./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1 --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 64bit --witnessprinter.graph.data.programhash f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:24:53,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:24:53,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 10:24:53,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:24:53,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:24:53,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:24:53,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:24:53,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:24:53,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:24:53,959 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:24:53,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:24:53,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:24:53,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:24:53,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:24:53,959 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:24:53,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:24:53,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:24:53,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:24:53,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:24:53,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:24:53,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:24:53,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:24:53,962 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_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 [2024-12-02 10:24:54,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:24:54,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:24:54,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:24:54,231 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:24:54,231 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:24:54,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-12-02 10:24:56,984 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/data/b395d5fb0/d42d7545d815466a971b41f3a2c22135/FLAG14dd64621 [2024-12-02 10:24:57,216 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:24:57,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-12-02 10:24:57,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/data/b395d5fb0/d42d7545d815466a971b41f3a2c22135/FLAG14dd64621 [2024-12-02 10:24:57,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/data/b395d5fb0/d42d7545d815466a971b41f3a2c22135 [2024-12-02 10:24:57,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:24:57,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:24:57,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:24:57,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:24:57,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:24:57,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5cc44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57, skipping insertion in model container [2024-12-02 10:24:57,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:24:57,387 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_4704f2c9-3b8a-4047-b921-5aa368b62b11/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-12-02 10:24:57,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:24:57,468 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:24:57,477 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_4704f2c9-3b8a-4047-b921-5aa368b62b11/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-12-02 10:24:57,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:24:57,543 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:24:57,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57 WrapperNode [2024-12-02 10:24:57,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:24:57,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:24:57,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:24:57,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:24:57,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,625 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 516 [2024-12-02 10:24:57,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:24:57,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:24:57,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:24:57,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:24:57,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,667 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]. [2024-12-02 10:24:57,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,684 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:24:57,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:24:57,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:24:57,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:24:57,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (1/1) ... [2024-12-02 10:24:57,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:24:57,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:57,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:24:57,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:24:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:24:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:24:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:24:57,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:24:57,877 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:24:57,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:24:58,543 INFO L? ?]: Removed 314 outVars from TransFormulas that were not future-live. [2024-12-02 10:24:58,543 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:24:58,554 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:24:58,554 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 10:24:58,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:24:58 BoogieIcfgContainer [2024-12-02 10:24:58,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:24:58,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:24:58,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:24:58,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:24:58,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:24:57" (1/3) ... [2024-12-02 10:24:58,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f7327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:24:58, skipping insertion in model container [2024-12-02 10:24:58,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:24:57" (2/3) ... [2024-12-02 10:24:58,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f7327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:24:58, skipping insertion in model container [2024-12-02 10:24:58,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:24:58" (3/3) ... [2024-12-02 10:24:58,563 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-12-02 10:24:58,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:24:58,579 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c that has 1 procedures, 130 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:24:58,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:24:58,641 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;@2dd2db81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:24:58,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:24:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 10:24:58,652 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:24:58,652 INFO L218 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] [2024-12-02 10:24:58,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:24:58,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1161288925, now seen corresponding path program 1 times [2024-12-02 10:24:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:58,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965591805] [2024-12-02 10:24:58,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965591805] [2024-12-02 10:24:59,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965591805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:24:59,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:24:59,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:24:59,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774976932] [2024-12-02 10:24:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:24:59,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:24:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:59,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:24:59,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:24:59,194 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:24:59,245 INFO L93 Difference]: Finished difference Result 233 states and 345 transitions. [2024-12-02 10:24:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:24:59,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-12-02 10:24:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:24:59,254 INFO L225 Difference]: With dead ends: 233 [2024-12-02 10:24:59,255 INFO L226 Difference]: Without dead ends: 129 [2024-12-02 10:24:59,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:24:59,260 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:24:59,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:24:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-12-02 10:24:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-12-02 10:24:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4765625) internal successors, (189), 128 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2024-12-02 10:24:59,291 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 45 [2024-12-02 10:24:59,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:24:59,291 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2024-12-02 10:24:59,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:59,292 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2024-12-02 10:24:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 10:24:59,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:24:59,293 INFO L218 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] [2024-12-02 10:24:59,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:24:59,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:24:59,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1638522894, now seen corresponding path program 1 times [2024-12-02 10:24:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635214298] [2024-12-02 10:24:59,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:59,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635214298] [2024-12-02 10:24:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635214298] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:24:59,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:24:59,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:24:59,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369009535] [2024-12-02 10:24:59,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:24:59,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:24:59,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:59,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:24:59,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:24:59,501 INFO L87 Difference]: Start difference. First operand 129 states and 189 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:24:59,544 INFO L93 Difference]: Finished difference Result 234 states and 343 transitions. [2024-12-02 10:24:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:24:59,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-12-02 10:24:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:24:59,546 INFO L225 Difference]: With dead ends: 234 [2024-12-02 10:24:59,546 INFO L226 Difference]: Without dead ends: 131 [2024-12-02 10:24:59,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:24:59,547 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:24:59,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:24:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-12-02 10:24:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-12-02 10:24:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 130 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 191 transitions. [2024-12-02 10:24:59,556 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 191 transitions. Word has length 46 [2024-12-02 10:24:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:24:59,557 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 191 transitions. [2024-12-02 10:24:59,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 191 transitions. [2024-12-02 10:24:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 10:24:59,558 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:24:59,558 INFO L218 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] [2024-12-02 10:24:59,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:24:59,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:24:59,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -352567844, now seen corresponding path program 1 times [2024-12-02 10:24:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546022679] [2024-12-02 10:24:59,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546022679] [2024-12-02 10:24:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546022679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:24:59,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:24:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:24:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185427385] [2024-12-02 10:24:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:24:59,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:24:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:59,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:24:59,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:24:59,986 INFO L87 Difference]: Start difference. First operand 131 states and 191 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:00,054 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2024-12-02 10:25:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:25:00,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-12-02 10:25:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:00,057 INFO L225 Difference]: With dead ends: 241 [2024-12-02 10:25:00,057 INFO L226 Difference]: Without dead ends: 136 [2024-12-02 10:25:00,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:00,058 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:00,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 889 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:25:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-12-02 10:25:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-12-02 10:25:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4592592592592593) internal successors, (197), 135 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 197 transitions. [2024-12-02 10:25:00,067 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 197 transitions. Word has length 47 [2024-12-02 10:25:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:00,068 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 197 transitions. [2024-12-02 10:25:00,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 197 transitions. [2024-12-02 10:25:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 10:25:00,069 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:00,069 INFO L218 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] [2024-12-02 10:25:00,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:25:00,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:00,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1430781511, now seen corresponding path program 1 times [2024-12-02 10:25:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39845321] [2024-12-02 10:25:00,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39845321] [2024-12-02 10:25:00,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39845321] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:00,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:00,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:25:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142501195] [2024-12-02 10:25:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:00,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:25:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:00,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:25:00,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:00,275 INFO L87 Difference]: Start difference. First operand 136 states and 197 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:00,341 INFO L93 Difference]: Finished difference Result 257 states and 373 transitions. [2024-12-02 10:25:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:25:00,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-12-02 10:25:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:00,343 INFO L225 Difference]: With dead ends: 257 [2024-12-02 10:25:00,343 INFO L226 Difference]: Without dead ends: 147 [2024-12-02 10:25:00,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:00,344 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:00,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:25:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-12-02 10:25:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-12-02 10:25:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4452054794520548) internal successors, (211), 146 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 211 transitions. [2024-12-02 10:25:00,352 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 211 transitions. Word has length 48 [2024-12-02 10:25:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:00,352 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 211 transitions. [2024-12-02 10:25:00,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 211 transitions. [2024-12-02 10:25:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 10:25:00,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:00,354 INFO L218 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] [2024-12-02 10:25:00,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:25:00,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:00,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1285611392, now seen corresponding path program 1 times [2024-12-02 10:25:00,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:00,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282385682] [2024-12-02 10:25:00,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:00,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:00,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282385682] [2024-12-02 10:25:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282385682] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:00,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144960130] [2024-12-02 10:25:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:00,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:00,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:00,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:00,469 INFO L87 Difference]: Start difference. First operand 147 states and 211 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:00,547 INFO L93 Difference]: Finished difference Result 363 states and 519 transitions. [2024-12-02 10:25:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-12-02 10:25:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:00,549 INFO L225 Difference]: With dead ends: 363 [2024-12-02 10:25:00,549 INFO L226 Difference]: Without dead ends: 242 [2024-12-02 10:25:00,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:00,551 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 391 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:00,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:25:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-12-02 10:25:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 194. [2024-12-02 10:25:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4455958549222798) internal successors, (279), 193 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2024-12-02 10:25:00,560 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 48 [2024-12-02 10:25:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:00,560 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2024-12-02 10:25:00,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2024-12-02 10:25:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 10:25:00,561 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:00,562 INFO L218 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] [2024-12-02 10:25:00,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:25:00,562 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:00,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1420291833, now seen corresponding path program 1 times [2024-12-02 10:25:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786342670] [2024-12-02 10:25:00,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786342670] [2024-12-02 10:25:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786342670] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:00,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038813907] [2024-12-02 10:25:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:00,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:00,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:00,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:00,679 INFO L87 Difference]: Start difference. First operand 194 states and 279 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) [2024-12-02 10:25:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:00,750 INFO L93 Difference]: Finished difference Result 357 states and 507 transitions. [2024-12-02 10:25:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:00,751 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 49 [2024-12-02 10:25:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:00,752 INFO L225 Difference]: With dead ends: 357 [2024-12-02 10:25:00,752 INFO L226 Difference]: Without dead ends: 228 [2024-12-02 10:25:00,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:00,753 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 359 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:00,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:25:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-12-02 10:25:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 188. [2024-12-02 10:25:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4385026737967914) internal successors, (269), 187 