13 14:16:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:20,752 INFO L225 Difference]: With dead ends: 28535 [2024-11-13 14:16:20,752 INFO L226 Difference]: Without dead ends: 22732 [2024-11-13 14:16:20,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5867 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=3437, Invalid=18025, Unknown=0, NotChecked=0, Total=21462 [2024-11-13 14:16:20,759 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 10836 mSDsluCounter, 33294 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10836 SdHoareTripleChecker+Valid, 34863 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:20,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10836 Valid, 34863 Invalid, 2833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 14:16:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2024-11-13 14:16:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 20625. [2024-11-13 14:16:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20625 states, 20623 states have (on average 1.2486059254230713) internal successors, (25750), 20624 states have internal predecessors, (25750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20625 states to 20625 states and 25750 transitions. [2024-11-13 14:16:22,956 INFO L78 Accepts]: Start accepts. Automaton has 20625 states and 25750 transitions. Word has length 102 [2024-11-13 14:16:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:22,956 INFO L471 AbstractCegarLoop]: Abstraction has 20625 states and 25750 transitions. [2024-11-13 14:16:22,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 20625 states and 25750 transitions. [2024-11-13 14:16:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 14:16:22,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:22,958 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:22,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:16:23,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:23,159 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:23,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash 665496877, now seen corresponding path program 1 times [2024-11-13 14:16:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:23,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946875372] [2024-11-13 14:16:23,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:23,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946875372] [2024-11-13 14:16:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946875372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002707319] [2024-11-13 14:16:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:23,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:23,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:23,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:16:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:24,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 14:16:24,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:25,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:29,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002707319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:29,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:29,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2024-11-13 14:16:29,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359094706] [2024-11-13 14:16:29,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:29,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 14:16:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 14:16:29,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 14:16:29,039 INFO L87 Difference]: Start difference. First operand 20625 states and 25750 transitions. Second operand has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:41,306 INFO L93 Difference]: Finished difference Result 56694 states and 69916 transitions. [2024-11-13 14:16:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 14:16:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 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 103 [2024-11-13 14:16:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:41,335 INFO L225 Difference]: With dead ends: 56694 [2024-11-13 14:16:41,335 INFO L226 Difference]: Without dead ends: 40650 [2024-11-13 14:16:41,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2095 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1857, Invalid=7845, Unknown=0, NotChecked=0, Total=9702 [2024-11-13 14:16:41,343 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 27570 mSDsluCounter, 23574 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27570 SdHoareTripleChecker+Valid, 25127 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:41,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27570 Valid, 25127 Invalid, 1845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:16:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40650 states. [2024-11-13 14:16:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40650 to 21268. [2024-11-13 14:16:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 21266 states have (on average 1.2464497319665193) internal successors, (26507), 21267 states have internal predecessors, (26507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 26507 transitions. [2024-11-13 14:16:44,173 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 26507 transitions. Word has length 103 [2024-11-13 14:16:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:44,173 INFO L471 AbstractCegarLoop]: Abstraction has 21268 states and 26507 transitions. [2024-11-13 14:16:44,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 26507 transitions. [2024-11-13 14:16:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 14:16:44,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:44,175 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:44,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:16:44,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 14:16:44,375 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:44,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash -776924594, now seen corresponding path program 1 times [2024-11-13 14:16:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:44,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323758930] [2024-11-13 14:16:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:44,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323758930] [2024-11-13 14:16:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323758930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357640042] [2024-11-13 14:16:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:48,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:48,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:48,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:16:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:48,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 14:16:48,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:51,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:53,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357640042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:53,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:53,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 19, 18] total 63 [2024-11-13 14:16:53,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625521149] [2024-11-13 14:16:53,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:53,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 14:16:53,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:53,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 14:16:53,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3651, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 14:16:53,921 INFO L87 Difference]: Start difference. First operand 21268 states and 26507 transitions. Second operand has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:23,806 INFO L93 Difference]: Finished difference Result 35793 states and 44166 transitions. [2024-11-13 14:17:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-13 14:17:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 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 104 [2024-11-13 14:17:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:23,836 