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) [2024-12-02 10:25:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 269 transitions. [2024-12-02 10:25:00,761 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 269 transitions. Word has length 49 [2024-12-02 10:25:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:00,761 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 269 transitions. [2024-12-02 10:25:00,761 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) [2024-12-02 10:25:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 269 transitions. [2024-12-02 10:25:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 10:25:00,762 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:00,762 INFO L218 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] [2024-12-02 10:25:00,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:25:00,762 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:00,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash -559412370, now seen corresponding path program 1 times [2024-12-02 10:25:00,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:00,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172250529] [2024-12-02 10:25:00,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172250529] [2024-12-02 10:25:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172250529] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:00,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:25:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149584961] [2024-12-02 10:25:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:00,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:25:00,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:00,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:25:00,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:00,953 INFO L87 Difference]: Start difference. First operand 188 states and 269 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2024-12-02 10:25:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:01,036 INFO L93 Difference]: Finished difference Result 337 states and 480 transitions. [2024-12-02 10:25:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:25:01,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 49 [2024-12-02 10:25:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:01,037 INFO L225 Difference]: With dead ends: 337 [2024-12-02 10:25:01,038 INFO L226 Difference]: Without dead ends: 206 [2024-12-02 10:25:01,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:01,039 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:01,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:25:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-12-02 10:25:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-12-02 10:25:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.4195121951219511) internal successors, (291), 205 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 291 transitions. [2024-12-02 10:25:01,047 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 291 transitions. Word has length 49 [2024-12-02 10:25:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:01,047 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 291 transitions. [2024-12-02 10:25:01,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2024-12-02 10:25:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 291 transitions. [2024-12-02 10:25:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 10:25:01,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:01,048 INFO L218 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] [2024-12-02 10:25:01,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:25:01,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:01,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1444590169, now seen corresponding path program 1 times [2024-12-02 10:25:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753131695] [2024-12-02 10:25:01,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753131695] [2024-12-02 10:25:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753131695] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:25:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733123980] [2024-12-02 10:25:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:01,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:25:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:01,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:25:01,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:01,247 INFO L87 Difference]: Start difference. First operand 206 states and 291 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:01,326 INFO L93 Difference]: Finished difference Result 385 states and 543 transitions. [2024-12-02 10:25:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:25:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-12-02 10:25:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:01,328 INFO L225 Difference]: With dead ends: 385 [2024-12-02 10:25:01,328 INFO L226 Difference]: Without dead ends: 228 [2024-12-02 10:25:01,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:01,329 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:01,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:25:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-12-02 10:25:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-12-02 10:25:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4052863436123348) internal successors, (319), 227 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2024-12-02 10:25:01,337 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 50 [2024-12-02 10:25:01,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:01,338 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2024-12-02 10:25:01,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,338 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2024-12-02 10:25:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 10:25:01,338 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:01,339 INFO L218 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] [2024-12-02 10:25:01,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:25:01,339 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:01,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -662315090, now seen corresponding path program 1 times [2024-12-02 10:25:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:01,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123566671] [2024-12-02 10:25:01,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:01,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:01,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123566671] [2024-12-02 10:25:01,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123566671] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:01,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:01,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000679039] [2024-12-02 10:25:01,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:01,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:01,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:01,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:01,494 INFO L87 Difference]: Start difference. First operand 228 states and 319 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:01,581 INFO L93 Difference]: Finished difference Result 428 states and 595 transitions. [2024-12-02 10:25:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-12-02 10:25:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:01,584 INFO L225 Difference]: With dead ends: 428 [2024-12-02 10:25:01,584 INFO L226 Difference]: Without dead ends: 266 [2024-12-02 10:25:01,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:01,585 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 375 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:01,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:25:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-12-02 10:25:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 218. [2024-12-02 10:25:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.3963133640552996) internal successors, (303), 217 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 303 transitions. [2024-12-02 10:25:01,593 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 303 transitions. Word has length 50 [2024-12-02 10:25:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:01,593 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 303 transitions. [2024-12-02 10:25:01,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 303 transitions. [2024-12-02 10:25:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 10:25:01,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:01,594 INFO L218 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] [2024-12-02 10:25:01,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:25:01,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:01,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash -75276800, now seen corresponding path program 1 times [2024-12-02 10:25:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:01,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158573111] [2024-12-02 10:25:01,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:01,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158573111] [2024-12-02 10:25:01,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158573111] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:01,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:01,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:25:01,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930612855] [2024-12-02 10:25:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:01,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:25:01,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:01,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:25:01,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:01,770 INFO L87 Difference]: Start difference. First operand 218 states and 303 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2024-12-02 10:25:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:01,832 INFO L93 Difference]: Finished difference Result 417 states and 579 transitions. [2024-12-02 10:25:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:25:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 51 [2024-12-02 10:25:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:01,834 INFO L225 Difference]: With dead ends: 417 [2024-12-02 10:25:01,834 INFO L226 Difference]: Without dead ends: 240 [2024-12-02 10:25:01,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:01,834 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:01,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:25:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-12-02 10:25:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-12-02 10:25:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3849372384937237) internal successors, (331), 239 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 331 transitions. [2024-12-02 10:25:01,840 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 331 transitions. Word has length 51 [2024-12-02 10:25:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:01,841 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 331 transitions. [2024-12-02 10:25:01,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2024-12-02 10:25:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 331 transitions. [2024-12-02 10:25:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 10:25:01,841 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:01,841 INFO L218 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] [2024-12-02 10:25:01,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:25:01,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:01,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 543160409, now seen corresponding path program 1 times [2024-12-02 10:25:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:01,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441415104] [2024-12-02 10:25:01,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:01,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:01,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441415104] [2024-12-02 10:25:01,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441415104] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:01,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214040320] [2024-12-02 10:25:01,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:01,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:01,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:01,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:01,955 INFO L87 Difference]: Start difference. First operand 240 states and 331 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) [2024-12-02 10:25:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:02,030 INFO L93 Difference]: Finished difference Result 444 states and 607 transitions. [2024-12-02 10:25:02,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:02,031 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 51 [2024-12-02 10:25:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:02,032 INFO L225 Difference]: With dead ends: 444 [2024-12-02 10:25:02,032 INFO L226 Difference]: Without dead ends: 262 [2024-12-02 10:25:02,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:02,033 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 319 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:02,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:25:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-12-02 10:25:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2024-12-02 10:25:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.3755458515283843) internal successors, (315), 229 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 315 transitions. [2024-12-02 10:25:02,040 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 315 transitions. Word has length 51 [2024-12-02 10:25:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:02,040 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 315 transitions. [2024-12-02 10:25:02,040 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) [2024-12-02 10:25:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 315 transitions. [2024-12-02 10:25:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 10:25:02,041 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:02,041 INFO L218 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] [2024-12-02 10:25:02,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 10:25:02,041 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:02,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -131357547, now seen corresponding path program 1 times [2024-12-02 10:25:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952441266] [2024-12-02 10:25:02,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952441266] [2024-12-02 10:25:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952441266] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:02,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:02,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641907151] [2024-12-02 10:25:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:02,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:02,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:02,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:02,152 INFO L87 Difference]: Start difference. First operand 230 states and 315 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:02,183 INFO L93 Difference]: Finished difference Result 430 states and 588 transitions. [2024-12-02 10:25:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-12-02 10:25:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:02,186 INFO L225 Difference]: With dead ends: 430 [2024-12-02 10:25:02,186 INFO L226 Difference]: Without dead ends: 246 [2024-12-02 10:25:02,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:02,187 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 4 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:02,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 725 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:25:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-02 10:25:02,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-12-02 10:25:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.3673469387755102) internal successors, (335), 245 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-12-02 10:25:02,195 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 52 [2024-12-02 10:25:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:02,195 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-12-02 10:25:02,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-12-02 10:25:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 10:25:02,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:02,196 INFO L218 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] [2024-12-02 10:25:02,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:25:02,196 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:02,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash -553739812, now seen corresponding path program 1 times [2024-12-02 10:25:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150107615] [2024-12-02 10:25:02,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:02,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:02,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150107615] [2024-12-02 10:25:02,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150107615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:02,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:02,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506039339] [2024-12-02 10:25:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:02,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:02,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:02,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:02,305 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:02,377 INFO L93 Difference]: Finished difference Result 467 states and 631 transitions. [2024-12-02 10:25:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:02,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-12-02 10:25:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:02,378 INFO L225 Difference]: With dead ends: 467 [2024-12-02 10:25:02,378 INFO L226 Difference]: Without dead ends: 268 [2024-12-02 10:25:02,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:02,379 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 311 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:02,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:25:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-12-02 10:25:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 236. [2024-12-02 10:25:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3574468085106384) internal successors, (319), 235 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2024-12-02 10:25:02,388 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 52 [2024-12-02 10:25:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:02,388 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2024-12-02 10:25:02,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2024-12-02 10:25:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 10:25:02,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:02,389 INFO L218 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] [2024-12-02 10:25:02,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:25:02,389 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:02,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1014688366, now seen corresponding path program 1 times [2024-12-02 10:25:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082006021] [2024-12-02 10:25:02,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082006021] [2024-12-02 10:25:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082006021] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:02,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:02,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032781367] [2024-12-02 10:25:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:02,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:25:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:02,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:25:02,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:02,482 INFO L87 Difference]: Start difference. First operand 236 states and 319 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) [2024-12-02 10:25:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:02,549 INFO L93 Difference]: Finished difference Result 437 states and 591 transitions. [2024-12-02 10:25:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:25:02,549 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 53 [2024-12-02 10:25:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:02,551 INFO L225 Difference]: With dead ends: 437 [2024-12-02 10:25:02,551 INFO L226 Difference]: Without dead ends: 237 [2024-12-02 10:25:02,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:25:02,552 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:02,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:25:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-12-02 10:25:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2024-12-02 10:25:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3696682464454977) internal successors, (289), 211 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 289 transitions. [2024-12-02 10:25:02,557 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 289 transitions. Word has length 53 [2024-12-02 10:25:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:02,557 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 289 transitions. [2024-12-02 10:25:02,557 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) [2024-12-02 10:25:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 289 transitions. [2024-12-02 10:25:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 10:25:02,558 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:02,558 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:02,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:25:02,558 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:02,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1013570968, now seen corresponding path program 1 times [2024-12-02 10:25:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976647182] [2024-12-02 10:25:02,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:04,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976647182] [2024-12-02 10:25:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976647182] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174280304] [2024-12-02 10:25:04,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:04,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:04,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:04,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:04,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:25:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:04,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-12-02 10:25:04,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:06,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174280304] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:09,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 25] total 54 [2024-12-02 10:25:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578472874] [2024-12-02 10:25:09,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:09,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 10:25:09,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:09,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 10:25:09,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2554, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 10:25:09,566 INFO L87 Difference]: Start difference. First operand 212 states and 289 transitions. Second operand has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 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) [2024-12-02 10:25:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:13,412 INFO L93 Difference]: Finished difference Result 636 states and 871 transitions. [2024-12-02 10:25:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 10:25:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 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 99 [2024-12-02 10:25:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:13,414 INFO L225 Difference]: With dead ends: 636 [2024-12-02 10:25:13,415 INFO L226 Difference]: Without dead ends: 474 [2024-12-02 10:25:13,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3944 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1254, Invalid=11628, Unknown=0, NotChecked=0, Total=12882 [2024-12-02 10:25:13,418 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 989 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:13,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 3001 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 10:25:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-12-02 10:25:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 359. [2024-12-02 10:25:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2024-12-02 10:25:13,425 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 99 [2024-12-02 10:25:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:13,425 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2024-12-02 10:25:13,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 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) [2024-12-02 10:25:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2024-12-02 10:25:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 10:25:13,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:13,427 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:13,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:25:13,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:25:13,627 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:13,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1576973281, now seen corresponding path program 1 times [2024-12-02 10:25:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:13,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380179899] [2024-12-02 10:25:13,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:15,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380179899] [2024-12-02 10:25:15,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380179899] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942330755] [2024-12-02 10:25:15,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:15,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:15,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:15,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:15,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:25:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:16,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-12-02 10:25:16,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:18,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:24,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942330755] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:24,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:24,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 24] total 62 [2024-12-02 10:25:24,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608929079] [2024-12-02 10:25:24,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:24,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 10:25:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:24,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 10:25:24,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3378, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 10:25:24,106 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:30,391 INFO L93 Difference]: Finished difference Result 1057 states and 1446 transitions. [2024-12-02 10:25:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 10:25:30,391 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 states have internal predecessors, (285), 0 states have call successors, (0), 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 [2024-12-02 10:25:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:30,394 INFO L225 Difference]: With dead ends: 1057 [2024-12-02 10:25:30,394 INFO L226 Difference]: Without dead ends: 780 [2024-12-02 10:25:30,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1960, Invalid=17780, Unknown=0, NotChecked=0, Total=19740 [2024-12-02 10:25:30,397 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 1493 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:30,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 3490 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 10:25:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-12-02 10:25:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 546. [2024-12-02 10:25:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.3541284403669724) internal successors, (738), 545 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 738 transitions. [2024-12-02 10:25:30,412 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 738 transitions. Word has length 100 [2024-12-02 10:25:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:30,412 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 738 transitions. [2024-12-02 10:25:30,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 738 transitions. [2024-12-02 10:25:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 10:25:30,413 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:30,413 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:30,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:25:30,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:25:30,614 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:30,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2083150738, now seen corresponding path program 1 times [2024-12-02 10:25:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:30,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264501277] [2024-12-02 10:25:30,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:30,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264501277] [2024-12-02 10:25:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264501277] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005321116] [2024-12-02 10:25:31,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:31,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:31,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:31,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:25:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:31,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-12-02 10:25:31,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:32,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:34,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005321116] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:34,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:34,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 21] total 48 [2024-12-02 10:25:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951070069] [2024-12-02 10:25:34,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:34,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 10:25:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:34,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 10:25:34,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 10:25:34,608 INFO L87 Difference]: Start difference. First operand 546 states and 738 transitions. Second operand has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 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) [2024-12-02 10:25:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:40,187 INFO L93 Difference]: Finished difference Result 2106 states and 2854 transitions. [2024-12-02 10:25:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-12-02 10:25:40,188 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 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 100 [2024-12-02 10:25:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:40,191 INFO L225 Difference]: With dead ends: 2106 [2024-12-02 10:25:40,191 INFO L226 Difference]: Without dead ends: 1791 [2024-12-02 10:25:40,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6350 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2459, Invalid=17001, Unknown=0, NotChecked=0, Total=19460 [2024-12-02 10:25:40,194 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 1498 mSDsluCounter, 6914 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 7189 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:40,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 7189 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 10:25:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2024-12-02 10:25:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 832. [2024-12-02 10:25:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.3465703971119134) internal successors, (1119), 831 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1119 transitions. [2024-12-02 10:25:40,213 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1119 transitions. Word has length 100 [2024-12-02 10:25:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:40,213 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1119 transitions. [2024-12-02 10:25:40,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 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) [2024-12-02 10:25:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1119 transitions. [2024-12-02 10:25:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 10:25:40,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:40,215 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:40,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 10:25:40,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:25:40,415 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:40,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1224472682, now seen corresponding path program 1 times [2024-12-02 10:25:40,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:40,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570110117] [2024-12-02 10:25:40,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570110117] [2024-12-02 10:25:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570110117] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614075430] [2024-12-02 10:25:41,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:41,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:41,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:41,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:25:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:42,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-12-02 10:25:42,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:43,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:45,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614075430] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:45,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:45,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 20] total 50 [2024-12-02 10:25:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600752596] [2024-12-02 10:25:45,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:45,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-12-02 10:25:45,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:45,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-12-02 10:25:45,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2246, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 10:25:45,019 INFO L87 Difference]: Start difference. First operand 832 states and 1119 transitions. Second operand has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 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) [2024-12-02 10:25:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:51,051 INFO L93 Difference]: Finished difference Result 2066 states and 2803 transitions. [2024-12-02 10:25:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-12-02 10:25:51,051 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 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 [2024-12-02 10:25:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:51,054 INFO L225 Difference]: With dead ends: 2066 [2024-12-02 10:25:51,054 INFO L226 Difference]: Without dead ends: 1544 [2024-12-02 10:25:51,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5435 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1769, Invalid=18823, Unknown=0, NotChecked=0, Total=20592 [2024-12-02 10:25:51,056 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 2334 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:51,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4561 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 10:25:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-12-02 10:25:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1146. [2024-12-02 10:25:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.3362445414847162) internal successors, (1530), 1145 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1530 transitions. [2024-12-02 10:25:51,094 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1530 transitions. Word has length 101 [2024-12-02 10:25:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:51,095 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1530 transitions. [2024-12-02 10:25:51,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 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) [2024-12-02 10:25:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1530 transitions. [2024-12-02 10:25:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 10:25:51,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:51,096 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:51,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 10:25:51,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:25:51,297 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:51,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1373936955, now seen corresponding path program 1 times [2024-12-02 10:25:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:51,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581079376] [2024-12-02 10:25:51,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:52,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581079376] [2024-12-02 10:25:52,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581079376] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617764543] [2024-12-02 10:25:52,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:52,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:52,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:52,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:25:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:53,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-12-02 10:25:53,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:53,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617764543] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:55,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:55,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 15] total 38 [2024-12-02 10:25:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134106064] [2024-12-02 10:25:55,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:55,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 10:25:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:55,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 10:25:55,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 10:25:55,420 INFO L87 Difference]: Start difference. First operand 1146 states and 1530 transitions. Second operand has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 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) [2024-12-02 10:25:56,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:56,995 INFO L93 Difference]: Finished difference Result 2131 states and 2862 transitions. [2024-12-02 10:25:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 10:25:56,996 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 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 101 [2024-12-02 10:25:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:56,998 INFO L225 Difference]: With dead ends: 2131 [2024-12-02 10:25:56,998 INFO L226 Difference]: Without dead ends: 1247 [2024-12-02 10:25:56,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=585, Invalid=3447, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 10:25:56,999 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 1170 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:56,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1852 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:25:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2024-12-02 10:25:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 947. [2024-12-02 10:25:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.3456659619450317) internal successors, (1273), 946 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1273 transitions. [2024-12-02 10:25:57,021 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1273 transitions. Word has length 101 [2024-12-02 10:25:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:57,021 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1273 transitions. [2024-12-02 10:25:57,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 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) [2024-12-02 10:25:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1273 transitions. [2024-12-02 10:25:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 10:25:57,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:57,022 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:57,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:25:57,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:57,223 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:57,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:57,223 INFO L85 PathProgramCache]: Analyzing trace with hash 296144241, now seen corresponding path program 1 times [2024-12-02 10:25:57,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:57,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257771689] [2024-12-02 10:25:57,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:57,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257771689] [2024-12-02 10:25:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257771689] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843239007] [2024-12-02 10:25:58,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:58,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:58,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:58,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:58,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:25:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:58,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-12-02 10:25:58,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:59,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:01,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843239007] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:01,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:01,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 35 [2024-12-02 10:26:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7033962] [2024-12-02 10:26:01,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:01,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 10:26:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:01,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 10:26:01,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 10:26:01,610 INFO L87 Difference]: Start difference. First operand 947 states and 1273 transitions. Second operand has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:03,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:03,318 INFO L93 Difference]: Finished difference Result 1825 states and 2449 transitions. [2024-12-02 10:26:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 10:26:03,319 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 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 [2024-12-02 10:26:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:03,321 INFO L225 Difference]: With dead ends: 1825 [2024-12-02 10:26:03,321 INFO L226 Difference]: Without dead ends: 1009 [2024-12-02 10:26:03,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=586, Invalid=3970, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 10:26:03,323 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 553 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:03,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2265 