INFO L225 Difference]: With dead ends: 35793 [2024-11-13 14:17:23,836 INFO L226 Difference]: Without dead ends: 27194 [2024-11-13 14:17:23,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5790 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=3580, Invalid=18770, Unknown=0, NotChecked=0, Total=22350 [2024-11-13 14:17:23,846 INFO L432 NwaCegarLoop]: 1597 mSDtfsCounter, 24572 mSDsluCounter, 45669 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24572 SdHoareTripleChecker+Valid, 47266 SdHoareTripleChecker+Invalid, 4062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:23,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24572 Valid, 47266 Invalid, 4062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 14:17:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2024-11-13 14:17:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 24120. [2024-11-13 14:17:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24120 states, 24118 states have (on average 1.2413135417530474) internal successors, (29938), 24119 states have internal predecessors, (29938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24120 states to 24120 states and 29938 transitions. [2024-11-13 14:17:26,907 INFO L78 Accepts]: Start accepts. Automaton has 24120 states and 29938 transitions. Word has length 104 [2024-11-13 14:17:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:26,907 INFO L471 AbstractCegarLoop]: Abstraction has 24120 states and 29938 transitions. [2024-11-13 14:17:26,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand 24120 states and 29938 transitions. [2024-11-13 14:17:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 14:17:26,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:26,909 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:26,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:17:27,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:17:27,110 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:27,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2098754166, now seen corresponding path program 1 times [2024-11-13 14:17:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038796017] [2024-11-13 14:17:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:29,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038796017] [2024-11-13 14:17:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038796017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:17:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259686576] [2024-11-13 14:17:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:29,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:29,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:29,142 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:17:29,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:17:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:29,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 14:17:29,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:17:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:32,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:17:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 31 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259686576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:17:43,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:17:43,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 27] total 77 [2024-11-13 14:17:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836394236] [2024-11-13 14:17:43,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:17:43,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-13 14:17:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-13 14:17:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=5446, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 14:17:43,167 INFO L87 Difference]: Start difference. First operand 24120 states and 29938 transitions. Second operand has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:07,262 INFO L93 Difference]: Finished difference Result 43838 states and 53621 transitions. [2024-11-13 14:19:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-11-13 14:19:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 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 104 [2024-11-13 14:19:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:07,298 INFO L225 Difference]: With dead ends: 43838 [2024-11-13 14:19:07,298 INFO L226 Difference]: Without dead ends: 28770 [2024-11-13 14:19:07,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 156 SyntacticMatches, 4 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16626 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=7757, Invalid=45373, Unknown=0, NotChecked=0, Total=53130 [2024-11-13 14:19:07,311 INFO L432 NwaCegarLoop]: 1617 mSDtfsCounter, 38469 mSDsluCounter, 45406 mSDsCounter, 0 mSdLazyCounter, 6107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38469 SdHoareTripleChecker+Valid, 47023 SdHoareTripleChecker+Invalid, 6310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 6107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:07,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38469 Valid, 47023 Invalid, 6310 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [203 Valid, 6107 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-13 14:19:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28770 states. [2024-11-13 14:19:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28770 to 23432. [2024-11-13 14:19:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23432 states, 23430 states have (on average 1.2444302176696542) internal successors, (29157), 23431 states have internal predecessors, (29157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23432 states to 23432 states and 29157 transitions. [2024-11-13 14:19:10,664 INFO L78 Accepts]: Start accepts. Automaton has 23432 states and 29157 transitions. Word has length 104 [2024-11-13 14:19:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:10,665 INFO L471 AbstractCegarLoop]: Abstraction has 23432 states and 29157 transitions. [2024-11-13 14:19:10,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 23432 states and 29157 transitions. [2024-11-13 14:19:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-13 14:19:10,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:10,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 14:19:10,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:19:10,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:10,872 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:10,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1051579348, now seen corresponding path program 1 times [2024-11-13 14:19:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:10,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786243104] [2024-11-13 14:19:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786243104] [2024-11-13 14:19:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786243104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:11,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498563417] [2024-11-13 14:19:11,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:11,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:19:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:11,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:19:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:11,023 INFO L87 Difference]: Start difference. First operand 23432 states and 29157 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:18,704 INFO L93 Difference]: Finished difference Result 27226 states and 35520 transitions. [2024-11-13 14:19:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:19:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2024-11-13 14:19:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:18,722 INFO L225 Difference]: With dead ends: 27226 [2024-11-13 14:19:18,722 INFO L226 Difference]: Without dead ends: 24934 [2024-11-13 14:19:18,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:18,726 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 771 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:18,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 826 