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:26:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-12-02 10:26:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 925. [2024-12-02 10:26:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.3474025974025974) internal successors, (1245), 924 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1245 transitions. [2024-12-02 10:26:03,339 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1245 transitions. Word has length 102 [2024-12-02 10:26:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:26:03,340 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1245 transitions. [2024-12-02 10:26:03,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1245 transitions. [2024-12-02 10:26:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 10:26:03,342 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:26:03,342 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:26:03,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:26:03,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:03,543 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:26:03,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1122330496, now seen corresponding path program 2 times [2024-12-02 10:26:03,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:03,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700797777] [2024-12-02 10:26:03,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:26:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:04,214 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:26:04,214 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:26:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:08,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:08,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700797777] [2024-12-02 10:26:08,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700797777] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:26:08,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269357530] [2024-12-02 10:26:08,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:26:08,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:08,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:08,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:26:09,272 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:26:09,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:26:09,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-12-02 10:26:09,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:11,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269357530] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:14,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 66 [2024-12-02 10:26:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225151365] [2024-12-02 10:26:14,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:14,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 10:26:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:14,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 10:26:14,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3960, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 10:26:14,319 INFO L87 Difference]: Start difference. First operand 925 states and 1245 transitions. Second operand has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:22,449 INFO L93 Difference]: Finished difference Result 8359 states and 11173 transitions. [2024-12-02 10:26:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-12-02 10:26:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 states have internal predecessors, (433), 0 states have call successors, (0), 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 150 [2024-12-02 10:26:22,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:22,460 INFO L225 Difference]: With dead ends: 8359 [2024-12-02 10:26:22,460 INFO L226 Difference]: Without dead ends: 7750 [2024-12-02 10:26:22,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13676 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=4230, Invalid=37590, Unknown=0, NotChecked=0, Total=41820 [2024-12-02 10:26:22,465 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 6349 mSDsluCounter, 4535 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6349 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:22,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6349 Valid, 4660 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 10:26:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2024-12-02 10:26:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 2228. [2024-12-02 10:26:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 1.3390211046250562) internal successors, (2982), 2227 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2982 transitions. [2024-12-02 10:26:22,516 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2982 transitions. Word has length 150 [2024-12-02 10:26:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:26:22,517 INFO L471 AbstractCegarLoop]: Abstraction has 2228 states and 2982 transitions. [2024-12-02 10:26:22,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2982 transitions. [2024-12-02 10:26:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 10:26:22,520 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:26:22,520 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:26:22,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:26:22,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:22,721 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:26:22,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 211462663, now seen corresponding path program 2 times [2024-12-02 10:26:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33277148] [2024-12-02 10:26:22,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:26:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:23,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:26:23,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:26:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33277148] [2024-12-02 10:26:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33277148] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:26:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511063283] [2024-12-02 10:26:26,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:26:26,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:26,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:26,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:26,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:26:26,652 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:26:26,652 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:26:26,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-12-02 10:26:26,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 61 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 10:26:27,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511063283] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:29,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:29,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 21] total 59 [2024-12-02 10:26:29,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194092653] [2024-12-02 10:26:29,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:29,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-02 10:26:29,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:29,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-02 10:26:29,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3130, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 10:26:29,518 INFO L87 Difference]: Start difference. First operand 2228 states and 2982 transitions. Second operand has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:31,732 INFO L93 Difference]: Finished difference Result 5026 states and 6699 transitions. [2024-12-02 10:26:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-12-02 10:26:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 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 151 [2024-12-02 10:26:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:31,737 INFO L225 Difference]: With dead ends: 5026 [2024-12-02 10:26:31,737 INFO L226 Difference]: Without dead ends: 3078 [2024-12-02 10:26:31,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 266 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3459 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1370, Invalid=9972, Unknown=0, NotChecked=0, Total=11342 [2024-12-02 10:26:31,741 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 1605 mSDsluCounter, 5511 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:31,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 5702 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:26:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2024-12-02 10:26:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2524. [2024-12-02 10:26:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 1.3285770907649623) internal successors, (3352), 2523 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3352 transitions. [2024-12-02 10:26:31,786 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3352 transitions. Word has length 151 [2024-12-02 10:26:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:26:31,787 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 3352 transitions. [2024-12-02 10:26:31,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3352 transitions. [2024-12-02 10:26:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 10:26:31,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:26:31,790 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:26:31,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:26:31,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:31,990 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:26:31,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:31,991 INFO L85 PathProgramCache]: Analyzing trace with hash -660574051, now seen corresponding path program 1 times [2024-12-02 10:26:31,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:31,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293847321] [2024-12-02 10:26:31,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 10:26:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:32,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293847321] [2024-12-02 10:26:32,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293847321] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:26:32,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:26:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:26:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098733077] [2024-12-02 10:26:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:26:32,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:26:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:32,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:26:32,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:26:32,981 INFO L87 Difference]: Start difference. First operand 2524 states and 3352 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:33,093 INFO L93 Difference]: Finished difference Result 3530 states and 4707 transitions. [2024-12-02 10:26:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:26:33,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 152 [2024-12-02 10:26:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:33,099 INFO L225 Difference]: With dead ends: 3530 [2024-12-02 10:26:33,099 INFO L226 Difference]: Without dead ends: 2504 [2024-12-02 10:26:33,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:26:33,100 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 432 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:33,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 698 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:26:33,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2024-12-02 10:26:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2504. [2024-12-02 10:26:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 1.3284059129045145) internal successors, (3325), 2503 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3325 transitions. [2024-12-02 10:26:33,127 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3325 transitions. Word has length 152 [2024-12-02 10:26:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:26:33,128 INFO L471 AbstractCegarLoop]: Abstraction has 2504 states and 3325 transitions. [2024-12-02 10:26:33,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3325 transitions. [2024-12-02 10:26:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 10:26:33,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:26:33,134 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:26:33,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 10:26:33,134 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:26:33,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -460941491, now seen corresponding path program 1 times [2024-12-02 10:26:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832601229] [2024-12-02 10:26:33,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:26:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832601229] [2024-12-02 10:26:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832601229] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:26:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449206787] [2024-12-02 10:26:34,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:34,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:34,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:34,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:26:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:34,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-12-02 10:26:34,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:36,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:26:37,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449206787] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:37,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:37,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 15] total 41 [2024-12-02 10:26:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388438271] [2024-12-02 10:26:37,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:37,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 10:26:37,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:37,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 10:26:37,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1465, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 10:26:37,732 INFO L87 Difference]: Start difference. First operand 2504 states and 3325 transitions. Second operand has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:39,976 INFO L93 Difference]: Finished difference Result 5215 states and 6982 transitions. [2024-12-02 10:26:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 10:26:39,976 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 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 152 [2024-12-02 10:26:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:39,981 INFO L225 Difference]: With dead ends: 5215 [2024-12-02 10:26:39,981 INFO L226 Difference]: Without dead ends: 3721 [2024-12-02 10:26:39,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=743, Invalid=5419, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 10:26:39,983 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 865 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:39,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 5724 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 10:26:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2024-12-02 10:26:40,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 2737. [2024-12-02 10:26:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2736 states have (on average 1.3362573099415205) internal successors, (3656), 2736 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3656 transitions. [2024-12-02 10:26:40,013 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3656 transitions. Word has length 152 [2024-12-02 10:26:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:26:40,013 INFO L471 AbstractCegarLoop]: Abstraction has 2737 states and 3656 transitions. [2024-12-02 10:26:40,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:26:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3656 transitions. [2024-12-02 10:26:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 10:26:40,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:26:40,018 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:26:40,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:26:40,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:40,218 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:26:40,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:40,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1605008847, now seen corresponding path program 2 times [2024-12-02 10:26:40,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:40,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508908886] [2024-12-02 10:26:40,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:26:40,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:40,980 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:26:40,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:26:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508908886] [2024-12-02 10:26:43,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508908886] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:26:43,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019778465] [2024-12-02 10:26:43,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:26:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:43,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:43,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:43,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:26:44,110 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:26:44,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:26:44,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-12-02 10:26:44,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:45,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019778465] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:48,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 67 [2024-12-02 10:26:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849777797] [2024-12-02 10:26:48,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:48,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 10:26:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:48,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 10:26:48,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=4100, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 10:26:48,640 INFO L87 Difference]: Start difference. First operand 2737 states and 3656 transitions. Second operand has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:27:00,196 INFO L93 Difference]: Finished difference Result 7580 states and 10023 transitions. [2024-12-02 10:27:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2024-12-02 10:27:00,196 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 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 152 [2024-12-02 10:27:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:27:00,203 INFO L225 Difference]: With dead ends: 7580 [2024-12-02 10:27:00,204 INFO L226 Difference]: Without dead ends: 5843 [2024-12-02 10:27:00,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23753 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=4385, Invalid=66105, Unknown=0, NotChecked=0, Total=70490 [2024-12-02 10:27:00,206 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 2966 mSDsluCounter, 10365 mSDsCounter, 0 mSdLazyCounter, 9136 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 10659 SdHoareTripleChecker+Invalid, 9175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 9136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:27:00,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 10659 Invalid, 9175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 9136 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 10:27:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2024-12-02 10:27:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 3406. [2024-12-02 10:27:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.3309838472834068) internal successors, (4532), 3405 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 4532 transitions. [2024-12-02 10:27:00,242 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 4532 transitions. Word has length 152 [2024-12-02 10:27:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:27:00,242 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 4532 transitions. [2024-12-02 10:27:00,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 4532 transitions. [2024-12-02 10:27:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 10:27:00,245 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:27:00,245 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:27:00,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:27:00,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:00,446 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:27:00,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash 996168025, now seen corresponding path program 2 times [2024-12-02 10:27:00,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:27:00,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035788305] [2024-12-02 10:27:00,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:27:00,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:27:01,123 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:27:01,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:27:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:03,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:27:03,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035788305] [2024-12-02 10:27:03,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035788305] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:27:03,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986057979] [2024-12-02 10:27:03,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:27:03,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:03,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:03,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:27:03,880 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:27:03,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:27:03,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-12-02 10:27:03,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:05,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:27:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986057979] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:27:09,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:27:09,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 33] total 74 [2024-12-02 10:27:09,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311578972] [2024-12-02 10:27:09,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:27:09,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-02 10:27:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:27:09,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-02 10:27:09,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=4973, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 10:27:09,321 INFO L87 Difference]: Start difference. First operand 3406 states and 4532 transitions. Second operand has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:27:13,347 INFO L93 Difference]: Finished difference Result 8571 states and 11373 transitions. [2024-12-02 10:27:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 10:27:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 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 153 [2024-12-02 10:27:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:27:13,356 INFO L225 Difference]: With dead ends: 8571 [2024-12-02 10:27:13,356 INFO L226 Difference]: Without dead ends: 5464 [2024-12-02 10:27:13,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1372, Invalid=13880, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 10:27:13,359 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 2267 mSDsluCounter, 4750 mSDsCounter, 0 mSdLazyCounter, 3848 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 4863 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:27:13,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 4863 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3848 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 10:27:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2024-12-02 10:27:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4131. [2024-12-02 10:27:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4131 states, 4130 states have (on average 1.3014527845036319) internal successors, (5375), 4130 states have internal predecessors, (5375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 5375 transitions. [2024-12-02 10:27:13,404 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 5375 transitions. Word has length 153 [2024-12-02 10:27:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:27:13,404 INFO L471 AbstractCegarLoop]: Abstraction has 4131 states and 5375 transitions. [2024-12-02 10:27:13,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 5375 transitions. [2024-12-02 10:27:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 10:27:13,407 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:27:13,407 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:27:13,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:27:13,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 10:27:13,607 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:27:13,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 836606794, now seen corresponding path program 1 times [2024-12-02 10:27:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:27:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493471930] [2024-12-02 10:27:13,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:27:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 55 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:16,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:27:16,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493471930] [2024-12-02 10:27:16,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493471930] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:27:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670432058] [2024-12-02 10:27:16,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:16,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:16,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:16,887 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:16,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:27:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:17,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-12-02 10:27:17,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:19,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:27:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670432058] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:27:23,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:27:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 26] total 69 [2024-12-02 10:27:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511255221] [2024-12-02 10:27:23,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:27:23,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 10:27:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:27:23,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 10:27:23,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4342, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 10:27:23,238 INFO L87 Difference]: Start difference. First operand 4131 states and 5375 transitions. Second operand has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:27:36,537 INFO L93 Difference]: Finished difference Result 16411 states and 21536 transitions. [2024-12-02 10:27:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-12-02 10:27:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 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 153 [2024-12-02 10:27:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:27:36,552 INFO L225 Difference]: With dead ends: 16411 [2024-12-02 10:27:36,552 INFO L226 Difference]: Without dead ends: 12345 [2024-12-02 10:27:36,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18169 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=4590, Invalid=48080, Unknown=0, NotChecked=0, Total=52670 [2024-12-02 10:27:36,556 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 3691 mSDsluCounter, 8115 mSDsCounter, 0 mSdLazyCounter, 6810 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 6881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 6810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:27:36,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3691 Valid, 8263 Invalid, 6881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 6810 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 10:27:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12345 states. [2024-12-02 10:27:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12345 to 6847. [2024-12-02 10:27:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6847 states, 6846 states have (on average 1.3236926672509495) internal successors, (9062), 6846 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6847 states to 6847 states and 9062 transitions. [2024-12-02 10:27:36,642 INFO L78 Accepts]: Start accepts. Automaton has 6847 states and 9062 transitions. Word has length 153 [2024-12-02 10:27:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:27:36,642 INFO L471 AbstractCegarLoop]: Abstraction has 6847 states and 9062 transitions. [2024-12-02 10:27:36,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6847 states and 9062 transitions. [2024-12-02 10:27:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 10:27:36,644 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:27:36,644 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:27:36,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:27:36,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 10:27:36,845 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:27:36,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2051927795, now seen corresponding path program 1 times [2024-12-02 10:27:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:27:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185070719] [2024-12-02 10:27:36,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:27:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:27:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185070719] [2024-12-02 10:27:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185070719] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:27:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616985939] [2024-12-02 10:27:38,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:38,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:38,979 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:38,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:27:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:39,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-12-02 10:27:39,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:41,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:27:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 10 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:43,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616985939] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:27:43,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:27:43,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 19] total 56 [2024-12-02 10:27:43,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102059404] [2024-12-02 10:27:43,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:27:43,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 10:27:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:27:43,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 10:27:43,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=2719, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 10:27:43,764 INFO L87 Difference]: Start difference. First operand 6847 states and 9062 transitions. Second operand has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:47,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:27:47,146 INFO L93 Difference]: Finished difference Result 13886 states and 18441 transitions. [2024-12-02 10:27:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-12-02 10:27:47,147 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 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 153 [2024-12-02 10:27:47,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:27:47,156 INFO L225 Difference]: With dead ends: 13886 [2024-12-02 10:27:47,156 INFO L226 Difference]: Without dead ends: 8610 [2024-12-02 10:27:47,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5182 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1772, Invalid=13728, Unknown=0, NotChecked=0, Total=15500 [2024-12-02 10:27:47,160 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 2408 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:27:47,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 6725 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 10:27:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2024-12-02 10:27:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 5468. [2024-12-02 10:27:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5468 states, 5467 states have (on average 1.3305286263032743) internal successors, (7274), 5467 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5468 states to 5468 states and 7274 transitions. [2024-12-02 10:27:47,234 INFO L78 Accepts]: Start accepts. Automaton has 5468 states and 7274 transitions. Word has length 153 [2024-12-02 10:27:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:27:47,235 INFO L471 AbstractCegarLoop]: Abstraction has 5468 states and 7274 transitions. [2024-12-02 10:27:47,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:27:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5468 states and 7274 transitions. [2024-12-02 10:27:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 10:27:47,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:27:47,237 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 10:27:47,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:27:47,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 10:27:47,437 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:27:47,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash 201357518, now seen corresponding path program 1 times [2024-12-02 10:27:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:27:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807969495] [2024-12-02 10:27:47,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:27:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:27:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807969495] [2024-12-02 10:27:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807969495] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:27:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585315792] [2024-12-02 10:27:51,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:51,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:51,368 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:27:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:52,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-12-02 10:27:52,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:27:53,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:27:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:56,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585315792] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:27:56,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:27:56,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 26] total 64 [2024-12-02 10:27:56,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725675788] [2024-12-02 10:27:56,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:27:56,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 10:27:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:27:56,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 10:27:56,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3682, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 10:27:56,360 INFO L87 Difference]: Start difference. First operand 5468 states and 7274 transitions. Second operand has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:28:04,384 INFO L93 Difference]: Finished difference Result 20353 states and 27329 transitions. [2024-12-02 10:28:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-12-02 10:28:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 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 156 [2024-12-02 10:28:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:28:04,396 INFO L225 Difference]: With dead ends: 20353 [2024-12-02 10:28:04,396 INFO L226 Difference]: Without dead ends: 16176 [2024-12-02 10:28:04,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11332 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3091, Invalid=31319, Unknown=0, NotChecked=0, Total=34410 [2024-12-02 10:28:04,402 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 3842 mSDsluCounter, 5987 mSDsCounter, 0 mSdLazyCounter, 4723 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:28:04,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 6177 Invalid, 4786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4723 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 10:28:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16176 states. [2024-12-02 10:28:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16176 to 7485. [2024-12-02 10:28:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 7484 states have (on average 1.3384553714591128) internal successors, (10017), 7484 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10017 transitions. [2024-12-02 10:28:04,518 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10017 transitions. Word has length 156 [2024-12-02 10:28:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:28:04,518 INFO L471 AbstractCegarLoop]: Abstraction has 7485 states and 10017 transitions. [2024-12-02 10:28:04,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10017 transitions. [2024-12-02 10:28:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 10:28:04,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:28:04,524 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 10:28:04,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 10:28:04,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 10:28:04,724 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:28:04,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:28:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1469699451, now seen corresponding path program 2 times [2024-12-02 10:28:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:28:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875728359] [2024-12-02 10:28:04,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:28:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:28:05,499 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:28:05,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:28:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 10:28:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:28:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875728359] [2024-12-02 10:28:06,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875728359] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:28:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792076272] [2024-12-02 10:28:06,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:28:06,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:28:06,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:28:06,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:28:06,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 10:28:06,842 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:28:06,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:28:06,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 10:28:06,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:28:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 10:28:07,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:28:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 205 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:28:07,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792076272] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:28:07,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:28:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-12-02 10:28:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196405545] [2024-12-02 10:28:07,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:28:07,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 10:28:07,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:28:07,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 10:28:07,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:28:07,420 INFO L87 Difference]: Start difference. First operand 7485 states and 10017 transitions. Second operand has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:28:07,804 INFO L93 Difference]: Finished difference Result 25172 states and 33644 transitions. [2024-12-02 10:28:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:28:07,805 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 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 203 [2024-12-02 10:28:07,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:28:07,817 INFO L225 Difference]: With dead ends: 25172 [2024-12-02 10:28:07,818 INFO L226 Difference]: Without dead ends: 18246 [2024-12-02 10:28:07,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2024-12-02 10:28:07,824 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 1080 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:28:07,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1961 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:28:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18246 states. [2024-12-02 10:28:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18246 to 13925. [2024-12-02 10:28:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13925 states, 13924 states have (on average 1.3316575696638897) internal successors, (18542), 13924 states have internal predecessors, (18542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13925 states to 13925 states and 18542 transitions. [2024-12-02 10:28:08,003 INFO L78 Accepts]: Start accepts. Automaton has 13925 states and 18542 transitions. Word has length 203 [2024-12-02 10:28:08,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:28:08,003 INFO L471 AbstractCegarLoop]: Abstraction has 13925 states and 18542 transitions. [2024-12-02 10:28:08,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13925 states and 18542 transitions. [2024-12-02 10:28:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 10:28:08,010 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:28:08,010 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 10:28:08,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 10:28:08,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:28:08,211 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:28:08,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:28:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash -845817580, now seen corresponding path program 1 times [2024-12-02 10:28:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:28:08,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921219880] [2024-12-02 10:28:08,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:28:08,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:28:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:28:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:28:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:28:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921219880] [2024-12-02 10:28:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921219880] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:28:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668111031] [2024-12-02 10:28:14,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:28:14,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:28:14,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:28:14,081 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:28:14,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 10:28:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:28:15,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-12-02 