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 14:19:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24934 states. [2024-11-13 14:19:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24934 to 24183. [2024-11-13 14:19:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24183 states, 24181 states have (on average 1.2369215499772548) internal successors, (29910), 24182 states have internal predecessors, (29910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24183 states to 24183 states and 29910 transitions. [2024-11-13 14:19:22,124 INFO L78 Accepts]: Start accepts. Automaton has 24183 states and 29910 transitions. Word has length 138 [2024-11-13 14:19:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:22,124 INFO L471 AbstractCegarLoop]: Abstraction has 24183 states and 29910 transitions. [2024-11-13 14:19:22,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 24183 states and 29910 transitions. [2024-11-13 14:19:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 14:19:22,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:22,128 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:22,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-13 14:19:22,128 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:22,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1655527032, now seen corresponding path program 1 times [2024-11-13 14:19:22,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:22,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435069981] [2024-11-13 14:19:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:22,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 71 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:19:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435069981] [2024-11-13 14:19:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435069981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792810342] [2024-11-13 14:19:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:23,850 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:23,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:19:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:19:24,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 78 proven. 143 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 14:19:25,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 37 proven. 184 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 14:19:27,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792810342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:27,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:27,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 11] total 45 [2024-11-13 14:19:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8554351] [2024-11-13 14:19:27,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:27,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 14:19:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 14:19:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 14:19:27,696 INFO L87 Difference]: Start difference. First operand 24183 states and 29910 transitions. Second operand has 46 states, 46 states have (on average 7.760869565217392) internal successors, (357), 45 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:41,962 INFO L93 Difference]: Finished difference Result 39476 states and 48521 transitions. [2024-11-13 14:19:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-13 14:19:41,962 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.760869565217392) internal successors, (357), 45 states have internal predecessors, (357), 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 140 [2024-11-13 14:19:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:41,985 INFO L225 Difference]: With dead ends: 39476 [2024-11-13 14:19:41,985 INFO L226 Difference]: Without dead ends: 25302 [2024-11-13 14:19:41,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5152 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2944, Invalid=16516, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 14:19:41,991 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 20296 mSDsluCounter, 29104 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20296 SdHoareTripleChecker+Valid, 30627 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:41,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20296 Valid, 30627 Invalid, 2761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:19:42,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25302 states. [2024-11-13 14:19:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25302 to 24175. [2024-11-13 14:19:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24175 states, 24173 states have (on average 1.2284366855582676) internal successors, (29695), 24174 states have internal predecessors, (29695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24175 states to 24175 states and 29695 transitions. [2024-11-13 14:19:45,384 INFO L78 Accepts]: Start accepts. Automaton has 24175 states and 29695 transitions. Word has length 140 [2024-11-13 14:19:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:45,384 INFO L471 AbstractCegarLoop]: Abstraction has 24175 states and 29695 transitions. [2024-11-13 14:19:45,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.760869565217392) internal successors, (357), 45 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 24175 states and 29695 transitions. [2024-11-13 14:19:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-13 14:19:45,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:45,386 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:45,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:19:45,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:45,587 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:45,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1674812721, now seen corresponding path program 2 times [2024-11-13 14:19:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:45,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758332055] [2024-11-13 14:19:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 47 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:47,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:47,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758332055] [2024-11-13 14:19:47,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758332055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:47,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748589329] [2024-11-13 14:19:47,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:19:47,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:47,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:47,257 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:47,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f6aace-a8ac-43f2-aae3-e06c1e4c1a26/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:19:47,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:19:47,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:19:47,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:19:47,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 51 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:50,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 45 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:55,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748589329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:55,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:55,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 19] total 64 [2024-11-13 14:19:55,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822763179] [2024-11-13 14:19:55,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:55,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-13 14:19:55,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-13 14:19:55,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3759, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 14:19:55,819 INFO L87 Difference]: Start difference. First operand 24175 states and 29695 transitions. Second operand has 64 states, 64 states have (on average 6.09375) internal successors, (390), 64 states have internal predecessors, (390), 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)