10:28:15,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:28:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:28:19,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:28:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 21 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:28:24,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668111031] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:28:24,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:28:24,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 84 [2024-12-02 10:28:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141173526] [2024-12-02 10:28:24,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:28:24,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-12-02 10:28:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:28:24,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-12-02 10:28:24,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=6587, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 10:28:24,723 INFO L87 Difference]: Start difference. First operand 13925 states and 18542 transitions. Second operand has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:28:58,190 INFO L93 Difference]: Finished difference Result 66642 states and 88922 transitions. [2024-12-02 10:28:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2024-12-02 10:28:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 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 204 [2024-12-02 10:28:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:28:58,221 INFO L225 Difference]: With dead ends: 66642 [2024-12-02 10:28:58,221 INFO L226 Difference]: Without dead ends: 52344 [2024-12-02 10:28:58,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81488 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=10738, Invalid=195832, Unknown=0, NotChecked=0, Total=206570 [2024-12-02 10:28:58,236 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 3702 mSDsluCounter, 14151 mSDsCounter, 0 mSdLazyCounter, 14871 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3702 SdHoareTripleChecker+Valid, 14431 SdHoareTripleChecker+Invalid, 14954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 14871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:28:58,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3702 Valid, 14431 Invalid, 14954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 14871 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 10:28:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52344 states. [2024-12-02 10:28:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52344 to 27388. [2024-12-02 10:28:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27388 states, 27387 states have (on average 1.3369116734216964) internal successors, (36614), 27387 states have internal predecessors, (36614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27388 states to 27388 states and 36614 transitions. [2024-12-02 10:28:58,612 INFO L78 Accepts]: Start accepts. Automaton has 27388 states and 36614 transitions. Word has length 204 [2024-12-02 10:28:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:28:58,613 INFO L471 AbstractCegarLoop]: Abstraction has 27388 states and 36614 transitions. [2024-12-02 10:28:58,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:28:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27388 states and 36614 transitions. [2024-12-02 10:28:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 10:28:58,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:28:58,624 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 10:28:58,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 10:28:58,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:28:58,824 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:28:58,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:28:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1262314959, now seen corresponding path program 1 times [2024-12-02 10:28:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:28:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888821125] [2024-12-02 10:28:58,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:28:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:29:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-12-02 10:29:01,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:29:01,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888821125] [2024-12-02 10:29:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888821125] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:29:01,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:29:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:29:01,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016836221] [2024-12-02 10:29:01,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:29:01,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:29:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:29:01,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:29:01,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:29:01,178 INFO L87 Difference]: Start difference. First operand 27388 states and 36614 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:29:01,397 INFO L93 Difference]: Finished difference Result 49926 states and 67155 transitions. [2024-12-02 10:29:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:29:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 204 [2024-12-02 10:29:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:29:01,420 INFO L225 Difference]: With dead ends: 49926 [2024-12-02 10:29:01,420 INFO L226 Difference]: Without dead ends: 29118 [2024-12-02 10:29:01,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:29:01,433 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 8 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:29:01,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1437 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:29:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2024-12-02 10:29:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 28552. [2024-12-02 10:29:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28552 states, 28551 states have (on average 1.3324226822177858) internal successors, (38042), 28551 states have internal predecessors, (38042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28552 states to 28552 states and 38042 transitions. [2024-12-02 10:29:01,762 INFO L78 Accepts]: Start accepts. Automaton has 28552 states and 38042 transitions. Word has length 204 [2024-12-02 10:29:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:29:01,762 INFO L471 AbstractCegarLoop]: Abstraction has 28552 states and 38042 transitions. [2024-12-02 10:29:01,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 28552 states and 38042 transitions. [2024-12-02 10:29:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 10:29:01,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:29:01,774 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:29:01,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 10:29:01,774 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:29:01,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:29:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash -322449372, now seen corresponding path program 1 times [2024-12-02 10:29:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:29:01,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412696133] [2024-12-02 10:29:01,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:29:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:29:03,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:29:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412696133] [2024-12-02 10:29:03,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412696133] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:29:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021384712] [2024-12-02 10:29:03,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:03,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:29:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:29:03,150 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:29:03,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 10:29:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:04,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-02 10:29:04,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:29:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:29:04,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:29:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 109 proven. 84 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:29:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021384712] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:29:06,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:29:06,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 16] total 34 [2024-12-02 10:29:06,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375613575] [2024-12-02 10:29:06,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:29:06,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 10:29:06,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:29:06,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 10:29:06,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 10:29:06,554 INFO L87 Difference]: Start difference. First operand 28552 states and 38042 transitions. Second operand has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:08,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:29:08,014 INFO L93 Difference]: Finished difference Result 48324 states and 64430 transitions. [2024-12-02 10:29:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 10:29:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 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 204 [2024-12-02 10:29:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:29:08,029 INFO L225 Difference]: With dead ends: 48324 [2024-12-02 10:29:08,030 INFO L226 Difference]: Without dead ends: 19874 [2024-12-02 10:29:08,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=2078, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 10:29:08,043 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 601 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:29:08,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 3474 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 10:29:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19874 states. [2024-12-02 10:29:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19874 to 19669. [2024-12-02 10:29:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19669 states, 19668 states have (on average 1.3257575757575757) internal successors, (26075), 19668 states have internal predecessors, (26075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19669 states to 19669 states and 26075 transitions. [2024-12-02 10:29:08,276 INFO L78 Accepts]: Start accepts. Automaton has 19669 states and 26075 transitions. Word has length 204 [2024-12-02 10:29:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:29:08,277 INFO L471 AbstractCegarLoop]: Abstraction has 19669 states and 26075 transitions. [2024-12-02 10:29:08,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 19669 states and 26075 transitions. [2024-12-02 10:29:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 10:29:08,284 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:29:08,284 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:29:08,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 10:29:08,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:29:08,484 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:29:08,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:29:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash -653487970, now seen corresponding path program 1 times [2024-12-02 10:29:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:29:08,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459450530] [2024-12-02 10:29:08,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:29:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 96 proven. 97 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 10:29:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:29:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459450530] [2024-12-02 10:29:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459450530] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:29:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298383081] [2024-12-02 10:29:09,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:29:09,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:29:09,714 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:29:09,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 10:29:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:11,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 243 conjuncts are in the unsatisfiable core [2024-12-02 10:29:11,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:29:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 64 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:29:14,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:29:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 15 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:29:21,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298383081] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:29:21,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:29:21,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 36, 38] total 78 [2024-12-02 10:29:21,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807553655] [2024-12-02 10:29:21,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:29:21,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-02 10:29:21,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:29:21,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-02 10:29:21,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=5586, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 10:29:21,353 INFO L87 Difference]: Start difference. First operand 19669 states and 26075 transitions. Second operand has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:29:47,321 INFO L93 Difference]: Finished difference Result 98024 states and 130526 transitions. [2024-12-02 10:29:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-12-02 10:29:47,322 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 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 204 [2024-12-02 10:29:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:29:47,374 INFO L225 Difference]: With dead ends: 98024 [2024-12-02 10:29:47,374 INFO L226 Difference]: Without dead ends: 78457 [2024-12-02 10:29:47,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30038 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=6836, Invalid=83464, Unknown=0, NotChecked=0, Total=90300 [2024-12-02 10:29:47,472 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 5268 mSDsluCounter, 12632 mSDsCounter, 0 mSdLazyCounter, 9613 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5268 SdHoareTripleChecker+Valid, 12923 SdHoareTripleChecker+Invalid, 9756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 9613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:29:47,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5268 Valid, 12923 Invalid, 9756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 9613 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 10:29:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78457 states. [2024-12-02 10:29:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78457 to 43251. [2024-12-02 10:29:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43251 states, 43250 states have (on average 1.323121387283237) internal successors, (57225), 43250 states have internal predecessors, (57225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43251 states to 43251 states and 57225 transitions. [2024-12-02 10:29:48,001 INFO L78 Accepts]: Start accepts. Automaton has 43251 states and 57225 transitions. Word has length 204 [2024-12-02 10:29:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:29:48,002 INFO L471 AbstractCegarLoop]: Abstraction has 43251 states and 57225 transitions. [2024-12-02 10:29:48,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:29:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 43251 states and 57225 transitions. [2024-12-02 10:29:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 10:29:48,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:29:48,012 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-12-02 10:29:48,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 10:29:48,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 10:29:48,212 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:29:48,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:29:48,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1437863642, now seen corresponding path program 1 times [2024-12-02 10:29:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:29:48,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237508062] [2024-12-02 10:29:48,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:48,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:29:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:29:53,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:29:53,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237508062] [2024-12-02 10:29:53,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237508062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:29:53,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376041366] [2024-12-02 10:29:53,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:53,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:29:53,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:29:53,803 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:29:53,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 10:29:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:55,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-12-02 10:29:55,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:29:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 98 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:29:57,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:30:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 51 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:30:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376041366] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:30:02,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:30:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 26] total 78 [2024-12-02 10:30:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578852172] [2024-12-02 10:30:02,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:30:02,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-02 10:30:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:30:02,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-02 10:30:02,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=5711, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 10:30:02,509 INFO L87 Difference]: Start difference. First operand 43251 states and 57225 transitions. Second operand has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:30:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:30:21,084 INFO L93 Difference]: Finished difference Result 137922 states and 182149 transitions. [2024-12-02 10:30:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-12-02 10:30:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 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 206 [2024-12-02 10:30:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:30:21,153 INFO L225 Difference]: With dead ends: 137922 [2024-12-02 10:30:21,154 INFO L226 Difference]: Without dead ends: 97153 [2024-12-02 10:30:21,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32275 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=5538, Invalid=84762, Unknown=0, NotChecked=0, Total=90300 [2024-12-02 10:30:21,181 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 3601 mSDsluCounter, 16011 mSDsCounter, 0 mSdLazyCounter, 11496 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 16308 SdHoareTripleChecker+Invalid, 11543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 11496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:30:21,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 16308 Invalid, 11543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 11496 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 10:30:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97153 states. [2024-12-02 10:30:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97153 to 62068. [2024-12-02 10:30:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62068 states, 62067 states have (on average 1.3125976767042067) internal successors, (81469), 62067 states have internal predecessors, (81469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:30:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62068 states to 62068 states and 81469 transitions. [2024-12-02 10:30:22,150 INFO L78 Accepts]: Start accepts. Automaton has 62068 states and 81469 transitions. Word has length 206 [2024-12-02 10:30:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:30:22,150 INFO L471 AbstractCegarLoop]: Abstraction has 62068 states and 81469 transitions. [2024-12-02 10:30:22,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:30:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 62068 states and 81469 transitions. [2024-12-02 10:30:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 10:30:22,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:30:22,161 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-12-02 10:30:22,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 10:30:22,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 10:30:22,361 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:30:22,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1388882565, now seen corresponding path program 1 times [2024-12-02 10:30:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:30:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101304887] [2024-12-02 10:30:22,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:22,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:30:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 207 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 10:30:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:30:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101304887] [2024-12-02 10:30:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101304887] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:30:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669924542] [2024-12-02 10:30:23,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:23,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:23,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:23,861 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:23,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 10:30:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:26,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-12-02 10:30:26,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:30:28,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:30:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 68 proven. 173 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:30:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669924542] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:30:32,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:30:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 29, 24] total 56 [2024-12-02 10:30:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310183610] [2024-12-02 10:30:32,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:30:32,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 10:30:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:30:32,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 10:30:32,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2776, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 10:30:32,251 INFO L87 Difference]: Start difference. First operand 62068 states and 81469 transitions. Second operand has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:30:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:30:37,864 INFO L93 Difference]: Finished difference Result 138697 states and 181478 transitions. [2024-12-02 10:30:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 10:30:37,865 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 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 206 [2024-12-02 10:30:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:30:37,924 INFO L225 Difference]: With dead ends: 138697 [2024-12-02 10:30:37,924 INFO L226 Difference]: Without dead ends: 78010 [2024-12-02 10:30:37,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4581 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2078, Invalid=16012, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 10:30:37,957 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 2690 mSDsluCounter, 6189 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:30:37,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 6419 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:30:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78010 states. [2024-12-02 10:30:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78010 to 62443. [2024-12-02 10:30:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62443 states, 62442 states have (on average 1.3103359918003907) internal successors, (81820), 62442 states have internal predecessors, (81820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:30:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62443 states to 62443 states and 81820 transitions. [2024-12-02 10:30:38,933 INFO L78 Accepts]: Start accepts. Automaton has 62443 states and 81820 transitions. Word has length 206 [2024-12-02 10:30:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:30:38,933 INFO L471 AbstractCegarLoop]: Abstraction has 62443 states and 81820 transitions. [2024-12-02 10:30:38,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:30:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 62443 states and 81820 transitions. [2024-12-02 10:30:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 10:30:38,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:30:38,944 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-12-02 10:30:38,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 10:30:39,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 10:30:39,144 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:30:39,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1760157407, now seen corresponding path program 1 times [2024-12-02 10:30:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:30:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475094283] [2024-12-02 10:30:39,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:39,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:30:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 115 proven. 78 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:30:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:30:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475094283] [2024-12-02 10:30:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475094283] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:30:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955162774] [2024-12-02 10:30:45,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:45,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:45,998 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:45,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 10:30:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:47,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 329 conjuncts are in the unsatisfiable core [2024-12-02 10:30:47,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:30:54,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:31:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955162774] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:31:03,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:31:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 54, 39] total 110 [2024-12-02 10:31:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144813258] [2024-12-02 10:31:03,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:31:03,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-12-02 10:31:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:31:03,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-12-02 10:31:03,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=11210, Unknown=0, NotChecked=0, Total=11990 [2024-12-02 10:31:03,525 INFO L87 Difference]: Start difference. First operand 62443 states and 81820 transitions. Second operand has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:14,351 INFO L93 Difference]: Finished difference Result 202680 states and 263406 transitions. [2024-12-02 10:32:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 567 states. [2024-12-02 10:32:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 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 206 [2024-12-02 10:32:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:32:14,456 INFO L225 Difference]: With dead ends: 202680 [2024-12-02 10:32:14,456 INFO L226 Difference]: Without dead ends: 142783 [2024-12-02 10:32:14,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 672 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195990 ImplicationChecksByTransitivity, 66.8s TimeCoverageRelationStatistics Valid=25980, Invalid=427622, Unknown=0, NotChecked=0, Total=453602 [2024-12-02 10:32:14,495 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 12205 mSDsluCounter, 16099 mSDsCounter, 0 mSdLazyCounter, 10451 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12205 SdHoareTripleChecker+Valid, 16377 SdHoareTripleChecker+Invalid, 10754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 10451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:32:14,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12205 Valid, 16377 Invalid, 10754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 10451 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-12-02 10:32:14,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142783 states. [2024-12-02 10:32:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142783 to 67881. [2024-12-02 10:32:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67881 states, 67880 states have (on average 1.3095904537418974) internal successors, (88895), 67880 states have internal predecessors, (88895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67881 states to 67881 states and 88895 transitions. [2024-12-02 10:32:15,635 INFO L78 Accepts]: Start accepts. Automaton has 67881 states and 88895 transitions. Word has length 206 [2024-12-02 10:32:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:15,635 INFO L471 AbstractCegarLoop]: Abstraction has 67881 states and 88895 transitions. [2024-12-02 10:32:15,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 67881 states and 88895 transitions. [2024-12-02 10:32:15,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:32:15,646 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:15,646 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-12-02 10:32:15,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-12-02 10:32:15,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 10:32:15,847 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:15,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1835943249, now seen corresponding path program 1 times [2024-12-02 10:32:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:15,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931762007] [2024-12-02 10:32:15,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:32:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:32:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931762007] [2024-12-02 10:32:23,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931762007] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:32:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294821637] [2024-12-02 10:32:23,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:23,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:23,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:32:23,036 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:32:23,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 10:32:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:24,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-12-02 10:32:24,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:32:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 63 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:32:27,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:32:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:32:32,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294821637] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:32:32,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:32:32,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31, 32] total 88 [2024-12-02 10:32:32,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897051559] [2024-12-02 10:32:32,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:32:32,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-12-02 10:32:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:32:32,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-12-02 10:32:32,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=7067, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 10:32:32,093 INFO L87 Difference]: Start difference. First operand 67881 states and 88895 transitions. Second operand has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:45,216 INFO L93 Difference]: Finished difference Result 128684 states and 169043 transitions. [2024-12-02 10:32:45,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-12-02 10:32:45,217 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 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 207 [2024-12-02 10:32:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:32:45,270 INFO L225 Difference]: With dead ends: 128684 [2024-12-02 10:32:45,271 INFO L226 Difference]: Without dead ends: 71115 [2024-12-02 10:32:45,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 357 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18622 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=4477, Invalid=51455, Unknown=0, NotChecked=0, Total=55932 [2024-12-02 10:32:45,301 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 2401 mSDsluCounter, 7048 mSDsCounter, 0 mSdLazyCounter, 9126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 7221 SdHoareTripleChecker+Invalid, 9176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 9126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:32:45,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 7221 Invalid, 9176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 9126 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 10:32:45,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71115 states. [2024-12-02 10:32:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71115 to 66842. [2024-12-02 10:32:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66842 states, 66841 states have (on average 1.3093610209302673) internal successors, (87519), 66841 states have internal predecessors, (87519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66842 states to 66842 states and 87519 transitions. [2024-12-02 10:32:46,122 INFO L78 Accepts]: Start accepts. Automaton has 66842 states and 87519 transitions. Word has length 207 [2024-12-02 10:32:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:46,123 INFO L471 AbstractCegarLoop]: Abstraction has 66842 states and 87519 transitions. [2024-12-02 10:32:46,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 66842 states and 87519 transitions. [2024-12-02 10:32:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:32:46,132 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:46,132 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:32:46,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 10:32:46,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 10:32:46,333 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:46,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:46,333 INFO L85 PathProgramCache]: Analyzing trace with hash 390427642, now seen corresponding path program 1 times [2024-12-02 10:32:46,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:46,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331724466] [2024-12-02 10:32:46,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:46,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:32:47,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:32:47,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331724466] [2024-12-02 10:32:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331724466] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:32:47,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510804568] [2024-12-02 10:32:47,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:47,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:47,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:32:47,449 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:32:47,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 10:32:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:48,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 10:32:48,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:32:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:32:48,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:32:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 10:32:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510804568] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:32:49,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:32:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 16 [2024-12-02 10:32:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612073881] [2024-12-02 10:32:49,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:32:49,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 10:32:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:32:49,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 10:32:49,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-12-02 10:32:49,566 INFO L87 Difference]: Start difference. First operand 66842 states and 87519 transitions. Second operand has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:50,294 INFO L93 Difference]: Finished difference Result 132018 states and 172845 transitions. [2024-12-02 10:32:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:32:50,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 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 207 [2024-12-02 10:32:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:32:50,347 INFO L225 Difference]: With dead ends: 132018 [2024-12-02 10:32:50,347 INFO L226 Difference]: Without dead ends: 65278 [2024-12-02 10:32:50,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:32:50,378 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 370 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:32:50,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 650 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:32:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65278 states. [2024-12-02 10:32:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65278 to 62922. [2024-12-02 10:32:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62922 states, 62921 states have (on average 1.3111361866467475) internal successors, (82498), 62921 states have internal predecessors, (82498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62922 states to 62922 states and 82498 transitions. [2024-12-02 10:32:51,255 INFO L78 Accepts]: Start accepts. Automaton has 62922 states and 82498 transitions. Word has length 207 [2024-12-02 10:32:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:51,256 INFO L471 AbstractCegarLoop]: Abstraction has 62922 states and 82498 transitions. [2024-12-02 10:32:51,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:32:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 62922 states and 82498 transitions. [2024-12-02 10:32:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:32:51,263 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:51,264 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-12-02 10:32:51,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 10:32:51,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 10:32:51,464 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:51,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1858472034, now seen corresponding path program 1 times [2024-12-02 10:32:51,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:51,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485705588] [2024-12-02 10:32:51,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:33:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 30 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:33:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:33:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485705588] [2024-12-02 10:33:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485705588] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:33:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068757752] [2024-12-02 10:33:00,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:33:00,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:33:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:33:00,636 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:33:00,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 10:33:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:33:02,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 203 conjuncts are in the unsatisfiable core [2024-12-02 10:33:02,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:33:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 49 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:33:06,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:33:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 42 proven. 161 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 10:33:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068757752] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:33:11,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:33:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 32, 26] total 93 [2024-12-02 10:33:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831672983] [2024-12-02 10:33:11,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:33:11,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-12-02 10:33:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:33:11,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-12-02 10:33:11,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=7982, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 10:33:11,487 INFO L87 Difference]: Start difference. First operand 62922 states and 82498 transitions. Second operand has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:33:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:33:54,721 INFO L93 Difference]: Finished difference Result 269032 states and 353883 transitions. [2024-12-02 10:33:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2024-12-02 10:33:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 states have internal predecessors, (563), 0 states have call successors, (0), 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 207 [2024-12-02 10:33:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:33:54,906 INFO L225 Difference]: With dead ends: 269032 [2024-12-02 10:33:54,906 INFO L226 Difference]: Without dead ends: 214461 [2024-12-02 10:33:54,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69905 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=11051, Invalid=173419, Unknown=0, NotChecked=0, Total=184470 [2024-12-02 10:33:54,957 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 6071 mSDsluCounter, 15762 mSDsCounter, 0 mSdLazyCounter, 13322 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6071 SdHoareTripleChecker+Valid, 16115 SdHoareTripleChecker+Invalid, 13454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 13322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:33:54,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6071 Valid, 16115 Invalid, 13454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 13322 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-12-02 10:33:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214461 states. [2024-12-02 10:33:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214461 to 139980. [2024-12-02 10:33:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139980 states, 139979 states have (on average 1.3129540859700384) internal successors, (183786), 139979 states have internal predecessors, (183786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:33:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139980 states to 139980 states and 183786 transitions. [2024-12-02 10:33:57,285 INFO L78 Accepts]: Start accepts. Automaton has 139980 states and 183786 transitions. Word has length 207 [2024-12-02 10:33:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:33:57,285 INFO L471 AbstractCegarLoop]: Abstraction has 139980 states and 183786 transitions. [2024-12-02 10:33:57,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:33:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 139980 states and 183786 transitions. [2024-12-02 10:33:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:33:57,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:33:57,299 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-12-02 10:33:57,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-02 10:33:57,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 10:33:57,500 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:33:57,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:33:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -134225123, now seen corresponding path program 1 times [2024-12-02 10:33:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:33:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581977905] [2024-12-02 10:33:57,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:33:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:33:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:34:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-12-02 10:34:00,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:34:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581977905] [2024-12-02 10:34:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581977905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:34:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:34:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:34:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406933671] [2024-12-02 10:34:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:34:00,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:34:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:34:00,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:34:00,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:34:00,229 INFO L87 Difference]: Start difference. First operand 139980 states and 183786 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:34:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:34:01,809 INFO L93 Difference]: Finished difference Result 318024 states and 418129 transitions. [2024-12-02 10:34:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:34:01,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 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 207 [2024-12-02 10:34:01,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:34:01,969 INFO L225 Difference]: With dead ends: 318024 [2024-12-02 10:34:01,969 INFO L226 Difference]: Without dead ends: 190776 [2024-12-02 10:34:02,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:34:02,040 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 368 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:34:02,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1761 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:34:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190776 states. [2024-12-02 10:34:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190776 to 137439. [2024-12-02 10:34:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137439 states, 137438 states have (on average 1.3140252331960594) internal successors, (180597), 137438 states have internal predecessors, (180597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:34:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137439 states to 137439 states and 180597 transitions. [2024-12-02 10:34:04,095 INFO L78 Accepts]: Start accepts. Automaton has 137439 states and 180597 transitions. Word has length 207 [2024-12-02 10:34:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:34:04,095 INFO L471 AbstractCegarLoop]: Abstraction has 137439 states and 180597 transitions. [2024-12-02 10:34:04,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:34:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 137439 states and 180597 transitions. [2024-12-02 10:34:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:34:04,116 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:34:04,116 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-12-02 10:34:04,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 10:34:04,116 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:34:04,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:34:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 130105270, now seen corresponding path program 1 times [2024-12-02 10:34:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:34:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201557339] [2024-12-02 10:34:04,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:34:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:34:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:34:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 10:34:06,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:34:06,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201557339] [2024-12-02 10:34:06,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201557339] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:34:06,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:34:06,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:34:06,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499255379] [2024-12-02 10:34:06,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:34:06,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:34:06,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:34:06,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:34:06,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:34:06,541 INFO L87 Difference]: Start difference. First operand 137439 states and 180597 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:34:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:34:07,809 INFO L93 Difference]: Finished difference Result 276183 states and 363149 transitions. [2024-12-02 10:34:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:34:07,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 207 [2024-12-02 10:34:07,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:34:07,984 INFO L225 Difference]: With dead ends: 276183 [2024-12-02 10:34:07,984 INFO L226 Difference]: Without dead ends: 143517 [2024-12-02 10:34:08,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:34:08,045 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 8 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:34:08,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1264 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:34:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143517 states. [2024-12-02 10:34:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143517 to 141856. [2024-12-02 10:34:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141856 states, 141855 states have (on average 1.3108314828522083) internal successors, (185948), 141855 states have internal predecessors, (185948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:34:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141856 states to 141856 states and 185948 transitions. [2024-12-02 10:34:10,774 INFO L78 Accepts]: Start accepts. Automaton has 141856 states and 185948 transitions. Word has length 207 [2024-12-02 10:34:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:34:10,774 INFO L471 AbstractCegarLoop]: Abstraction has 141856 states and 185948 transitions. [2024-12-02 10:34:10,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:34:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 141856 states and 185948 transitions. [2024-12-02 10:34:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:34:10,808 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:34:10,808 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-12-02 10:34:10,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 10:34:10,808 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:34:10,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:34:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1002100731, now seen corresponding path program 1 times [2024-12-02 10:34:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:34:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310160169] [2024-12-02 10:34:10,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:34:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:34:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:34:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 106 proven. 82 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 10:34:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:34:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310160169] [2024-12-02 10:34:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310160169] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:34:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429506185] [2024-12-02 10:34:17,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:34:17,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:34:17,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:34:17,040 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:34:17,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 10:34:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:34:19,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 319 conjuncts are in the unsatisfiable core [2024-12-02 10:34:19,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:34:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 24 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:34:24,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:34:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 207 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:34:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429506185] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:34:32,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:34:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 42, 38] total 95 [2024-12-02 10:34:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878282266] [2024-12-02 10:34:32,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:34:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-12-02 10:34:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:34:32,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-12-02 10:34:32,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=8025, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 10:34:32,587 INFO L87 Difference]: Start difference. First operand 141856 states and 185948 transitions. Second operand has 95 states, 95 states have (on average 5.631578947368421) internal successors, (535), 95 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:35:26,982 INFO L93 Difference]: Finished difference Result 507402 states and 664932 transitions. [2024-12-02 10:35:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 366 states. [2024-12-02 10:35:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 5.631578947368421) internal successors, (535), 95 states have internal predecessors, (535), 0 states have call successors, (0), 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 207 [2024-12-02 10:35:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:35:27,309 INFO L225 Difference]: With dead ends: 507402 [2024-12-02 10:35:27,309 INFO L226 Difference]: Without dead ends: 378638 [2024-12-02 10:35:27,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78869 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=18367, Invalid=190939, Unknown=0, NotChecked=0, Total=209306 [2024-12-02 10:35:27,363 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 9791 mSDsluCounter, 9123 mSDsCounter, 0 mSdLazyCounter, 7129 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9791 SdHoareTripleChecker+Valid, 9295 SdHoareTripleChecker+Invalid, 7420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 7129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:35:27,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9791 Valid, 9295 Invalid, 7420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 7129 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 10:35:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378638 states. [2024-12-02 10:35:30,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378638 to 171236. [2024-12-02 10:35:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171236 states, 171235 states have (on average 1.3189242853388619) internal successors, (225846), 171235 states have internal predecessors, (225846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171236 states to 171236 states and 225846 transitions. [2024-12-02 10:35:30,413 INFO L78 Accepts]: Start accepts. Automaton has 171236 states and 225846 transitions. Word has length 207 [2024-12-02 10:35:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:35:30,413 INFO L471 AbstractCegarLoop]: Abstraction has 171236 states and 225846 transitions. [2024-12-02 10:35:30,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 5.631578947368421) internal successors, (535), 95 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:35:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 171236 states and 225846 transitions. [2024-12-02 10:35:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 10:35:30,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:35:30,435 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-12-02 10:35:30,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-12-02 10:35:30,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:30,636 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:35:30,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:35:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1061834703, now seen corresponding path program 1 times [2024-12-02 10:35:30,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:35:30,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826091603] [2024-12-02 10:35:30,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:35:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:35:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826091603] [2024-12-02 10:35:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826091603] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:35:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858928067] [2024-12-02 10:35:41,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:35:41,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:35:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:35:41,247 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:35:41,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 10:35:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:35:44,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 1679 conjuncts, 387 conjuncts are in the unsatisfiable core [2024-12-02 10:35:44,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:35:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:35:50,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:36:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 24 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:36:03,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858928067] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:36:03,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:36:03,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 51, 54] total 133 [2024-12-02 10:36:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465035146] [2024-12-02 10:36:03,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:36:03,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-12-02 10:36:03,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:36:03,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-12-02 10:36:03,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1063, Invalid=16493, Unknown=0, NotChecked=0, Total=17556 [2024-12-02 10:36:03,730 INFO L87 Difference]: Start difference. First operand 171236 states and 225846 transitions. Second operand has 133 states, 133 states have (on average 4.473684210526316) internal successors, (595), 133 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:36:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:36:56,581 INFO L93 Difference]: Finished difference Result 592059 states and 778406 transitions. [2024-12-02 10:36:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 377 states. [2024-12-02 10:36:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 4.473684210526316) internal successors, (595), 133 states have internal predecessors, (595), 0 states have call successors, (0), 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 208 [2024-12-02 10:36:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:36:57,489 INFO L225 Difference]: With dead ends: 592059 [2024-12-02 10:36:57,489 INFO L226 Difference]: Without dead ends: 418747 [2024-12-02 10:36:57,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 314 SyntacticMatches, 2 SemanticMatches, 505 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100042 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=14458, Invalid=242084, Unknown=0, NotChecked=0, Total=256542 [2024-12-02 10:36:57,669 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 6989 mSDsluCounter, 9476 mSDsCounter, 0 mSdLazyCounter, 10426 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6989 SdHoareTripleChecker+Valid, 9619 SdHoareTripleChecker+Invalid, 10639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 10426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:36:57,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6989 Valid, 9619 Invalid, 10639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 10426 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-12-02 10:36:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418747 states. [2024-12-02 10:37:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418747 to 361400. [2024-12-02 10:37:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361400 states, 361399 states have (on average 1.319713114867501) internal successors, (476943), 361399 states have internal predecessors, (476943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:37:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361400 states to 361400 states and 476943 transitions. [2024-12-02 10:37:05,884 INFO L78 Accepts]: Start accepts. Automaton has 361400 states and 476943 transitions. Word has length 208 [2024-12-02 10:37:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:37:05,885 INFO L471 AbstractCegarLoop]: Abstraction has 361400 states and 476943 transitions. [2024-12-02 10:37:05,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 4.473684210526316) internal successors, (595), 133 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:37:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 361400 states and 476943 transitions. [2024-12-02 10:37:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 10:37:06,014 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:37:06,014 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-12-02 10:37:06,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 10:37:06,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:37:06,215 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:37:06,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:37:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1221395934, now seen corresponding path program 1 times [2024-12-02 10:37:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:37:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423534379] [2024-12-02 10:37:06,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:37:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:37:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:37:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:37:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:37:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423534379] [2024-12-02 10:37:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423534379] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:37:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263935070] [2024-12-02 10:37:19,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:37:19,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:37:19,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:37:19,476 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:37:19,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4704f2c9-3b8a-4047-b921-5aa368b62b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 10:37:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:37:21,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-12-02 10:37:21,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:37:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 97 proven. 112 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 10:37:26,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:37:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 30 proven. 166 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 10:37:31,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263935070] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:37:31,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:37:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 26] total 76 [2024-12-02 10:37:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158040860] [2024-12-02 10:37:31,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:37:31,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-02 10:37:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:37:31,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-02 10:37:31,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=5205, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 10:37:31,475 INFO L87 Difference]: Start difference. First operand 361400 states and 476943 transitions. Second operand has 76 states, 76 states have (on average 6.921052631578948) internal successors, (526), 76 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)